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1181 lines
619 KiB
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1181 lines
619 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<class-scheme publication-date="2023-02-01" scheme-type="cpc" publication-type="official">
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<classification-item breakdown-code="false" not-allocatable="true" level="5" additional-only="false" sort-key="C01B" definition-exists="true" date-revised="2020-01-01" status="published"><classification-symbol>C01B</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>NON-METALLIC ELEMENTS</text></title-part><title-part><text>COMPOUNDS THEREOF; </text><CPC-specific-text><text>METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS <class-ref scheme="cpc">C01C</class-ref></text></CPC-specific-text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>In this subclass, tradenames that are often found in scientific and patent literature have been used in order to define precisely the scope of the groups.</note-paragraph><note-paragraph>Attention is drawn to the definitions of groups of chemical elements following the title of section <class-ref scheme="cpc">C</class-ref>.</note-paragraph></note><note type="warning"><note-paragraph warning-type="ipc-not-used">The following IPC groups are not in the CPC scheme. The subject matter for these IPC groups is classified in the following CPC groups: <table><row><entry><class-ref scheme="ipc">C01B35/16</class-ref>, <class-ref scheme="ipc">C01B35/18</class-ref></entry><entry> covered by </entry><entry><class-ref scheme="cpc">C01B35/00</class-ref> </entry></row></table></note-paragraph><note-paragraph>In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.</note-paragraph></note></notes-and-warnings>
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<classification-item breakdown-code="false" not-allocatable="true" level="6" additional-only="false" sort-key="C01B3/00" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrogen</text></title-part><title-part><text>Hydrides</text></title-part><title-part><text>Water</text></title-part><title-part><text>Synthesis gas from hydrocarbons</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01B3/00" definition-exists="true" ipc-concordant="C01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B3/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrogen</text></title-part><title-part><text>Gaseous mixtures containing hydrogen</text></title-part><title-part><text>Separation of hydrogen from mixtures containing it </text><reference><text>separation of gases by physical means <class-ref scheme="cpc">B01D</class-ref></text></reference></title-part><title-part><text>Purification of hydrogen </text><reference><text>production of water gas or synthesis gas from solid carbonaceous material <class-ref scheme="cpc">C10J</class-ref>; purifying or modifying the chemical compositions of combustible technical gases containing carbon monoxide <class-ref scheme="cpc">C10K</class-ref></text></reference></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>In this group it is desirable to add the indexing codes of groups <class-ref scheme="cpc">B01J2208/00</class-ref> and <class-ref scheme="cpc">B01J2219/00</class-ref>, for details relating to the reactors used in the generation of hydrogen or synthesis gas. </note-paragraph><note-paragraph>In groups <class-ref scheme="cpc">C01B3/12</class-ref> - <class-ref scheme="cpc">C01B3/18</class-ref> and in groups <class-ref scheme="cpc">C01B3/22</class-ref> - <class-ref scheme="cpc">C01B3/586</class-ref> it is desirable to add the indexing codes of group <class-ref scheme="cpc">C01B2203/00</class-ref>, for aspects relating to hydrogen or synthesis gas generation processes. </note-paragraph></note></notes-and-warnings>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B3/0005" definition-exists="false" ipc-concordant="C01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/0005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Reversible uptake of hydrogen by an appropriate medium, i.e. based on physical or chemical sorption phenomena or on reversible chemical reactions, e.g. for hydrogen storage purposes </text><reference><text>purification of hydrogen <class-ref scheme="cpc">C01B3/508</class-ref></text></reference><text>; Reversible gettering of hydrogen; Reversible uptake of hydrogen by electrodes</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B3/001" definition-exists="true" ipc-concordant="C01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the uptaking medium; Treatment thereof</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/0015" definition-exists="true" ipc-concordant="C01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/0015</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Organic compounds; Solutions thereof</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/0021" definition-exists="false" ipc-concordant="C01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/0021</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Carbon, e.g. active carbon, carbon nanotubes, fullerenes; Treatment thereof</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/0026" definition-exists="false" ipc-concordant="C01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B3/0026</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of one single metal or a rare earth metal; Treatment thereof</text></CPC-specific-text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph> In all of the groups <class-ref scheme="cpc">C01B3/0026</class-ref> - <class-ref scheme="cpc">C01B3/0084</class-ref>, the metallic storage materials may contain minor quantities of non-metals such as B, C, O, S, Se, Si; e.g. <class-ref scheme="cpc">C01B3/0036</class-ref> "only containing iron and titanium" includes Fe-Ti compositions comprising non-metals </note-paragraph><note-paragraph> In the groups <class-ref scheme="cpc">C01B3/0026</class-ref> and <class-ref scheme="cpc">C01B3/0047</class-ref> - <class-ref scheme="cpc">C01B3/0068</class-ref> a "rare-earth metal" means one single metal or a combination of metals selected from the lanthanides, Sc or Y </note-paragraph></note></notes-and-warnings></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/0031" definition-exists="false" ipc-concordant="C01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/0031</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Intermetallic compounds; Metal alloys; Treatment thereof</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/0036" definition-exists="false" ipc-concordant="C01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/0036</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>only containing iron and titanium; Treatment thereof</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/0042" definition-exists="false" ipc-concordant="C01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/0042</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>only containing magnesium and nickel; Treatment thereof</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/0047" definition-exists="false" ipc-concordant="C01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/0047</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>containing a rare earth metal; Treatment thereof</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B3/0052" definition-exists="false" ipc-concordant="C01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/0052</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>also containing titanium</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B3/0057" definition-exists="false" ipc-concordant="C01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/0057</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>also containing nickel</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B3/0063" definition-exists="true" ipc-concordant="C01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/0063</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>only containing a rare earth metal and only one other metal</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B3/0068" definition-exists="false" ipc-concordant="C01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/0068</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the other metal being nickel</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/0073" definition-exists="false" ipc-concordant="C01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/0073</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Slurries, Suspensions</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/0078" definition-exists="false" ipc-concordant="C01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/0078</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Composite solid storage mediums, i.e. coherent or loose mixtures of different solid constituents, chemically or structurally heterogeneous solid masses, coated solids or solids having a chemically modified surface region</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/0084" definition-exists="true" ipc-concordant="C01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/0084</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Solid storage mediums characterised by their shape, e.g. pellets, sintered shaped bodies, sheets, porous compacts, spongy metals, hollow particles, solids with cavities, layered solids</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B3/0089" definition-exists="false" ipc-concordant="C01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/0089</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Ortho-para conversion</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B3/0094" definition-exists="false" ipc-concordant="C01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/0094</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Atomic hydrogen</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B3/02" definition-exists="false" ipc-concordant="C01B3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Production of hydrogen or of gaseous mixtures containing </text><CPC-specific-text><text>a substantial proportion of</text></CPC-specific-text><text> hydrogen</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B3/025" definition-exists="true" ipc-concordant="C01B3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation or purification of gas mixtures for ammonia synthesis</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B3/04" definition-exists="true" ipc-concordant="C01B3/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by decomposition of inorganic compounds, e.g. ammonia </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B3/0005</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/042" definition-exists="false" ipc-concordant="C01B3/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/042</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Decomposition of water</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/045" definition-exists="false" ipc-concordant="C01B3/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/045</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in gaseous phase</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/047" definition-exists="false" ipc-concordant="C01B3/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/047</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Decomposition of ammonia</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B3/06" definition-exists="true" ipc-concordant="C01B3/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents </text><reference><text>by electrolysis of water <class-ref scheme="cpc">C25B1/04</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/061" definition-exists="false" ipc-concordant="C01B3/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/061</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by reaction of metal oxides with water</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/063" definition-exists="false" ipc-concordant="C01B3/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/063</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Cyclic methods</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/065" definition-exists="false" ipc-concordant="C01B3/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/065</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from a hydride</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/066" definition-exists="false" ipc-concordant="C01B3/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/066</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by reaction of water with phosphorus</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/068" definition-exists="false" ipc-concordant="C01B3/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/068</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the hydrogen being generated from the water as a result of a cyclus of reactions, not covered by groups <class-ref scheme="cpc">C01B3/063</class-ref> or <class-ref scheme="cpc">C01B3/105</class-ref></text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/08" definition-exists="true" ipc-concordant="C01B3/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with metals</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/10" definition-exists="true" ipc-concordant="C01B3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by reaction of water vapour with metals</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/105" definition-exists="false" ipc-concordant="C01B3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/105</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Cyclic methods</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/12" definition-exists="false" ipc-concordant="C01B3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by reaction of water vapour with carbon monoxide</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/14" definition-exists="false" ipc-concordant="C01B3/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Handling of heat and steam</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/16" definition-exists="false" ipc-concordant="C01B3/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using catalysts</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/18" definition-exists="false" ipc-concordant="C01B3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using moving solid particles</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/20" definition-exists="false" ipc-concordant="C01B3/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by reaction of metal hydroxides with carbon monoxide</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B3/22" definition-exists="true" ipc-concordant="C01B3/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by decomposition of gaseous or liquid organic compounds </text><reference><CPC-specific-text><text><class-ref scheme="cpc">C01B3/0005</class-ref> takes precedence </text></CPC-specific-text><text> ; coking liquid carbonaceous materials <class-ref scheme="cpc">C10B55/00</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/24" definition-exists="false" ipc-concordant="C01B3/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of hydrocarbons</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/26" definition-exists="false" ipc-concordant="C01B3/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using catalysts</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/28" definition-exists="false" ipc-concordant="C01B3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using moving solid particles</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B3/30" definition-exists="false" ipc-concordant="C01B3/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using the fluidised bed technique</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B3/32" definition-exists="true" ipc-concordant="C01B3/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/323" definition-exists="false" ipc-concordant="C01B3/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/323</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Catalytic reaction of gaseous or liquid organic compounds other than hydrocarbons with gasifying agents</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/326" definition-exists="true" ipc-concordant="C01B3/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/326</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the catalyst</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/34" definition-exists="false" ipc-concordant="C01B3/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by reaction of hydrocarbons with gasifying agents</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/342" definition-exists="false" ipc-concordant="C01B3/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/342</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with the aid of electrical means, electromagnetic or mechanical vibrations, or particle radiations</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/344" definition-exists="false" ipc-concordant="C01B3/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/344</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using non-catalytic solid particles</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/346" definition-exists="false" ipc-concordant="C01B3/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/346</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using heat generated by superheated steam</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/348" definition-exists="false" ipc-concordant="C01B3/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/348</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by direct contact with heat accumulating liquids, e.g. molten metals, molten salts</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/36" definition-exists="false" ipc-concordant="C01B3/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using oxygen or mixtures containing oxygen as gasifying agents</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B3/363" definition-exists="false" ipc-concordant="C01B3/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/363</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the burner used</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B3/366" definition-exists="false" ipc-concordant="C01B3/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/366</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Partial combustion in internal-combustion engines</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/38" definition-exists="false" ipc-concordant="C01B3/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using catalysts</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B3/382" definition-exists="true" ipc-concordant="C01B3/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/382</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Multi-step processes</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B3/384" definition-exists="true" ipc-concordant="C01B3/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/384</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the catalyst being continuously externally heated</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B3/386" definition-exists="false" ipc-concordant="C01B3/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/386</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Catalytic partial combustion</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B3/388" definition-exists="false" ipc-concordant="C01B3/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/388</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the heat being generated by superheated steam</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B3/40" definition-exists="true" ipc-concordant="C01B3/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>characterised by the catalyst</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B3/42" definition-exists="false" ipc-concordant="C01B3/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using moving solid particles</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B3/44" definition-exists="false" ipc-concordant="C01B3/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using the fluidised bed technique</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/46" definition-exists="false" ipc-concordant="C01B3/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/46</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using discontinuously preheated non-moving solid materials, e.g. blast and run</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/48" definition-exists="false" ipc-concordant="C01B3/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/48</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>followed by reaction of water vapour with carbon monoxide</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B3/50" definition-exists="false" ipc-concordant="C01B3/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification </text><reference><text><class-ref scheme="cpc">C01B3/14</class-ref> takes precedence</text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B3/501" definition-exists="false" ipc-concordant="C01B3/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/501</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by diffusion</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/503" definition-exists="false" ipc-concordant="C01B3/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/503</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the membrane</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/505" definition-exists="false" ipc-concordant="C01B3/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/505</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Membranes containing palladium</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B3/506" definition-exists="false" ipc-concordant="C01B3/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/506</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>at low temperatures</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B3/508" definition-exists="true" ipc-concordant="C01B3/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/508</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by selective and reversible uptake by an appropriate medium, i.e. the uptake being based on physical or chemical sorption phenomena or on reversible chemical reactions </text><reference><text>the appropriate mediums <u>per se</u> <class-ref scheme="cpc">C01B3/0005</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B3/52" definition-exists="false" ipc-concordant="C01B3/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/52</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by contacting with liquids</text></title-part><title-part><text>Regeneration of used liquids </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B3/508</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/54" definition-exists="false" ipc-concordant="C01B3/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/54</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>including a catalytic reaction</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B3/56" definition-exists="true" ipc-concordant="C01B3/56" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/56</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by contacting with solids</text></title-part><title-part><text>Regeneration of used solids </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B3/508</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B3/58" definition-exists="false" ipc-concordant="C01B3/58" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/58</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>including a catalytic reaction</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/583" definition-exists="false" ipc-concordant="C01B3/58" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/583</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the reaction being the selective oxidation of carbon monoxide</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B3/586" definition-exists="false" ipc-concordant="C01B3/58" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B3/586</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the reaction being a methanation reaction</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01B4/00" definition-exists="true" ipc-concordant="C01B4/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2023-01-01" status="published"><classification-symbol>C01B4/00</classification-symbol><class-title date-revised="2023-01-01"><title-part><text>Hydrogen isotopes</text></title-part><title-part><text>Inorganic compounds thereof prepared by isotope exchange, e.g. NH<sub>3</sub> + D<sub>2</sub> → NH<sub>2</sub>D + HD</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01B5/00" definition-exists="true" ipc-concordant="C01B5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B5/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Water</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B5/02" definition-exists="false" ipc-concordant="C01B5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B5/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Heavy water</text></title-part><title-part><text>Preparation by chemical reaction of hydrogen isotopes or their compounds, e.g. 4ND<sub>3</sub> + 7O<sub>2</sub> ---> 4NO<sub>2</sub> + 6D<sub>2</sub>O, 2D<sub>2</sub> + O<sub>2</sub> ---> 2D<sub>2</sub>O</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01B6/00" definition-exists="true" ipc-concordant="C01B6/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B6/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrides of metals </text><CPC-specific-text><text>including fully or partially hydrided metals, alloys or intermetallic compounds </text><reference><text>use of some thereof for reversible sorption of hydrogen <class-ref scheme="cpc">C01B3/0005</class-ref>, <class-ref scheme="cpc">C01B3/508</class-ref></text></reference><text>; Compounds containing at least one metal-hydrogen bond, e.g. (GeH<sub>3</sub>)<sub>2</sub>S, SiH GeH</text></CPC-specific-text></title-part><title-part><text>Monoborane or diborane</text></title-part><title-part><text>Addition complexes thereof </text><reference><text>higher hydrides of boron, substituted hydrides of boron <class-ref scheme="cpc">C01B35/00</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B6/003" definition-exists="false" ipc-concordant="C01B6/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B6/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Hydrides containing only one metal and one or several non-metals</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B6/006" definition-exists="false" ipc-concordant="C01B6/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B6/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>only one metal and one or several halogens</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B6/02" definition-exists="false" ipc-concordant="C01B6/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B6/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrides of transition elements</text></title-part><title-part><text>Addition complexes thereof</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B6/04" definition-exists="false" ipc-concordant="C01B6/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B6/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrides of alkali metals, alkaline earth metals, beryllium or magnesium</text></title-part><title-part><text>Addition complexes thereof</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B6/06" definition-exists="false" ipc-concordant="C01B6/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B6/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrides of aluminium, gallium, indium, thallium, germanium, tin, lead, arsenic, antimony, bismuth or polonium</text></title-part><title-part><text>Monoborane</text></title-part><title-part><text>Diborane</text></title-part><title-part><text>Addition complexes thereof</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B6/065" definition-exists="false" ipc-concordant="C01B6/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B6/065</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Hydrides of arsenic or antimony</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B6/10" definition-exists="false" ipc-concordant="C01B6/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B6/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Monoborane</text></title-part><title-part><text>Diborane</text></title-part><title-part><text>Addition complexes thereof</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B6/11" definition-exists="false" ipc-concordant="C01B6/11" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B6/11</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation from boron or inorganic compounds containing boron and oxygen</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B6/13" definition-exists="false" ipc-concordant="C01B6/13" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B6/13</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Addition complexes of monoborane or diborane, e.g. with phosphine, arsine or hydrazine</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B6/15" definition-exists="false" ipc-concordant="C01B6/15" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B6/15</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Metal borohydrides</text></title-part><title-part><text>Addition complexes thereof</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B6/17" definition-exists="false" ipc-concordant="C01B6/17" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B6/17</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation from boron or inorganic compounds containing boron and oxygen</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B6/19" definition-exists="false" ipc-concordant="C01B6/19" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B6/19</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation from other compounds of boron</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B6/21" definition-exists="false" ipc-concordant="C01B6/21" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B6/21</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of borohydrides of alkali metals, alkaline earth metals, magnesium or beryllium</text></title-part><title-part><text>Addition complexes thereof, e.g. LiBH<sub>4.2</sub>N<sub>2</sub>H<sub>4</sub>, NaB<sub>2</sub>H<sub>7</sub></text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B6/23" definition-exists="false" ipc-concordant="C01B6/23" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B6/23</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of borohydrides of other metals, e.g. aluminium borohydride</text></title-part><title-part><text>Addition complexes thereof, e.g. Li[Al(BH<sub>4</sub>)<sub>3</sub>H]</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B6/24" definition-exists="false" ipc-concordant="C01B6/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B6/24</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Hydrides containing at least two metals</text></title-part><title-part><text>Addition complexes thereof </text><reference><text><class-ref scheme="cpc">C01B6/13</class-ref> - <class-ref scheme="cpc">C01B6/23</class-ref> take precedence</text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B6/243" definition-exists="false" ipc-concordant="C01B6/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B6/243</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>containing only hydrogen, aluminium and alkali metals, e.g. Li(AlH<sub>4</sub>)</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B6/246" definition-exists="false" ipc-concordant="C01B6/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B6/246</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>also containing non-metals other than hydrogen</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B6/26" definition-exists="false" ipc-concordant="C01B6/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B6/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation from the metal with the highest valency or from its oxides or salts of its oxyacids</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B6/34" definition-exists="false" ipc-concordant="C01B6/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B6/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification</text></title-part><title-part><text>Stabilisation</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="true" level="6" additional-only="false" sort-key="C01B7/00" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Halogens, compounds thereof</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01B7/00" definition-exists="true" ipc-concordant="C01B7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Halogens</text></title-part><title-part><text>Halogen acids </text><reference><text>oxyacids <class-ref scheme="cpc">C01B11/00</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B7/01" definition-exists="false" ipc-concordant="C01B7/01" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/01</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Chlorine</text></title-part><title-part><text>Hydrogen chloride</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B7/012" definition-exists="false" ipc-concordant="C01B7/01" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/012</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation of hydrogen chloride from the elements</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B7/015" definition-exists="false" ipc-concordant="C01B7/01" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/015</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Chlorine hydrates; Obtaining chlorine therefrom</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B7/017" definition-exists="false" ipc-concordant="C01B7/01" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/017</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation of hydrogen chloride by reacting together chlorine, water and carbon or carbon monoxide (the carbon not acting only as catalyst)</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B7/03" definition-exists="false" ipc-concordant="C01B7/03" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/03</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation from chlorides</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B7/035" definition-exists="false" ipc-concordant="C01B7/03" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/035</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation of hydrogen chloride from chlorides</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B7/04" definition-exists="false" ipc-concordant="C01B7/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of chlorine from hydrogen chloride</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B7/05" definition-exists="false" ipc-concordant="C01B7/05" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/05</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation from ammonium chloride</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B7/055" definition-exists="false" ipc-concordant="C01B7/05" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/055</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation of hydrogen chloride from ammonium chloride</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B7/07" definition-exists="false" ipc-concordant="C01B7/07" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B7/07</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Purification </text><CPC-specific-text><text>; Separation </text><reference><text><class-ref scheme="cpc">C01B7/015</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B7/0706" definition-exists="false" ipc-concordant="C01B7/07" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/0706</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of hydrogen chloride</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B7/0712" definition-exists="false" ipc-concordant="C01B7/07" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/0712</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by distillation</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B7/0718" definition-exists="false" ipc-concordant="C01B7/07" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/0718</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by adsorption</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B7/0725" definition-exists="false" ipc-concordant="C01B7/07" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/0725</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by active carbon</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B7/0731" definition-exists="false" ipc-concordant="C01B7/07" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/0731</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by extraction</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B7/0737" definition-exists="false" ipc-concordant="C01B7/07" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/0737</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>hydrogen chloride being extracted</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B7/0743" definition-exists="false" ipc-concordant="C01B7/07" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/0743</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of gaseous or dissolved chlorine</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B7/075" definition-exists="false" ipc-concordant="C01B7/075" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/075</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of liquid chlorine</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B7/09" definition-exists="false" ipc-concordant="C01B7/09" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/09</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Bromine</text></title-part><title-part><text>Hydrogen bromide</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B7/093" definition-exists="false" ipc-concordant="C01B7/09" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/093</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Hydrogen bromide</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B7/096" definition-exists="false" ipc-concordant="C01B7/09" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/096</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Bromine</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B7/13" definition-exists="false" ipc-concordant="C01B7/13" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/13</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Iodine</text></title-part><title-part><text>Hydrogen iodide</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B7/135" definition-exists="false" ipc-concordant="C01B7/13" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/135</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Hydrogen iodide</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B7/14" definition-exists="false" ipc-concordant="C01B7/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Iodine</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B7/16" definition-exists="false" ipc-concordant="C01B7/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation from seaweed</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B7/19" definition-exists="false" ipc-concordant="C01B7/19" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/19</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fluorine</text></title-part><title-part><text>Hydrogen fluoride</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B7/191" definition-exists="false" ipc-concordant="C01B7/19" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/191</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Hydrogen fluoride</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B7/192" definition-exists="false" ipc-concordant="C01B7/19" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/192</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation from fluorspar</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B7/193" definition-exists="false" ipc-concordant="C01B7/19" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/193</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation from silicon tetrafluoride, fluosilicic acid or fluosilicates</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B7/194" definition-exists="false" ipc-concordant="C01B7/19" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/194</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation from ammonium fluoride</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B7/195" definition-exists="false" ipc-concordant="C01B7/19" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/195</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Separation; Purification</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B7/196" definition-exists="false" ipc-concordant="C01B7/19" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/196</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by distillation</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B7/197" definition-exists="false" ipc-concordant="C01B7/19" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/197</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by adsorption</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B7/198" definition-exists="false" ipc-concordant="C01B7/19" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/198</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by solid ion-exchangers</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B7/20" definition-exists="false" ipc-concordant="C01B7/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fluorine</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B7/24" definition-exists="false" ipc-concordant="C01B7/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B7/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Inter-halogen compounds</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01B9/00" definition-exists="true" ipc-concordant="C01B9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B9/00</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>General methods of preparing halides </text><reference><text>particular individual halides, <u>see</u> the relevant groups in <class-ref scheme="cpc">C01B</class-ref> - <class-ref scheme="cpc">C01G</class-ref> according to the element combined with the halogen; electrolytic production of inorganic compounds <class-ref scheme="cpc">C25B</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B9/02" definition-exists="false" ipc-concordant="C01B9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B9/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Chlorides</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B9/04" definition-exists="false" ipc-concordant="C01B9/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B9/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Bromides</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B9/06" definition-exists="false" ipc-concordant="C01B9/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B9/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Iodides</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B9/08" definition-exists="false" ipc-concordant="C01B9/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B9/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fluorides</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01B11/00" definition-exists="true" ipc-concordant="C01B11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Oxides or oxyacids of halogens</text></title-part><title-part><text>Salts thereof</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B11/02" definition-exists="false" ipc-concordant="C01B11/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Oxides of chlorine</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B11/021" definition-exists="false" ipc-concordant="C01B11/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/021</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Chlorine hemioxide (Cl<sub>2</sub>O)</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B11/022" definition-exists="false" ipc-concordant="C01B11/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/022</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Chlorine dioxide (ClO<sub>2</sub>)</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B11/023" definition-exists="false" ipc-concordant="C01B11/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/023</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation from chlorites or chlorates</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B11/024" definition-exists="false" ipc-concordant="C01B11/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/024</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from chlorites</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B11/025" definition-exists="false" ipc-concordant="C01B11/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from chlorates without any other reaction reducing agent than chloride ions</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B11/026" definition-exists="false" ipc-concordant="C01B11/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/026</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from chlorate ions in the presence of a peroxidic compound, e.g. hydrogen peroxide, ozone, peroxysulfates</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B11/027" definition-exists="false" ipc-concordant="C01B11/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/027</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from chlorate ions in the presence of a nitrogen compound selected from nitrogen dioxide, nitrate or nitrite ions, nitrosylchloride, hydrazine or hydrazine compounds</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B11/028" definition-exists="false" ipc-concordant="C01B11/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/028</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Separation; Purification</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B11/029" definition-exists="false" ipc-concordant="C01B11/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/029</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Chlorine trioxide (ClO<sub>3</sub>); Chlorine hexoxide (Cl<sub>2</sub>O<sub>6</sub>); Chlorine heptoxide (Cl<sub>2</sub>O<sub>7</sub>)</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B11/04" definition-exists="false" ipc-concordant="C01B11/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hypochlorous acid</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B11/06" definition-exists="false" ipc-concordant="C01B11/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hypochlorites</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B11/062" definition-exists="false" ipc-concordant="C01B11/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/062</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Hypochlorites of alkali metals</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B11/064" definition-exists="false" ipc-concordant="C01B11/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/064</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Hypochlorites of alkaline-earth metals</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B11/066" definition-exists="false" ipc-concordant="C01B11/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/066</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Magnesium hypochlorite</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B11/068" definition-exists="false" ipc-concordant="C01B11/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/068</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Stabilisation by additives other than oxides, hydroxides, carbonates of alkali or alkaline-earth metals; Coating of particles; Shaping; Granulation</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B11/08" definition-exists="false" ipc-concordant="C01B11/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Chlorous acid</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B11/10" definition-exists="false" ipc-concordant="C01B11/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Chlorites</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B11/12" definition-exists="false" ipc-concordant="C01B11/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Chloric acid</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B11/14" definition-exists="false" ipc-concordant="C01B11/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Chlorates</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B11/145" definition-exists="false" ipc-concordant="C01B11/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/145</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Separation; Crystallisation; Purification, After-treatment; Stabilisation by additives</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B11/16" definition-exists="false" ipc-concordant="C01B11/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Perchloric acid</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B11/18" definition-exists="false" ipc-concordant="C01B11/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Perchlorates</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B11/185" definition-exists="false" ipc-concordant="C01B11/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/185</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Ammonium perchlorate</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B11/20" definition-exists="false" ipc-concordant="C01B11/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Oxygen compounds of bromine</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B11/22" definition-exists="false" ipc-concordant="C01B11/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Oxygen compounds of iodine</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B11/24" definition-exists="false" ipc-concordant="C01B11/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B11/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Oxygen compounds of fluorine</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="true" level="6" additional-only="false" sort-key="C01B13/00" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Oxygen</text></title-part><title-part><text>Oxides or hydroxides in general</text></title-part><title-part><text>Per-compounds</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01B13/00" definition-exists="true" ipc-concordant="C01B13/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Oxygen</text></title-part><title-part><text>Ozone</text></title-part><title-part><text>Oxides or hydroxides in general</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B13/02" definition-exists="true" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of oxygen </text><reference><text>by liquefying <class-ref scheme="cpc">F25J</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B13/0203" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0203</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from inorganic compounds</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B13/0207" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0207</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Water</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B13/0211" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0211</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Peroxy compounds</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B13/0214" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0214</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Hydrogen peroxide</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B13/0218" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0218</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Chlorate</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B13/0222" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0222</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from organic compounds</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B13/0225" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0225</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Peroxy compounds</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B13/0229" definition-exists="true" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B13/0229</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Purification or separation processes</text></CPC-specific-text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph> In groups <class-ref scheme="cpc">C01B13/0229</class-ref> - <class-ref scheme="cpc">C01B13/0288</class-ref>, additional features relating to the purification or separation processes are indexed with codes chosen from <class-ref scheme="cpc">C01B2210/0026</class-ref> - <class-ref scheme="cpc">C01B2210/0098</class-ref>. </note-paragraph></note></notes-and-warnings>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B13/0233" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0233</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Chemical processing only</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B13/0237" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0237</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by oxidation</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B13/024" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/024</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by reduction</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B13/0244" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0244</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by complexation</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B13/0248" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0248</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Physical processing only</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B13/0251" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0251</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by making use of membranes</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B13/0255" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0255</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the type of membrane</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B13/0259" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0259</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by adsorption on solids</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B13/0262" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0262</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the adsorbent</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B13/0266" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0266</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Carbon based materials</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B13/027" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/027</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Zeolites</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B13/0274" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0274</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Other molecular sieve materials</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B13/0277" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0277</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Temperature swing adsorption</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B13/0281" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0281</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in getters</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B13/0285" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0285</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by absorption in liquids</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B13/0288" definition-exists="true" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B13/0288</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Combined chemical and physical processing</text></CPC-specific-text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph> In this group, processing steps are indexed with codes chosen from <class-ref scheme="cpc">C01B2210/0001</class-ref> - <class-ref scheme="cpc">C01B2210/0025</class-ref></note-paragraph></note></notes-and-warnings></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B13/0292" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0292</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation from air using a molten phase containing alkali metal nitrite, optionally together with other oxygen acceptors</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B13/0296" definition-exists="false" ipc-concordant="C01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/0296</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Generators releasing in a self-sustaining way pure oxygen from a solid charge, without interaction of it with a fluid nor external heating, e.g. chlorate candles or canisters containing them </text><reference><text>charges <u>per se</u> <class-ref scheme="cpc">C01B13/02</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B13/08" definition-exists="false" ipc-concordant="C01B13/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from air with the aid of metal oxides, e.g. barium oxide, manganese oxide </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B13/0292</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B13/083" definition-exists="false" ipc-concordant="C01B13/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/083</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with barium oxide</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B13/086" definition-exists="false" ipc-concordant="C01B13/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/086</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with manganese oxide</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B13/10" definition-exists="true" ipc-concordant="C01B13/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of ozone</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B13/11" definition-exists="true" ipc-concordant="C01B13/11" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B13/11</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by electric discharge</text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph> In groups <class-ref scheme="cpc">C01B13/11</class-ref> and <class-ref scheme="cpc">C01B13/115</class-ref>, additional features relating to the preparation of ozone by electrical discharge are indexed with codes chosen from <class-ref scheme="cpc">C01B2201/00</class-ref> - <class-ref scheme="cpc">C01B2201/90</class-ref>. </note-paragraph></note></notes-and-warnings>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B13/115" definition-exists="false" ipc-concordant="C01B13/11" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/115</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the electrical circuits producing the electrical discharge</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B13/14" definition-exists="true" ipc-concordant="C01B13/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B13/14</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Methods for preparing oxides or hydroxides in general </text><reference><text>particular individual oxides or hydroxides, <u>see</u> the relevant groups of subclasses <class-ref scheme="cpc">C01B</class-ref> - <class-ref scheme="cpc">C01G</class-ref> or <class-ref scheme="cpc">C25B</class-ref>, according to the element combined with the oxygen or hydroxy group</text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B13/145" definition-exists="true" ipc-concordant="C01B13/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/145</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>After-treatment of oxides or hydroxides, e.g. pulverising, drying, decreasing the acidity</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B13/16" definition-exists="true" ipc-concordant="C01B13/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B13/18" definition-exists="true" ipc-concordant="C01B13/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by thermal decomposition of compounds, e.g. of salts or hydroxides</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B13/185" definition-exists="false" ipc-concordant="C01B13/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/185</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparing mixtures of oxides</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B13/20" definition-exists="true" ipc-concordant="C01B13/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by oxidation of elements in the gaseous state</text></title-part><title-part><text>by oxidation or hydrolysis of compounds in the gaseous state</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B13/22" definition-exists="false" ipc-concordant="C01B13/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of halides or oxyhalides</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B13/24" definition-exists="false" ipc-concordant="C01B13/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>in the presence of hot combustion gases</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B13/26" definition-exists="false" ipc-concordant="C01B13/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>in the presence of a fluidised bed</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B13/28" definition-exists="false" ipc-concordant="C01B13/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using a plasma or an electric discharge</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B13/30" definition-exists="false" ipc-concordant="C01B13/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Removal and cooling of the oxide-containing suspension</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B13/32" definition-exists="true" ipc-concordant="C01B13/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by oxidation or hydrolysis of elements or compounds in the liquid or solid state </text><CPC-specific-text><text>or in non-aqueous solution, e.g. sol-gel process</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B13/322" definition-exists="false" ipc-concordant="C01B13/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/322</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of elements or compounds in the solid state</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B13/324" definition-exists="false" ipc-concordant="C01B13/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/324</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by solid combustion synthesis</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B13/326" definition-exists="false" ipc-concordant="C01B13/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/326</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of elements or compounds in the liquid state</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B13/328" definition-exists="false" ipc-concordant="C01B13/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/328</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by processes making use of emulsions, e.g. the kerosine process</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B13/34" definition-exists="true" ipc-concordant="C01B13/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by oxidation or hydrolysis of sprayed or atomised solutions</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B13/36" definition-exists="true" ipc-concordant="C01B13/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by precipitation reactions in </text><CPC-specific-text><text>aqueous</text></CPC-specific-text><text> solutions </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B13/328</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B13/363" definition-exists="true" ipc-concordant="C01B13/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/363</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Mixtures of oxides or hydroxides by precipitation</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B13/366" definition-exists="true" ipc-concordant="C01B13/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B13/366</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by hydrothermal processing</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01B15/00" definition-exists="true" ipc-concordant="C01B15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Peroxides</text></title-part><title-part><text>Peroxyhydrates</text></title-part><title-part><text>Peroxyacids or salts thereof</text></title-part><title-part><text>Superoxides</text></title-part><title-part><text>Ozonides</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B15/005" definition-exists="false" ipc-concordant="C01B15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Stabilisation of the solid compounds subsequent to the preparation or to the crystallisation, by additives or by coating</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B15/01" definition-exists="false" ipc-concordant="C01B15/01" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/01</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrogen peroxide</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B15/013" definition-exists="false" ipc-concordant="C01B15/013" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/013</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Separation</text></title-part><title-part><text>Purification</text></title-part><title-part><text>Concentration</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B15/0135" definition-exists="false" ipc-concordant="C01B15/013" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/0135</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Purification by solid ion-exchangers or solid chelating agents</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B15/017" definition-exists="false" ipc-concordant="C01B15/017" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/017</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Anhydrous hydrogen peroxide</text></title-part><title-part><text>Anhydrous solutions or gaseous mixtures containing hydrogen peroxide</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B15/022" definition-exists="false" ipc-concordant="C01B15/022" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/022</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation from organic compounds</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B15/023" definition-exists="false" ipc-concordant="C01B15/023" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/023</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by the alkyl-anthraquinone process</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B15/024" definition-exists="false" ipc-concordant="C01B15/024" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/024</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from hydrocarbons</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B15/026" definition-exists="false" ipc-concordant="C01B15/026" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/026</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from alcohols</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B15/027" definition-exists="false" ipc-concordant="C01B15/027" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/027</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation from water</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B15/0275" definition-exists="false" ipc-concordant="C01B15/027" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/0275</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation by reaction of water, carbon monoxide and oxygen</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B15/029" definition-exists="false" ipc-concordant="C01B15/029" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/029</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation from hydrogen and oxygen</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B15/0295" definition-exists="false" ipc-concordant="C01B15/029" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/0295</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by electrical discharge</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B15/03" definition-exists="false" ipc-concordant="C01B15/03" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B15/03</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Preparation from inorganic peroxy compounds, e.g. from peroxysulfates</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B15/032" definition-exists="false" ipc-concordant="C01B15/032" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/032</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from metal peroxides</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B15/037" definition-exists="false" ipc-concordant="C01B15/037" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/037</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Stabilisation by additives</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B15/04" definition-exists="false" ipc-concordant="C01B15/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Metal peroxides or peroxyhydrates thereof; </text><CPC-specific-text><text>Metal</text></CPC-specific-text><text> superoxides; </text><CPC-specific-text><text>Metal</text></CPC-specific-text><text> ozonides; </text><CPC-specific-text><text>Peroxyhydrates thereof</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B15/043" definition-exists="false" ipc-concordant="C01B15/043" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/043</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of alkali metals, alkaline earth metals or magnesium </text><CPC-specific-text><text>or beryllium or aluminium</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B15/0435" definition-exists="false" ipc-concordant="C01B15/043" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/0435</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of alkali metals</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B15/047" definition-exists="false" ipc-concordant="C01B15/047" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/047</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of heavy metals</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B15/0475" definition-exists="false" ipc-concordant="C01B15/047" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/0475</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of actinides</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B15/055" definition-exists="false" ipc-concordant="C01B15/055" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/055</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Peroxyhydrates </text><reference><text><class-ref scheme="cpc">C01B15/04</class-ref> takes precedence</text></reference></title-part><title-part><text>Peroxyacids or salts thereof</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B15/06" definition-exists="false" ipc-concordant="C01B15/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing sulfur</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B15/08" definition-exists="false" ipc-concordant="C01B15/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Peroxysulfates</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B15/085" definition-exists="false" ipc-concordant="C01B15/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/085</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Stabilisation of the solid compounds, subsequent to the preparation or to the crystallisation, by additives or by coating</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B15/10" definition-exists="false" ipc-concordant="C01B15/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing carbon</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B15/103" definition-exists="false" ipc-concordant="C01B15/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/103</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>containing only alkali metals as metals</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B15/106" definition-exists="false" ipc-concordant="C01B15/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/106</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Stabilisation of the solid compounds, subsequent to the preparation or to the crystallisation, by additives or by coating</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B15/12" definition-exists="false" ipc-concordant="C01B15/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing boron</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B15/123" definition-exists="false" ipc-concordant="C01B15/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/123</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Stabilisation of the solid compounds, subsequent to the preparation or to the crystallisation, by additives or by coating</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B15/126" definition-exists="false" ipc-concordant="C01B15/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/126</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Dehydration of solid hydrated peroxyborates to less hydrated or anhydrous products</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B15/14" definition-exists="false" ipc-concordant="C01B15/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing silicon</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B15/16" definition-exists="false" ipc-concordant="C01B15/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B15/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing phosphorus</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01B17/00" definition-exists="true" ipc-concordant="C01B17/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sulfur</text></title-part><title-part><text>Compounds thereof</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B17/02" definition-exists="true" ipc-concordant="C01B17/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of sulfur</text></title-part><title-part><text>Purification</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/0205" definition-exists="false" ipc-concordant="C01B17/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0205</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Separation of sulfur from liquids, e.g. by coalescence</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/021" definition-exists="true" ipc-concordant="C01B17/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/021</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Separation of sulfur from gases</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/0216" definition-exists="false" ipc-concordant="C01B17/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0216</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Solidification or cooling of liquid sulfur</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/0221" definition-exists="true" ipc-concordant="C01B17/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0221</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Melting</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/0226" definition-exists="false" ipc-concordant="C01B17/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0226</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Vaporising or superheating</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/0232" definition-exists="true" ipc-concordant="C01B17/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0232</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Purification, e.g. degassing</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/0237" definition-exists="true" ipc-concordant="C01B17/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0237</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Converting into particles, e.g. by granulation, milling</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/0243" definition-exists="false" ipc-concordant="C01B17/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0243</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Other after-treatment of sulfur</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/0248" definition-exists="false" ipc-concordant="C01B17/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0248</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of particulate sulfur</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/0253" definition-exists="true" ipc-concordant="C01B17/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0253</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from non-gaseous sulfur compounds other than sulfides or materials containing such sulfides</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/0259" definition-exists="false" ipc-concordant="C01B17/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0259</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by reduction of sulfates</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/0264" definition-exists="false" ipc-concordant="C01B17/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0264</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of calcium sulfates</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/027" definition-exists="true" ipc-concordant="C01B17/027" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/027</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Recovery of sulfur from material containing elemental sulfur, e.g. luxmasses </text><CPC-specific-text><text>or sulfur containing ores</text></CPC-specific-text></title-part><title-part><text>Purification </text><CPC-specific-text><text>of the recovered sulfur</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/033" definition-exists="false" ipc-concordant="C01B17/033" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/033</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using a liquid extractant</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/04" definition-exists="true" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from gaseous sulfur compounds including gaseous sulfides</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/0404" definition-exists="true" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0404</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by processes comprising a dry catalytic conversion of hydrogen sulfide-containing gases, e.g. the Claus process</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/0408" definition-exists="true" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0408</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Pretreatment of the hydrogen sulfide containing gases</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/0413" definition-exists="true" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0413</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the combustion step</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B17/0417" definition-exists="true" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0417</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Combustion reactors</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B17/0421" definition-exists="true" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0421</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Multistage combustion</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/0426" definition-exists="false" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0426</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the catalytic conversion</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B17/043" definition-exists="true" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/043</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Catalytic converters</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B17/0434" definition-exists="true" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0434</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Catalyst compositions</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B17/0439" definition-exists="true" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0439</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>at least one catalyst bed operating below the dew-point of sulfur</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B17/0443" definition-exists="true" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0443</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in a moving bed</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/0447" definition-exists="true" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0447</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Separation of the obtained sulfur</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/0452" definition-exists="true" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0452</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Process control; Start-up or cooling-down procedures of the Claus process</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/0456" definition-exists="true" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0456</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the hydrogen sulfide-containing gas being a Claus process tail gas</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/046" definition-exists="true" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/046</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>without intermediate formation of sulfur dioxide</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B17/0465" definition-exists="true" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0465</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Catalyst compositions</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B17/0469" definition-exists="true" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0469</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>at least one catalyst bed operating below the dew-point of sulfur</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/0473" definition-exists="true" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0473</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by reaction of sulfur dioxide or sulfur trioxide containing gases with reducing agents other than hydrogen sulfide</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/0478" definition-exists="true" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0478</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with hydrocarbons or mixtures containing them</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/0482" definition-exists="false" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0482</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with carbon or solid carbonaceous materials</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/0486" definition-exists="false" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0486</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with carbon monoxide or carbon monoxide containing mixtures</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/0491" definition-exists="false" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0491</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with hydrogen or hydrogen-containing mixtures, e.g. synthesis gas</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/0495" definition-exists="true" ipc-concordant="C01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/0495</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by dissociation of hydrogen sulfide into the elements</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/05" definition-exists="true" ipc-concordant="C01B17/05" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/05</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by wet processes</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/06" definition-exists="true" ipc-concordant="C01B17/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from non-gaseous sulfides or materials containing such sulfides, e.g. ores</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/10" definition-exists="false" ipc-concordant="C01B17/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Finely divided sulfur, e.g. sublimed sulfur, flowers of sulfur</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/12" definition-exists="false" ipc-concordant="C01B17/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Insoluble sulfur (mu-sulfur)</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/125" definition-exists="false" ipc-concordant="C01B17/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/125</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sulfur isotopes other than 32S</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B17/16" definition-exists="true" ipc-concordant="C01B17/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrogen sulfides</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/161" definition-exists="false" ipc-concordant="C01B17/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/161</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation from elemental sulfur</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/162" definition-exists="false" ipc-concordant="C01B17/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/162</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from elemental sulfur and hydrogen</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/164" definition-exists="true" ipc-concordant="C01B17/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/164</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation by reduction of oxidic sulfur compounds</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/165" definition-exists="false" ipc-concordant="C01B17/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/165</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation from sulfides, oxysulfides or polysulfides</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/167" definition-exists="true" ipc-concordant="C01B17/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/167</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Separation</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/168" definition-exists="true" ipc-concordant="C01B17/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/168</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Purification</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/18" definition-exists="true" ipc-concordant="C01B17/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrogen polysulfides</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B17/20" definition-exists="true" ipc-concordant="C01B17/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Methods for preparing sulfides or polysulfides, in general </text><reference><text>ammonium sulfides or polysulfides <class-ref scheme="cpc">C01C</class-ref>; sulfides or polysulfides of metals, other than alkali metals, magnesium, calcium, strontium and barium, <u>see</u> the relevant groups of subclasses <class-ref scheme="cpc">C01F</class-ref> or <class-ref scheme="cpc">C01G</class-ref>, according to the metal</text></reference></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B17/22" definition-exists="true" ipc-concordant="C01B17/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Alkali metal sulfides or polysulfides</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/24" definition-exists="false" ipc-concordant="C01B17/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation by reduction</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/26" definition-exists="false" ipc-concordant="C01B17/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with carbon</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/28" definition-exists="false" ipc-concordant="C01B17/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with reducing gases</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/30" definition-exists="false" ipc-concordant="C01B17/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation from sodium or potassium amalgam with sulfur or sulfides</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/32" definition-exists="false" ipc-concordant="C01B17/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrosulfides of sodium or potassium</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/34" definition-exists="true" ipc-concordant="C01B17/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Polysulfides of sodium or potassium</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/36" definition-exists="false" ipc-concordant="C01B17/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/38" definition-exists="false" ipc-concordant="C01B17/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Dehydration</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/40" definition-exists="false" ipc-concordant="C01B17/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Making shaped products, e.g. granules</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B17/42" definition-exists="true" ipc-concordant="C01B17/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sulfides or polysulfides of magnesium, calcium, strontium, or barium</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/43" definition-exists="false" ipc-concordant="C01B17/43" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/43</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from oxides or hydroxides with sulfur or hydrogen sulfide</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/44" definition-exists="false" ipc-concordant="C01B17/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by reduction of sulfates</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B17/45" definition-exists="true" ipc-concordant="C01B17/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/45</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Compounds containing sulfur and halogen, with or without oxygen</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/4507" definition-exists="false" ipc-concordant="C01B17/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/4507</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>containing sulfur and halogen only</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/4515" definition-exists="false" ipc-concordant="C01B17/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/4515</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>containing sulfur and fluorine only</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/4523" definition-exists="false" ipc-concordant="C01B17/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/4523</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sulfur tetrafluoride</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/453" definition-exists="false" ipc-concordant="C01B17/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/453</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sulfur hexafluoride</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/4538" definition-exists="false" ipc-concordant="C01B17/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/4538</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>containing sulfur and chlorine only</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/4546" definition-exists="false" ipc-concordant="C01B17/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/4546</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sulfur dichloride</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/4553" definition-exists="false" ipc-concordant="C01B17/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/4553</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sulfur hexachloride</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/4561" definition-exists="false" ipc-concordant="C01B17/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/4561</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Compounds containing sulfur, halogen and oxygen only</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/4569" definition-exists="false" ipc-concordant="C01B17/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/4569</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Thionyl fluoride (SOF<sub>2</sub>)</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/4576" definition-exists="false" ipc-concordant="C01B17/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/4576</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sulfuryl fluoride (SO<sub>2</sub>F<sub>2</sub>)</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/4584" definition-exists="false" ipc-concordant="C01B17/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/4584</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Thionyl chloride (SOCl<sub>2</sub>)</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/4592" definition-exists="false" ipc-concordant="C01B17/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/4592</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sulfuryl chloride (SO<sub>2</sub>Cl<sub>2</sub>)</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B17/46" definition-exists="false" ipc-concordant="C01B17/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/46</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Compounds containing sulfur, halogen, hydrogen, and oxygen</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/463" definition-exists="false" ipc-concordant="C01B17/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/463</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Fluorosulfonic acid (FSO<sub>3</sub>H)</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/466" definition-exists="false" ipc-concordant="C01B17/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/466</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Chlorosulfonic acid (ClSO<sub>3</sub>H)</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B17/48" definition-exists="true" ipc-concordant="C01B17/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/48</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sulfur dioxide</text></title-part><title-part><text>Sulfurous acid</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/50" definition-exists="true" ipc-concordant="C01B17/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of sulfur dioxide</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/501" definition-exists="false" ipc-concordant="C01B17/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/501</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by reduction of sulfur compounds</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/502" definition-exists="false" ipc-concordant="C01B17/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/502</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of sulfur trioxide</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/503" definition-exists="false" ipc-concordant="C01B17/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/503</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of sulfuric acid</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/504" definition-exists="true" ipc-concordant="C01B17/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/504</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of ammonium sulfates </text><reference><text>of ammonium sulfates containing sulfuric acid solutions <class-ref scheme="cpc">C01B17/585</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/505" definition-exists="false" ipc-concordant="C01B17/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/505</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of alkali metal sulfates</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/506" definition-exists="false" ipc-concordant="C01B17/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/506</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of calcium sulfates</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/507" definition-exists="false" ipc-concordant="C01B17/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/507</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of iron sulfates</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/508" definition-exists="false" ipc-concordant="C01B17/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/508</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by oxidation of sulfur compounds</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/52" definition-exists="true" ipc-concordant="C01B17/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-01-01" status="published"><classification-symbol>C01B17/52</classification-symbol><class-title date-revised="2020-01-01"><title-part><text>by roasting sulfides </text><reference><text>preliminary treatment of ores or scrap <class-ref scheme="cpc">C22B1/00</class-ref></text></reference></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/54" definition-exists="true" ipc-concordant="C01B17/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/54</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by burning elemental sulfur</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/56" definition-exists="true" ipc-concordant="C01B17/56" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/56</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Separation</text></title-part><title-part><text>Purification</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/58" definition-exists="false" ipc-concordant="C01B17/58" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/58</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Recovery of sulfur dioxide from acid tar or the like </text><CPC-specific-text><text>or from any waste sulfuric acid</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/585" definition-exists="false" ipc-concordant="C01B17/58" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/585</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from ammonium sulfate containing sulfuric acid solutions</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/60" definition-exists="true" ipc-concordant="C01B17/60" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/60</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Isolation of sulfur dioxide from gases</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B17/62" definition-exists="true" ipc-concordant="C01B17/62" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B17/62</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Methods of preparing sulfites in general </text><reference><text>particular individual sulfites, <u>see</u> the relevant groups of subclasses <class-ref scheme="cpc">C01B</class-ref> - <class-ref scheme="cpc">C01G</class-ref>, according to the cation</text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/625" definition-exists="true" ipc-concordant="C01B17/62" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/625</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>metabisulfites or pyrosulfites</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B17/64" definition-exists="true" ipc-concordant="C01B17/64" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/64</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Thiosulfates</text></title-part><title-part><text>Dithionites</text></title-part><title-part><text>Polythionates</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/66" definition-exists="true" ipc-concordant="C01B17/66" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>C01B17/66</classification-symbol><class-title date-revised="2016-11-01"><title-part><text>Dithionites </text><CPC-specific-text><text>or hydrosulfites (S<sub>2</sub>O<sub>4</sub><sup>2-</sup>)</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/665" definition-exists="false" ipc-concordant="C01B17/66" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/665</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Stabilisation by additives subsequent to preparation; Dust prevention by additives</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B17/69" definition-exists="true" ipc-concordant="C01B17/69" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/69</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sulfur trioxide</text></title-part><title-part><text>Sulfuric acid</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/70" definition-exists="false" ipc-concordant="C01B17/70" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/70</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Stabilisation of gamma-form sulfur trioxide</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/74" definition-exists="true" ipc-concordant="C01B17/74" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/74</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/745" definition-exists="false" ipc-concordant="C01B17/74" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/745</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from sulfates</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/76" definition-exists="true" ipc-concordant="C01B17/76" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/76</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by contact processes</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/762" definition-exists="false" ipc-concordant="C01B17/76" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/762</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>High pressure processes</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/765" definition-exists="true" ipc-concordant="C01B17/765" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/765</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Multi-stage SO<sub>3</sub>-conversion</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B17/7655" definition-exists="true" ipc-concordant="C01B17/765" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/7655</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with intermediate absorption</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/77" definition-exists="false" ipc-concordant="C01B17/77" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/77</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fluidised-bed processes</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/775" definition-exists="false" ipc-concordant="C01B17/775" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/775</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Liquid phase contacting processes or wet catalysis processes</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/78" definition-exists="false" ipc-concordant="C01B17/78" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/78</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>characterised by the catalyst used</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B17/79" definition-exists="false" ipc-concordant="C01B17/79" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/79</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing vanadium</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/80" definition-exists="false" ipc-concordant="C01B17/80" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/80</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Apparatus</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B17/803" definition-exists="false" ipc-concordant="C01B17/80" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/803</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Converters</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B17/806" definition-exists="false" ipc-concordant="C01B17/80" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/806</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Absorbers; Heat exchangers</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/82" definition-exists="false" ipc-concordant="C01B17/82" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/82</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of sulfuric acid using a nitrogen oxide process</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/84" definition-exists="false" ipc-concordant="C01B17/84" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/84</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Chamber process</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/86" definition-exists="false" ipc-concordant="C01B17/86" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/86</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Tower process</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/88" definition-exists="false" ipc-concordant="C01B17/88" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/88</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Concentration of sulfuric acid</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/90" definition-exists="false" ipc-concordant="C01B17/90" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/90</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Separation</text></title-part><title-part><text>Purification</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/901" definition-exists="true" ipc-concordant="C01B17/90" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/901</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Recovery from spent acids containing metallic ions, e.g. hydrolysis acids, pickling acids </text><reference><text>obtaining sulfur dioxide as an intermediate in sulfur trioxide recovery from sulfates, e.g. iron sulfates <class-ref scheme="cpc">C01B17/501</class-ref>, from spent acids <class-ref scheme="cpc">C01B17/58</class-ref></text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/902" definition-exists="true" ipc-concordant="C01B17/90" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/902</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by dialysis</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/903" definition-exists="true" ipc-concordant="C01B17/90" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/903</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by liquid-liquid extraction</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/904" definition-exists="true" ipc-concordant="C01B17/90" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/904</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by ion-exchange</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/905" definition-exists="true" ipc-concordant="C01B17/90" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/905</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Removal of organic impurities</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/906" definition-exists="false" ipc-concordant="C01B17/90" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/906</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Removal of mercury</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/907" definition-exists="false" ipc-concordant="C01B17/90" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/907</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Removal of arsenic</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/908" definition-exists="false" ipc-concordant="C01B17/90" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/908</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Removal of antimony or bismuth</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/92" definition-exists="false" ipc-concordant="C01B17/92" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B17/92</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Recovery from acid tar or the like </text><CPC-specific-text><text>, e.g. alkylation acids </text><reference><text>obtaining sulfur dioxide as an intermediate in sulfur trioxode recovery therefrom <class-ref scheme="cpc">C01B17/58</class-ref></text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B17/925" definition-exists="false" ipc-concordant="C01B17/92" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/925</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by processes involving a liquid-liquid extraction</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B17/94" definition-exists="false" ipc-concordant="C01B17/94" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/94</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Recovery from nitration acids</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B17/96" definition-exists="true" ipc-concordant="C01B17/96" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B17/96</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Methods for the preparation of sulfates in general </text><reference><text>particular individual sulfates, <u>see</u> the relevant groups of subclasses <class-ref scheme="cpc">C01B</class-ref> - <class-ref scheme="cpc">C01G</class-ref>, according to the cation</text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B17/965" definition-exists="true" ipc-concordant="C01B17/96" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/965</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Pyrosulfates</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B17/98" definition-exists="true" ipc-concordant="C01B17/98" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B17/98</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Other compounds containing sulfur and oxygen </text><reference><text>persulfuric acids <class-ref scheme="cpc">C01B15/06</class-ref>; persulfates <class-ref scheme="cpc">C01B15/08</class-ref></text></reference></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01B19/00" definition-exists="true" ipc-concordant="C01B19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B19/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Selenium</text></title-part><title-part><text>Tellurium</text></title-part><title-part><text>Compounds thereof </text><reference><text>phosphorus compounds <class-ref scheme="cpc">C01B25/14</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B19/001" definition-exists="false" ipc-concordant="C01B19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B19/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B19/002" definition-exists="true" ipc-concordant="C01B19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B19/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Compounds containing, besides selenium or tellurium, more than one other element, with -O- and -OH not being considered as anions</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B19/004" definition-exists="false" ipc-concordant="C01B19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B19/004</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Oxides; Hydroxides</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B19/005" definition-exists="false" ipc-concordant="C01B19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B19/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Halides</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B19/007" definition-exists="true" ipc-concordant="C01B19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B19/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Tellurides or selenides of metals </text><reference><text><class-ref scheme="cpc">C01B19/002</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B19/008" definition-exists="false" ipc-concordant="C01B19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B19/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Salts of oxyacids of selenium or tellurium</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B19/02" definition-exists="true" ipc-concordant="C01B19/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B19/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Elemental selenium or tellurium</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B19/04" definition-exists="true" ipc-concordant="C01B19/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B19/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Binary compounds </text><CPC-specific-text><text>including binary selenium-tellurium compounds </text><reference><text><class-ref scheme="cpc">C01B19/004</class-ref>, <class-ref scheme="cpc">C01B19/005</class-ref>, <class-ref scheme="cpc">C01B19/007</class-ref> take precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01B21/00" definition-exists="true" ipc-concordant="C01B21/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nitrogen</text></title-part><title-part><text>Compounds thereof</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B21/02" definition-exists="true" ipc-concordant="C01B21/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of nitrogen </text><reference><text>by decomposition of ammonia </text><CPC-specific-text><text><class-ref scheme="cpc">C01B3/047</class-ref></text></CPC-specific-text></reference></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B21/04" definition-exists="true" ipc-concordant="C01B21/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification or separation of nitrogen </text><reference><text>by liquefying <class-ref scheme="cpc">F25J</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/0405" definition-exists="true" ipc-concordant="C01B21/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B21/0405</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Purification or separation processes</text></CPC-specific-text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph> In this group, additional features relating to the purification or separation processes are indexed with codes chosen from <class-ref scheme="cpc">C01B2210/0026</class-ref> - <class-ref scheme="cpc">C01B2210/0098</class-ref></note-paragraph></note></notes-and-warnings>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0411" definition-exists="true" ipc-concordant="C01B21/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0411</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Chemical processing only</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/0416" definition-exists="true" ipc-concordant="C01B21/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0416</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by oxidation</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/0422" definition-exists="true" ipc-concordant="C01B21/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0422</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by reduction</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/0427" definition-exists="false" ipc-concordant="C01B21/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0427</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by complexation</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0433" definition-exists="true" ipc-concordant="C01B21/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0433</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Physical processing only</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/0438" definition-exists="true" ipc-concordant="C01B21/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0438</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by making use of membranes</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B21/0444" definition-exists="false" ipc-concordant="C01B21/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0444</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the membrane</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/045" definition-exists="false" ipc-concordant="C01B21/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/045</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by adsorption in solids</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B21/0455" definition-exists="true" ipc-concordant="C01B21/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0455</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the adsorbent</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B21/0461" definition-exists="false" ipc-concordant="C01B21/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0461</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Carbon based materials</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B21/0466" definition-exists="false" ipc-concordant="C01B21/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0466</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Zeolites</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B21/0472" definition-exists="false" ipc-concordant="C01B21/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0472</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Other molecular sieve materials</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B21/0477" definition-exists="true" ipc-concordant="C01B21/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0477</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Temperature swing adsorption</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B21/0483" definition-exists="false" ipc-concordant="C01B21/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0483</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in getters</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/0488" definition-exists="false" ipc-concordant="C01B21/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0488</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by absorption in liquids</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0494" definition-exists="true" ipc-concordant="C01B21/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B21/0494</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Combined chemical and physical processing</text></CPC-specific-text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph> In this group, processing steps are indexed with codes chosen from <class-ref scheme="cpc">C01B2210/0001</class-ref> - <class-ref scheme="cpc">C01B2210/0025</class-ref></note-paragraph></note></notes-and-warnings></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B21/06" definition-exists="true" ipc-concordant="C01B21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B21/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Binary compounds of nitrogen with metals, with silicon, or with boron, </text><CPC-specific-text><text>or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron</text></CPC-specific-text><reference><text>azides <class-ref scheme="cpc">C01B21/08</class-ref></text></reference></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph> Binary compounds, i.e. compounds of nitrogen with only one other element chosen from metals, silicon, boron or carbon, are classified in groups <class-ref scheme="cpc">C01B21/06</class-ref> or <class-ref scheme="cpc">C01B21/0605</class-ref> - <class-ref scheme="cpc">C01B21/076</class-ref>. Compounds of nitrogen with more than one element chosen from metals, silicon or boron are classified in <class-ref scheme="cpc">C01B21/0602</class-ref></note-paragraph><note-paragraph> Documents relating to several specific binary compounds are classified in <class-ref scheme="cpc">C01B21/06</class-ref> only and receive the indexing codes chosen from <class-ref scheme="cpc">C01B21/0602</class-ref> - <class-ref scheme="cpc">C01B21/076</class-ref> to identify the specific compounds </note-paragraph></note></notes-and-warnings>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/0602" definition-exists="true" ipc-concordant="C01B21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0602</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with two or more other elements chosen from metals, silicon or boron</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/0605" definition-exists="true" ipc-concordant="C01B21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0605</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Binary compounds of nitrogen with carbon</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/0607" definition-exists="false" ipc-concordant="C01B21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0607</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with alkali metals</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/061" definition-exists="false" ipc-concordant="C01B21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/061</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with lithium</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/0612" definition-exists="false" ipc-concordant="C01B21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0612</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with alkaline-earth metals, beryllium or magnesium</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/0615" definition-exists="false" ipc-concordant="C01B21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0615</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with transition metals other than titanium, zirconium or hafnium</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0617" definition-exists="false" ipc-concordant="C01B21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0617</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with vanadium, niobium or tantalum</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/062" definition-exists="false" ipc-concordant="C01B21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/062</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with chromium, molybdenum or tungsten</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0622" definition-exists="false" ipc-concordant="C01B21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0622</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with iron, cobalt or nickel</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0625" definition-exists="false" ipc-concordant="C01B21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0625</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with copper</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0627" definition-exists="false" ipc-concordant="C01B21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0627</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with one or more rare earth metals</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/063" definition-exists="false" ipc-concordant="C01B21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/063</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with one or more actinides, e.g. UN, PuN</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/0632" definition-exists="true" ipc-concordant="C01B21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0632</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with gallium, indium or thallium</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/0635" definition-exists="false" ipc-concordant="C01B21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0635</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with germanium, tin or lead</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/0637" definition-exists="false" ipc-concordant="C01B21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B21/0637</classification-symbol><class-title date-revised="2016-05-01"><title-part><CPC-specific-text><text>with metals not specified in groups <class-ref scheme="cpc">C01B21/0607</class-ref> - <class-ref scheme="cpc">C01B21/0635</class-ref>, other than aluminium, titanium, zirconium or hafnium</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/064" definition-exists="false" ipc-concordant="C01B21/064" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/064</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with boron</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0641" definition-exists="true" ipc-concordant="C01B21/064" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0641</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation by direct nitridation of elemental boron</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0643" definition-exists="false" ipc-concordant="C01B21/064" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0643</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation from boron halides</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0645" definition-exists="true" ipc-concordant="C01B21/064" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0645</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation by carboreductive nitridation</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0646" definition-exists="true" ipc-concordant="C01B21/064" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0646</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation by pyrolysis of boron and nitrogen containing compounds</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0648" definition-exists="true" ipc-concordant="C01B21/064" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0648</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>After-treatment, e.g. grinding, purification </text><reference><text>transformation of hexagonal into cubic or wurtzitic boron nitride <class-ref scheme="cpc">C04B35/5831</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/068" definition-exists="false" ipc-concordant="C01B21/068" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/068</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with silicon</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0682" definition-exists="true" ipc-concordant="C01B21/068" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0682</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation by direct nitridation of silicon</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0685" definition-exists="true" ipc-concordant="C01B21/068" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0685</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation by carboreductive nitridation</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0687" definition-exists="false" ipc-concordant="C01B21/068" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0687</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>After-treatment, e.g. grinding, purification</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/072" definition-exists="false" ipc-concordant="C01B21/072" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/072</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with aluminium</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0722" definition-exists="true" ipc-concordant="C01B21/072" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0722</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation by direct nitridation of aluminium</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/0724" definition-exists="false" ipc-concordant="C01B21/072" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0724</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using a plasma</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0726" definition-exists="true" ipc-concordant="C01B21/072" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0726</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation by carboreductive nitridation</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0728" definition-exists="false" ipc-concordant="C01B21/072" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0728</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>After-treatment, e.g. grinding, purification</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/076" definition-exists="false" ipc-concordant="C01B21/076" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/076</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with titanium or zirconium </text><CPC-specific-text><text>or hafnium</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0761" definition-exists="true" ipc-concordant="C01B21/076" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0761</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation by direct nitridation of titanium, zirconium or hafnium</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0763" definition-exists="false" ipc-concordant="C01B21/076" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0763</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation from titanium, zirconium or hafnium halides</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0765" definition-exists="true" ipc-concordant="C01B21/076" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0765</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation by carboreductive nitridation</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0766" definition-exists="true" ipc-concordant="C01B21/076" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0766</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation by pyrolysis of nitrogen containing titanium, zirconium or hafnium compounds</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0768" definition-exists="false" ipc-concordant="C01B21/076" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0768</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>After-treatment, e.g. grinding, purification</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B21/08" definition-exists="false" ipc-concordant="C01B21/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrazoic acid</text></title-part><title-part><text>Azides</text></title-part><title-part><text>Halogen azides</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B21/082" definition-exists="true" ipc-concordant="C01B21/082" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/082</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Compounds containing nitrogen and non-metals </text><CPC-specific-text><text>and optionally metals</text></CPC-specific-text><reference><text><class-ref scheme="cpc">C01B21/06</class-ref>, <class-ref scheme="cpc">C01B21/08</class-ref> take precedence</text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/0821" definition-exists="false" ipc-concordant="C01B21/082" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0821</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Oxynitrides of metals, boron or silicon</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0823" definition-exists="false" ipc-concordant="C01B21/082" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0823</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Silicon oxynitrides</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0825" definition-exists="false" ipc-concordant="C01B21/082" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0825</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Aluminium oxynitrides</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0826" definition-exists="false" ipc-concordant="C01B21/082" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0826</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Silicon aluminium oxynitrides, i.e. sialons</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/0828" definition-exists="false" ipc-concordant="C01B21/082" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0828</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Carbonitrides or oxycarbonitrides of metals, boron or silicon</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/083" definition-exists="false" ipc-concordant="C01B21/083" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/083</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing one or more halogen atoms</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0832" definition-exists="false" ipc-concordant="C01B21/083" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0832</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Binary compounds of nitrogen with halogens</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/0835" definition-exists="false" ipc-concordant="C01B21/083" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0835</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Nitrogen trifluoride</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B21/0837" definition-exists="false" ipc-concordant="C01B21/083" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0837</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Purification</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/084" definition-exists="false" ipc-concordant="C01B21/084" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/084</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing also one or more oxygen atoms, e.g. nitrosyl halides</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/0842" definition-exists="false" ipc-concordant="C01B21/084" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0842</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Halides of nitrogen oxides</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B21/0844" definition-exists="true" ipc-concordant="C01B21/084" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0844</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Nitrosyl fluoride</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B21/0846" definition-exists="true" ipc-concordant="C01B21/084" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0846</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Nitrosyl chloride</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/0848" definition-exists="false" ipc-concordant="C01B21/084" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0848</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Nitrosyl perchlorate</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/086" definition-exists="false" ipc-concordant="C01B21/086" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/086</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing one or more sulfur atoms</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0865" definition-exists="false" ipc-concordant="C01B21/086" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0865</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Binary compounds of nitrogen with sulfur</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/087" definition-exists="false" ipc-concordant="C01B21/087" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/087</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing one or more hydrogen atoms</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/088" definition-exists="false" ipc-concordant="C01B21/088" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/088</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing also one or more halogen atoms</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/09" definition-exists="false" ipc-concordant="C01B21/09" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/09</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Halogeno-amines, e.g. chloramine</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B21/091" definition-exists="false" ipc-concordant="C01B21/09" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/091</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Chloramine, i.e. NH<sub>2</sub>Cl or dichloramine, i.e. NHCl<sub>2</sub></text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/092" definition-exists="false" ipc-concordant="C01B21/092" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/092</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing also one or more metal atoms</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/0923" definition-exists="true" ipc-concordant="C01B21/092" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0923</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Metal imides or amides </text><reference><text>silicon imides or amides <class-ref scheme="cpc">C01B21/087</class-ref></text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B21/0926" definition-exists="true" ipc-concordant="C01B21/092" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0926</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of alkali metals</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/093" definition-exists="false" ipc-concordant="C01B21/093" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/093</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing also one or more sulfur atoms</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/0935" definition-exists="true" ipc-concordant="C01B21/093" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0935</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Imidodisulfonic acid; Nitrilotrisulfonic acid; Salts thereof</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/094" definition-exists="false" ipc-concordant="C01B21/094" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/094</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nitrosyl containing acids</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/096" definition-exists="true" ipc-concordant="C01B21/096" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/096</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Amidosulfonic acid</text></title-part><title-part><text>Salts thereof</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/097" definition-exists="false" ipc-concordant="C01B21/097" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/097</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing phosphorus atoms</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/0975" definition-exists="false" ipc-concordant="C01B21/097" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0975</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>containing also one or more sulfur atoms</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/098" definition-exists="false" ipc-concordant="C01B21/098" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/098</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Phosphonitrilic dihalides</text></title-part><title-part><text>Polymers thereof</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/0983" definition-exists="false" ipc-concordant="C01B21/098" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0983</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Phosphonitrilic difluorides; Polymers thereof</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/0986" definition-exists="false" ipc-concordant="C01B21/098" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/0986</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Phosphonitrilic dichlorides; Polymers thereof</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/12" definition-exists="true" ipc-concordant="C01B21/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Carbamic acid </text><CPC-specific-text><text>or thiocarbamic acid</text></CPC-specific-text></title-part><title-part><text>Salts thereof</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/125" definition-exists="false" ipc-concordant="C01B21/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/125</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Metal carbamates</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/14" definition-exists="true" ipc-concordant="C01B21/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydroxylamine</text></title-part><title-part><text>Salts thereof</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/1409" definition-exists="false" ipc-concordant="C01B21/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/1409</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/1418" definition-exists="false" ipc-concordant="C01B21/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/1418</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by catalytic reduction of nitrogen oxides or nitrates with hydrogen</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/1427" definition-exists="false" ipc-concordant="C01B21/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/1427</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by reduction of nitrogen oxides or nitrites with bisulfite or sulfur dioxide, e.g. by the Raschig process</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/1436" definition-exists="false" ipc-concordant="C01B21/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/1436</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by reaction in the gas phase, e.g. of nitrogen, hydrogen and oxygen</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/1445" definition-exists="false" ipc-concordant="C01B21/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/1445</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of hydoxylamine from its salts</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/1454" definition-exists="false" ipc-concordant="C01B21/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B21/1454</classification-symbol><class-title date-revised="2016-05-01"><title-part><CPC-specific-text><text>of hydroxylamine salts by processes not covered by one or more of groups <class-ref scheme="cpc">C01B21/1418</class-ref> - <class-ref scheme="cpc">C01B21/1445</class-ref>, e.g. by conversion of one salt into another</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/1463" definition-exists="false" ipc-concordant="C01B21/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/1463</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Concentration</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/1472" definition-exists="false" ipc-concordant="C01B21/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/1472</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Separation</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/1481" definition-exists="false" ipc-concordant="C01B21/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/1481</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Purification</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/149" definition-exists="false" ipc-concordant="C01B21/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/149</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Stabilisation</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/16" definition-exists="false" ipc-concordant="C01B21/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrazine</text></title-part><title-part><text>Salts thereof</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B21/20" definition-exists="true" ipc-concordant="C01B21/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nitrogen oxides</text></title-part><title-part><text>Oxyacids of nitrogen</text></title-part><title-part><text>Salts thereof</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/203" definition-exists="false" ipc-concordant="C01B21/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/203</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation of nitrogen oxides using a plasma or an electric discharge</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/206" definition-exists="true" ipc-concordant="C01B21/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/206</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Nitric anhydride (N<sub>2</sub>O<sub>5</sub>) </text><reference><text><class-ref scheme="cpc">C01B21/203</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/22" definition-exists="true" ipc-concordant="C01B21/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nitrous oxide (N<sub>2</sub>O) </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B21/203</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/24" definition-exists="true" ipc-concordant="C01B21/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nitric oxide (NO) </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B21/203</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/26" definition-exists="false" ipc-concordant="C01B21/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation by catalytic </text><CPC-specific-text><text>or non-catalytic</text></CPC-specific-text><text> oxidation of ammonia</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/262" definition-exists="false" ipc-concordant="C01B21/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/262</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>obtaining nitrogen dioxide or tetroxide</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/265" definition-exists="true" ipc-concordant="C01B21/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/265</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the catalyst</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/267" definition-exists="false" ipc-concordant="C01B21/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/267</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Means for preventing deterioration or loss of catalyst or for recovering lost catalyst</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/28" definition-exists="false" ipc-concordant="C01B21/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Apparatus</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/30" definition-exists="false" ipc-concordant="C01B21/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation by oxidation of nitrogen </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B21/26</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B21/32" definition-exists="false" ipc-concordant="C01B21/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Apparatus</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/34" definition-exists="false" ipc-concordant="C01B21/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nitrogen trioxide (N<sub>2</sub>O<sub>3</sub>) </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B21/203</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/36" definition-exists="false" ipc-concordant="C01B21/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nitrogen dioxide (NO<sub>2</sub>, N<sub>2</sub>O<sub>4</sub>) </text><reference><CPC-specific-text><text><class-ref scheme="cpc">C01B21/203</class-ref></text></CPC-specific-text><text> , <class-ref scheme="cpc">C01B21/26</class-ref>, <class-ref scheme="cpc">C01B21/30</class-ref> take precedence</text></reference></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/38" definition-exists="false" ipc-concordant="C01B21/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nitric acid</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/40" definition-exists="false" ipc-concordant="C01B21/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation by absorption of oxides of nitrogen </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B21/26</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/42" definition-exists="false" ipc-concordant="C01B21/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation from nitrates</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/44" definition-exists="false" ipc-concordant="C01B21/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Concentration </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B21/40</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B21/46" definition-exists="false" ipc-concordant="C01B21/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B21/46</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Purification</text></title-part><title-part><text>Separation </text><CPC-specific-text><text>; Stabilisation </text><reference><text><class-ref scheme="cpc">C01B21/40</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/48" definition-exists="true" ipc-concordant="C01B21/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B21/48</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Methods for the preparation of nitrates in general </text><reference><text>particular individual nitrates, <u>see</u> the relevant groups of subclasses <class-ref scheme="cpc">C01B</class-ref> - <class-ref scheme="cpc">C01G</class-ref>, according to the cation</text></reference></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B21/50" definition-exists="true" ipc-concordant="C01B21/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B21/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nitrous acid</text></title-part><title-part><text>Salts thereof</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01B23/00" definition-exists="true" ipc-concordant="C01B23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B23/00</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Noble gases</text></title-part><title-part><text>Compounds thereof </text><reference><text>liquefying <class-ref scheme="cpc">F25J</class-ref> </text><CPC-specific-text><text>; noble gases obtained by rectification <class-ref scheme="cpc">F25J3/028</class-ref></text></CPC-specific-text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B23/0005" definition-exists="false" ipc-concordant="C01B23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B23/0005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Compounds of noble gases</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B23/001" definition-exists="true" ipc-concordant="C01B23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B23/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Purification or separation processes of noble gases</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B23/0015" definition-exists="true" ipc-concordant="C01B23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B23/0015</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Chemical processing only</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B23/0021" definition-exists="true" ipc-concordant="C01B23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B23/0021</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by oxidation</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B23/0026" definition-exists="true" ipc-concordant="C01B23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B23/0026</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by reduction</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B23/0031" definition-exists="false" ipc-concordant="C01B23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B23/0031</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by complexation</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B23/0036" definition-exists="true" ipc-concordant="C01B23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B23/0036</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Physical processing only</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B23/0042" definition-exists="true" ipc-concordant="C01B23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B23/0042</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by making use of membranes</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B23/0047" definition-exists="false" ipc-concordant="C01B23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B23/0047</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the membrane</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B23/0052" definition-exists="false" ipc-concordant="C01B23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B23/0052</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by adsorption in solids</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B23/0057" definition-exists="true" ipc-concordant="C01B23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B23/0057</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the adsorbent</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B23/0063" definition-exists="false" ipc-concordant="C01B23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B23/0063</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Carbon based materials</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B23/0068" definition-exists="false" ipc-concordant="C01B23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B23/0068</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Zeolites</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B23/0073" definition-exists="false" ipc-concordant="C01B23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B23/0073</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Other molecular sieve materials</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B23/0078" definition-exists="true" ipc-concordant="C01B23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B23/0078</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Temperature swing adsorption</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B23/0084" definition-exists="false" ipc-concordant="C01B23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B23/0084</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in getters</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B23/0089" definition-exists="false" ipc-concordant="C01B23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B23/0089</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by absorption in liquids</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B23/0094" definition-exists="true" ipc-concordant="C01B23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B23/0094</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Combined chemical and physical processing</text></CPC-specific-text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph> In this group, processing steps are indexed with codes chosen from <class-ref scheme="cpc">C01B2210/0001</class-ref> - <class-ref scheme="cpc">C01B2210/0025</class-ref></note-paragraph></note></notes-and-warnings></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01B25/00" definition-exists="true" ipc-concordant="C01B25/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Phosphorus</text></title-part><title-part><text>Compounds thereof </text><reference><CPC-specific-text><text><class-ref scheme="cpc">C01B6/00</class-ref></text></CPC-specific-text><text> , <class-ref scheme="cpc">C01B21/00</class-ref>, <class-ref scheme="cpc">C01B23/00</class-ref> take precedence; perphosphates <class-ref scheme="cpc">C01B15/16</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B25/003" definition-exists="false" ipc-concordant="C01B25/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Phosphorus</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B25/006" definition-exists="true" ipc-concordant="C01B25/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Stabilisation </text><reference><text><class-ref scheme="cpc">C01B25/04</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B25/01" definition-exists="false" ipc-concordant="C01B25/01" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/01</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Treating phosphate ores or other raw phosphate materials to obtain phosphorus or phosphorus compounds</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B25/02" definition-exists="false" ipc-concordant="C01B25/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of phosphorus</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B25/023" definition-exists="false" ipc-concordant="C01B25/023" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/023</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of red phosphorus</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B25/027" definition-exists="false" ipc-concordant="C01B25/027" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/027</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of yellow phosphorus</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B25/04" definition-exists="false" ipc-concordant="C01B25/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification of phosphorus</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B25/043" definition-exists="false" ipc-concordant="C01B25/043" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/043</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of red phosphorus</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B25/047" definition-exists="false" ipc-concordant="C01B25/047" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/047</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of yellow phosphorus</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B25/06" definition-exists="false" ipc-concordant="C01B25/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrogen phosphides</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B25/08" definition-exists="false" ipc-concordant="C01B25/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Other phosphides</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B25/081" definition-exists="false" ipc-concordant="C01B25/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/081</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of alkali metals, alkaline-earth metals or magnesium</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B25/082" definition-exists="false" ipc-concordant="C01B25/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/082</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of boron, aluminium, gallium or indium</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B25/084" definition-exists="false" ipc-concordant="C01B25/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/084</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of boron</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B25/085" definition-exists="false" ipc-concordant="C01B25/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/085</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of aluminium</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B25/087" definition-exists="false" ipc-concordant="C01B25/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/087</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of gallium or indium</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B25/088" definition-exists="false" ipc-concordant="C01B25/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/088</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>containing plural metal</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B25/10" definition-exists="false" ipc-concordant="C01B25/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Halides or oxyhalides of phosphorus</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B25/12" definition-exists="false" ipc-concordant="C01B25/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Oxides of phosphorus</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B25/14" definition-exists="false" ipc-concordant="C01B25/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sulfur, selenium, or tellurium compounds of phosphorus</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B25/16" definition-exists="true" ipc-concordant="C01B25/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Oxyacids of phosphorus</text></title-part><title-part><text>Salts thereof </text><reference><text>peroxyacids or salts thereof <class-ref scheme="cpc">C01B15/00</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B25/161" definition-exists="false" ipc-concordant="C01B25/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/161</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>containing at least one phosphorus atom with an oxidation number less than five, other than those mentioned below; Salts thereof</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B25/163" definition-exists="false" ipc-concordant="C01B25/163" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/163</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Phosphorous acid</text></title-part><title-part><text>Salts thereof</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B25/165" definition-exists="false" ipc-concordant="C01B25/165" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/165</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hypophosphorous acid</text></title-part><title-part><text>Salts thereof</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B25/168" definition-exists="false" ipc-concordant="C01B25/168" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/168</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pyrophosphorous acid</text></title-part><title-part><text>Salts thereof</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B25/18" definition-exists="false" ipc-concordant="C01B25/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Phosphoric acid</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B25/185" definition-exists="false" ipc-concordant="C01B25/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/185</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation neither from elemental phosphorus or phosphoric anhydride nor by reacting phosphate-containing material with an acid, e.g. by reacting phosphate-containing material with an ion-exchange resin or an acid salt used alone</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B25/20" definition-exists="false" ipc-concordant="C01B25/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation from elemental phosphorus or phosphoric anhydride</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B25/22" definition-exists="false" ipc-concordant="C01B25/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation by reacting phosphate-containing material with an acid, e.g. wet process</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/2204" definition-exists="false" ipc-concordant="C01B25/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/2204</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arrangements of vessels used in reacting phosphate-containing material in wet process</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/2208" definition-exists="false" ipc-concordant="C01B25/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/2208</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with an acid or a mixture of acids other than sulfuric acid</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B25/2212" definition-exists="false" ipc-concordant="C01B25/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/2212</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with hydrochloric acid or hydrogen chloride in aqueous medium</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B25/2216" definition-exists="false" ipc-concordant="C01B25/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/2216</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with nitric acid or nitrous vapours in aqueous medium</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/222" definition-exists="false" ipc-concordant="C01B25/222" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/222</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it <u>in situ</u>, e.g. a mixture of sulfur dioxide, water and oxygen</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B25/223" definition-exists="false" ipc-concordant="C01B25/223" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/223</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>only one form of calcium sulfate being formed</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B25/2235" definition-exists="false" ipc-concordant="C01B25/223" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/2235</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Anhydrite processes</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B25/225" definition-exists="false" ipc-concordant="C01B25/225" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/225</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Dihydrate process</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B25/226" definition-exists="false" ipc-concordant="C01B25/226" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/226</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hemihydrate process</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B25/228" definition-exists="false" ipc-concordant="C01B25/228" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/228</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>one form of calcium sulfate being formed and then converted to another form</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B25/2285" definition-exists="false" ipc-concordant="C01B25/228" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/2285</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Dihydrate-anhydrite or hemihydrate-anhydrite process</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B25/229" definition-exists="false" ipc-concordant="C01B25/229" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/229</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hemihydrate-dihydrate process</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="14" additional-only="false" sort-key="C01B25/2295" definition-exists="false" ipc-concordant="C01B25/229" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/2295</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the conversion being performed in one or more vessels different from those used for reaction after separation of phosphoric acid</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B25/231" definition-exists="false" ipc-concordant="C01B25/231" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/231</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Dihydrate-hemihydrate process</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B25/232" definition-exists="false" ipc-concordant="C01B25/232" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/232</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation by reacting phosphate containing material with concentrated sulfuric acid and subsequently lixiviating the obtained mass, e.g. clinker process</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B25/234" definition-exists="true" ipc-concordant="C01B25/234" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/234</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification</text></title-part><title-part><text>Stabilisation</text></title-part><title-part><text>Concentration </text><reference><text>purification concomitant with preparation <class-ref scheme="cpc">C01B25/22</class-ref>; preparation involving solvent-solvent extraction <class-ref scheme="cpc">C01B25/46</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/2343" definition-exists="false" ipc-concordant="C01B25/234" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/2343</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Concentration concomitant with purification, e.g. elimination of fluorine</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B25/2346" definition-exists="false" ipc-concordant="C01B25/234" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/2346</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Concentration</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/235" definition-exists="false" ipc-concordant="C01B25/235" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/235</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Clarification</text></title-part><title-part><text>Stabilisation to prevent post-precipitation of dissolved impurities</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/237" definition-exists="true" ipc-concordant="C01B25/237" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/237</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Selective elimination of impurities </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B25/2343</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B25/2372" definition-exists="false" ipc-concordant="C01B25/237" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/2372</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Anionic impurities, e.g. silica or boron compounds</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B25/2375" definition-exists="false" ipc-concordant="C01B25/237" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/2375</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Fluoride or fluosilicate anion</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B25/2377" definition-exists="false" ipc-concordant="C01B25/237" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/2377</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sulfate</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B25/238" definition-exists="false" ipc-concordant="C01B25/238" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B25/238</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Cationic impurities </text><CPC-specific-text><text>, e.g. arsenic compounds</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B25/24" definition-exists="false" ipc-concordant="C01B25/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Condensed phosphoric acids</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B25/26" definition-exists="true" ipc-concordant="C01B25/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Phosphates </text><reference><text>perphosphates <class-ref scheme="cpc">C01B15/16</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B25/265" definition-exists="false" ipc-concordant="C01B25/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/265</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>General methods for obtaining phosphates</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B25/28" definition-exists="false" ipc-concordant="C01B25/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ammonium phosphates</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B25/30" definition-exists="false" ipc-concordant="C01B25/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Alkali metal phosphates</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/301" definition-exists="true" ipc-concordant="C01B25/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/301</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation from liquid orthophosphoric acid or from an acid solution or suspension of orthophosphates </text><reference><text>using ion-exchangers <class-ref scheme="cpc">C01B25/30</class-ref></text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B25/303" definition-exists="false" ipc-concordant="C01B25/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/303</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with elimination of impurities</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/305" definition-exists="false" ipc-concordant="C01B25/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/305</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation from phosphorus-containing compounds by alkaline treatment</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B25/306" definition-exists="false" ipc-concordant="C01B25/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/306</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from phosphates</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/308" definition-exists="false" ipc-concordant="C01B25/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/308</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Methods for converting an alkali metal orthophosphate into another one; Purification; Decolorasing; Dehydrating; Drying</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B25/32" definition-exists="true" ipc-concordant="C01B25/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Phosphates of magnesium, calcium, strontium, or barium</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/321" definition-exists="true" ipc-concordant="C01B25/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/321</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Methods for converting an alkaline earth metal ortho-phosphate into another ortho-phosphate </text><reference><text>by reaction, e.g. of phosphate rock with phosphoric acid <class-ref scheme="cpc">C01B25/322</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/322" definition-exists="false" ipc-concordant="C01B25/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/322</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation by neutralisation of orthophosphoric acid</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/324" definition-exists="false" ipc-concordant="C01B25/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/324</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation from a reaction solution obtained by acidifying with an acid other than orthophosphoric acid</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/325" definition-exists="true" ipc-concordant="C01B25/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/325</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation by double decomposition</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/327" definition-exists="true" ipc-concordant="C01B25/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/327</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>After-treatment </text><reference><text>increasing the phosphate content of ores <class-ref scheme="cpc">C01B25/32</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/328" definition-exists="false" ipc-concordant="C01B25/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/328</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Defluorination during or after the preparation</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/34" definition-exists="false" ipc-concordant="C01B25/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Magnesium phosphates</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B25/36" definition-exists="false" ipc-concordant="C01B25/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Aluminium phosphates</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B25/37" definition-exists="true" ipc-concordant="C01B25/37" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/37</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Phosphates of heavy metals</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/372" definition-exists="false" ipc-concordant="C01B25/37" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/372</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of titanium, vanadium, zirconium, niobium, hafnium or tantalum</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/375" definition-exists="false" ipc-concordant="C01B25/37" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/375</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of iron</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/377" definition-exists="false" ipc-concordant="C01B25/37" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/377</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of manganese</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B25/38" definition-exists="false" ipc-concordant="C01B25/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Condensed phosphates</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/385" definition-exists="false" ipc-concordant="C01B25/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/385</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of alkaline-earth metals or magnesium</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/39" definition-exists="false" ipc-concordant="C01B25/39" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/39</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of alkali metals</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B25/395" definition-exists="false" ipc-concordant="C01B25/39" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/395</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation and dehydrating</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/40" definition-exists="false" ipc-concordant="C01B25/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Polyphosphates</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B25/405" definition-exists="false" ipc-concordant="C01B25/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/405</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of ammonium</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B25/41" definition-exists="false" ipc-concordant="C01B25/41" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/41</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of alkali metals</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B25/412" definition-exists="false" ipc-concordant="C01B25/41" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/412</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation from alkali metal orthophosphates</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="14" additional-only="false" sort-key="C01B25/414" definition-exists="false" ipc-concordant="C01B25/41" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/414</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Apparatus</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="14" additional-only="false" sort-key="C01B25/416" definition-exists="false" ipc-concordant="C01B25/41" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/416</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Pure alkali metal polyphosphates from impure starting materials</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B25/418" definition-exists="false" ipc-concordant="C01B25/41" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/418</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>After-treatment</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/42" definition-exists="false" ipc-concordant="C01B25/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pyrophosphates</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B25/425" definition-exists="false" ipc-concordant="C01B25/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/425</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of alkali metals</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/44" definition-exists="false" ipc-concordant="C01B25/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Metaphosphates</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B25/445" definition-exists="false" ipc-concordant="C01B25/445" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/445</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of alkali metals</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B25/45" definition-exists="false" ipc-concordant="C01B25/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/45</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing plural metal, or metal and ammonium</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/451" definition-exists="false" ipc-concordant="C01B25/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/451</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>containing metal and ammonium</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B25/455" definition-exists="true" ipc-concordant="C01B25/455" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/455</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing halogen </text><CPC-specific-text><reference><text>completely halogenated alkali metal phosphates <class-ref scheme="cpc">C01D</class-ref>, e.g. lithium hexafluorophosphate <class-ref scheme="cpc">C01D15/005</class-ref></text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/4555" definition-exists="false" ipc-concordant="C01B25/455" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/4555</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Hypochlorite-phosphate double salts, e.g. 4(Na3PO411H2O). NaOCl or so-called chlorinated trisodium phosphate</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B25/46" definition-exists="true" ipc-concordant="C01B25/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/46</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation involving solvent-solvent extraction </text><reference><text>solvent extraction in general <class-ref scheme="cpc">B01D11/00</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B25/461" definition-exists="true" ipc-concordant="C01B25/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B25/461</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the phosphoric acid present in the medium obtained after reaction being first extracted from the liquid phase formed or separated then re-extracted as free acid by using water or as a phosphate by using a basic compound </text><reference><text>selective extraction of impurities contained in acid <class-ref scheme="cpc">C01B25/237</class-ref></text></reference></CPC-specific-text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>The extracting agent may be diluted with a compound or a mixture of compounds which are not solvents for phosphoric acid, e.g. a hydrocarbon</note-paragraph><note-paragraph> Documents which belong to more than one subgroup of <class-ref scheme="cpc">C01B25/462</class-ref> - <class-ref scheme="cpc">C01B25/466</class-ref> are classified by a combination, e.g. <class-ref scheme="cpc">C01B25/462</class-ref> +<class-ref scheme="not-mapped">B4</class-ref>+<class-ref scheme="not-mapped">B8</class-ref> </note-paragraph></note></notes-and-warnings>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/462" definition-exists="false" ipc-concordant="C01B25/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/462</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the extracting agent being alcohol or a mixture of alcohols</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/463" definition-exists="false" ipc-concordant="C01B25/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/463</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the extracting agent being a ketone or a mixture of ketones</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/464" definition-exists="false" ipc-concordant="C01B25/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/464</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the extracting agent being an ether or a mixture of ethers</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/465" definition-exists="false" ipc-concordant="C01B25/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/465</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the extracting agent being an ester or a mixture of esters</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B25/466" definition-exists="false" ipc-concordant="C01B25/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/466</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the extracting agent being a nitrogenous solvent or a mixture of nitrogenous solvents such as amines or amides</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B25/467" definition-exists="false" ipc-concordant="C01B25/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/467</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the extracting agent being already present during the phosphate-containing material reaction step</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B25/468" definition-exists="true" ipc-concordant="C01B25/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B25/468</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the extraction being performed on the reaction slurry itself, i.e. without separating the acid </text><reference><text><class-ref scheme="cpc">C01B25/232</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01B32/00" definition-exists="true" ipc-concordant="C01B32/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/00</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Carbon</text></title-part><title-part><text>Compounds thereof </text><reference><text><class-ref scheme="cpc">C01B21/00</class-ref>, <class-ref scheme="cpc">C01B23/00</class-ref> take precedence; percarbonates <class-ref scheme="cpc">C01B15/10</class-ref>; carbon black <class-ref scheme="cpc">C09C1/48</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B32/05" definition-exists="true" ipc-concordant="C01B32/05" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/05</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Preparation or purification of carbon not covered by groups <class-ref scheme="cpc">C01B32/15</class-ref>, <class-ref scheme="cpc">C01B32/20</class-ref>, <class-ref scheme="cpc">C01B32/25</class-ref>, <class-ref scheme="cpc">C01B32/30</class-ref></text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B32/10" definition-exists="false" ipc-concordant="C01B32/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/10</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Carbon fluorides, e.g. [CF]<sub>n</sub>or [C<sub>2</sub>F]<sub>n</sub> </text><reference><text>graphite intercalation thereof <class-ref scheme="cpc">C01B32/22</class-ref></text></reference></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B32/15" definition-exists="false" ipc-concordant="C01B32/15" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/15</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Nano-sized carbon materials</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B32/152" definition-exists="true" ipc-concordant="C01B32/152" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-01-01" status="published"><classification-symbol>C01B32/152</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Fullerenes</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/154" definition-exists="false" ipc-concordant="C01B32/154" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-01-01" status="published"><classification-symbol>C01B32/154</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Preparation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/156" definition-exists="false" ipc-concordant="C01B32/156" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-01-01" status="published"><classification-symbol>C01B32/156</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>After-treatment</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B32/158" definition-exists="true" ipc-concordant="C01B32/158" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-01-01" status="published"><classification-symbol>C01B32/158</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Carbon nanotubes</text></title-part></class-title><notes-and-warnings><note type="note"><note-paragraph><CPC-specific-note>In groups <class-ref scheme="cpc">C01B32/158</class-ref> - <class-ref scheme="cpc">C01B32/18</class-ref>, it is desirable to add indexing codes of <class-ref scheme="cpc">C01B2202/00</class-ref> - <class-ref scheme="cpc">C01B2202/36</class-ref> for structural aspects or properties of carbon nanotubes.</CPC-specific-note></note-paragraph></note></notes-and-warnings>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/159" definition-exists="false" ipc-concordant="C01B32/159" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-01-01" status="published"><classification-symbol>C01B32/159</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>single-walled</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/16" definition-exists="false" ipc-concordant="C01B32/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/16</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Preparation</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B32/162" definition-exists="true" ipc-concordant="C01B32/162" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/162</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>characterised by catalysts</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B32/164" definition-exists="true" ipc-concordant="C01B32/164" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/164</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>involving continuous processes</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B32/166" definition-exists="false" ipc-concordant="C01B32/166" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/166</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>in liquid phase</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/168" definition-exists="true" ipc-concordant="C01B32/168" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/168</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>After-treatment</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B32/17" definition-exists="false" ipc-concordant="C01B32/17" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/17</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Purification</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B32/172" definition-exists="true" ipc-concordant="C01B32/172" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/172</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Sorting</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B32/174" definition-exists="false" ipc-concordant="C01B32/174" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/174</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Derivatisation</text></title-part><title-part><text>Solubilisation</text></title-part><title-part><text>Dispersion in solvents</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B32/176" definition-exists="false" ipc-concordant="C01B32/176" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/176</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Cutting</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B32/178" definition-exists="true" ipc-concordant="C01B32/178" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/178</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Opening</text></title-part><title-part><text>Filling</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B32/18" definition-exists="true" ipc-concordant="C01B32/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/18</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Nanoonions</text></title-part><title-part><text>Nanoscrolls</text></title-part><title-part><text>Nanohorns</text></title-part><title-part><text>Nanocones</text></title-part><title-part><text>Nanowalls</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B32/182" definition-exists="true" ipc-concordant="C01B32/182" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-01-01" status="published"><classification-symbol>C01B32/182</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Graphene</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/184" definition-exists="false" ipc-concordant="C01B32/184" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/184</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Preparation</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B32/186" definition-exists="true" ipc-concordant="C01B32/186" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/186</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>by chemical vapour deposition [CVD]</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B32/188" definition-exists="false" ipc-concordant="C01B32/188" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/188</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>by epitaxial growth</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B32/19" definition-exists="false" ipc-concordant="C01B32/19" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/19</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>by exfoliation</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B32/192" definition-exists="false" ipc-concordant="C01B32/192" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/192</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>starting from graphitic oxides</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/194" definition-exists="true" ipc-concordant="C01B32/194" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/194</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>After-treatment</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B32/196" definition-exists="false" ipc-concordant="C01B32/196" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/196</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Purification</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/198" definition-exists="false" ipc-concordant="C01B32/198" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-01-01" status="published"><classification-symbol>C01B32/198</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Graphene oxide</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B32/20" definition-exists="false" ipc-concordant="C01B32/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-01-01" status="published"><classification-symbol>C01B32/20</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Graphite</text></title-part></class-title><notes-and-warnings><note type="note"><note-paragraph><CPC-specific-note>In groups <class-ref scheme="cpc">C01B32/20</class-ref> - <class-ref scheme="cpc">C01B32/196</class-ref>, it is desirable to add indexing codes of <class-ref scheme="cpc">C01B2204/00</class-ref> - <class-ref scheme="cpc">C01B2204/32</class-ref> for structural aspects or properties of graphene.</CPC-specific-note></note-paragraph></note></notes-and-warnings>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B32/205" definition-exists="false" ipc-concordant="C01B32/205" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-01-01" status="published"><classification-symbol>C01B32/205</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Preparation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B32/21" definition-exists="false" ipc-concordant="C01B32/21" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-01-01" status="published"><classification-symbol>C01B32/21</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>After-treatment</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/215" definition-exists="false" ipc-concordant="C01B32/215" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/215</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Purification</text></title-part><title-part><text>Recovery or purification of graphite formed in iron making, e.g. kish graphite</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/22" definition-exists="false" ipc-concordant="C01B32/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/22</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Intercalation</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B32/225" definition-exists="false" ipc-concordant="C01B32/225" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/225</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Expansion</text></title-part><title-part><text>Exfoliation</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/23" definition-exists="true" ipc-concordant="C01B32/23" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/23</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Oxidation</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B32/25" definition-exists="true" ipc-concordant="C01B32/25" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-01-01" status="published"><classification-symbol>C01B32/25</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Diamond</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B32/26" definition-exists="false" ipc-concordant="C01B32/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-01-01" status="published"><classification-symbol>C01B32/26</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Preparation </text><reference><text>by using ultra-high pressure <class-ref scheme="cpc">B01J3/06</class-ref>; by crystal growth <class-ref scheme="cpc">C30B29/04</class-ref></text></reference></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B32/28" definition-exists="false" ipc-concordant="C01B32/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/28</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>After-treatment, e.g. purification, irradiation, separation or recovery</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B32/30" definition-exists="true" ipc-concordant="C01B32/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-01-01" status="published"><classification-symbol>C01B32/30</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Active carbon</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B32/306" definition-exists="true" ipc-concordant="C01B32/306" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/306</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>with molecular sieve properties</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B32/312" definition-exists="false" ipc-concordant="C01B32/312" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-01-01" status="published"><classification-symbol>C01B32/312</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Preparation</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/318" definition-exists="false" ipc-concordant="C01B32/318" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/318</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>characterised by the starting materials</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B32/324" definition-exists="false" ipc-concordant="C01B32/324" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/324</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>from waste materials, e.g. tyres or spent sulfite pulp liquor</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B32/33" definition-exists="false" ipc-concordant="C01B32/33" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/33</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>from distillation residues of coal or petroleum</text></title-part><title-part><text>from petroleum acid sludge</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/336" definition-exists="true" ipc-concordant="C01B32/336" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/336</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>characterised by gaseous activating agents</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/342" definition-exists="true" ipc-concordant="C01B32/342" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/342</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>characterised by non-gaseous activating agents</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B32/348" definition-exists="true" ipc-concordant="C01B32/348" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/348</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Metallic compounds</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B32/354" definition-exists="false" ipc-concordant="C01B32/354" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-01-01" status="published"><classification-symbol>C01B32/354</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>After-treatment</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/36" definition-exists="false" ipc-concordant="C01B32/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/36</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Reactivation or regeneration</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B32/366" definition-exists="false" ipc-concordant="C01B32/366" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/366</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>by physical processes, e.g. by irradiation, by using electric current passing through carbonaceous feedstock or by using recyclable inert heating bodies</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/372" definition-exists="false" ipc-concordant="C01B32/372" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/372</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Coating</text></title-part><title-part><text>Grafting</text></title-part><title-part><text>Microencapsulation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/378" definition-exists="false" ipc-concordant="C01B32/378" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-01-01" status="published"><classification-symbol>C01B32/378</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Purification</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/382" definition-exists="false" ipc-concordant="C01B32/354" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-01-01" status="published"><classification-symbol>C01B32/382</classification-symbol><class-title date-revised="2017-08-01"><title-part><CPC-specific-text><text>Making shaped products, e.g. fibres, spheres, membranes or foam</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/384" definition-exists="true" ipc-concordant="C01B32/384" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/384</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Granulation</text></title-part></class-title><notes-and-warnings><note type="note"><note-paragraph>In this group, the term "granulation" also <u>covers</u> methods of preparation of active carbon using carbonaceous precursors <u>per se</u> and binders, e.g. pitch.</note-paragraph></note></notes-and-warnings></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B32/39" definition-exists="false" ipc-concordant="C01B32/39" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/39</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Apparatus for the preparation thereof</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B32/40" definition-exists="true" ipc-concordant="C01B32/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/40</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Carbon monoxide</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B32/50" definition-exists="false" ipc-concordant="C01B32/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/50</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Carbon dioxide</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B32/55" definition-exists="false" ipc-concordant="C01B32/55" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/55</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Solidifying</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B32/60" definition-exists="true" ipc-concordant="C01B32/60" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/60</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Preparation of carbonates or bicarbonates in general </text><reference><text>of percarbonates <class-ref scheme="cpc">C01B15/10</class-ref>; of specific carbonates or bicarbonates according to the cation <class-ref scheme="cpc">C01B</class-ref>-<class-ref scheme="cpc">C01G</class-ref></text></reference></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B32/70" definition-exists="false" ipc-concordant="C01B32/70" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/70</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Compounds containing carbon and sulfur, e.g. thiophosgene</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B32/72" definition-exists="false" ipc-concordant="C01B32/72" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/72</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Carbon disulfide</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/75" definition-exists="false" ipc-concordant="C01B32/75" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/75</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Preparation by reacting sulfur or sulfur compounds with hydrocarbons</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B32/77" definition-exists="false" ipc-concordant="C01B32/77" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/77</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Carbon oxysulfide</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B32/80" definition-exists="true" ipc-concordant="C01B32/80" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/80</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Phosgene</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B32/90" definition-exists="true" ipc-concordant="C01B32/90" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/90</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Carbides</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B32/907" definition-exists="false" ipc-concordant="C01B32/907" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/907</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Oxycarbides</text></title-part><title-part><text>Sulfocarbides</text></title-part><title-part><text>Mixture of carbides</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B32/914" definition-exists="false" ipc-concordant="C01B32/914" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/914</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Carbides of single elements</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/921" definition-exists="false" ipc-concordant="C01B32/921" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/921</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Titanium carbide</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/928" definition-exists="false" ipc-concordant="C01B32/928" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/928</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Carbides of actinides</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/935" definition-exists="false" ipc-concordant="C01B32/935" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/935</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Carbides of alkali metals, strontium, barium or magnesium</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/942" definition-exists="false" ipc-concordant="C01B32/942" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/942</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Calcium carbide</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/949" definition-exists="false" ipc-concordant="C01B32/949" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/949</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Tungsten or molybdenum carbides</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/956" definition-exists="false" ipc-concordant="C01B32/956" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-01-01" status="published"><classification-symbol>C01B32/956</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Silicon carbide</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B32/963" definition-exists="false" ipc-concordant="C01B32/963" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-01-01" status="published"><classification-symbol>C01B32/963</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Preparation from compounds containing silicon</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B32/97" definition-exists="false" ipc-concordant="C01B32/97" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-01-01" status="published"><classification-symbol>C01B32/97</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Preparation from SiO or SiO<sub>2</sub></text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B32/977" definition-exists="false" ipc-concordant="C01B32/977" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/977</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Preparation from organic compounds containing silicon</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B32/984" definition-exists="false" ipc-concordant="C01B32/984" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B32/984</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Preparation from elemental silicon</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B32/991" definition-exists="false" ipc-concordant="C01B32/991" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-01-01" status="published"><classification-symbol>C01B32/991</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Boron carbide</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01B33/00" definition-exists="true" ipc-concordant="C01B33/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B33/00</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Silicon</text></title-part><title-part><text>Compounds thereof </text><reference><CPC-specific-text><text><class-ref scheme="cpc">C01B6/00</class-ref>,</text></CPC-specific-text><text> <class-ref scheme="cpc">C01B21/00</class-ref>, <class-ref scheme="cpc">C01B23/00</class-ref> take precedence; persilicates <class-ref scheme="cpc">C01B15/14</class-ref>; carbides <class-ref scheme="cpc">C01B32/956</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B33/02" definition-exists="true" ipc-concordant="C01B33/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Silicon </text><reference><text>forming single crystals or homogeneous polycrystalline material with defined structure <class-ref scheme="cpc">C30B</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B33/021" definition-exists="true" ipc-concordant="C01B33/021" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/021</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation </text><reference><text>chemical coating from the vapour phase <class-ref scheme="cpc">C23C16/00</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B33/023" definition-exists="false" ipc-concordant="C01B33/023" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/023</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by reduction of silica or </text><CPC-specific-text><text>free</text></CPC-specific-text><text> silica-containing material</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/025" definition-exists="false" ipc-concordant="C01B33/025" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with carbon or a solid carbonaceous material, i.e. carbo-thermal process</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B33/027" definition-exists="false" ipc-concordant="C01B33/027" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/027</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by decomposition or reduction of gaseous or vaporised silicon compounds other than silica or silica-containing material</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/029" definition-exists="false" ipc-concordant="C01B33/029" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/029</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by decomposition of monosilane</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/03" definition-exists="false" ipc-concordant="C01B33/03" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/03</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by decomposition of silicon halides or halosilanes or reduction thereof with hydrogen as the only reducing agent</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/031" definition-exists="false" ipc-concordant="C01B33/031" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/031</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by decomposition of silicon tetraiodide</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/033" definition-exists="false" ipc-concordant="C01B33/033" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/033</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by reduction of silicon halides or halosilanes with a metal or a metallic alloy as the only reducing agents</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/035" definition-exists="false" ipc-concordant="C01B33/035" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/035</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by decomposition or reduction of gaseous or vaporised silicon compounds in the presence of heated filaments of silicon, carbon or a refractory metal, e.g. tantalum or tungsten, or in the presence of heated silicon rods on which the formed silicon is deposited, a silicon rod being obtained, e.g. Siemens process</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B33/037" definition-exists="true" ipc-concordant="C01B33/037" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/037</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification </text><reference><text>by zone-melting <class-ref scheme="cpc">C30B13/00</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B33/039" definition-exists="false" ipc-concordant="C01B33/039" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/039</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by conversion of the silicon into a compound, optional purification of the compound, and reconversion into silicon</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B33/04" definition-exists="true" ipc-concordant="C01B33/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrides of silicon</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B33/043" definition-exists="false" ipc-concordant="C01B33/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/043</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Monosilane</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B33/046" definition-exists="false" ipc-concordant="C01B33/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/046</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Purification</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B33/06" definition-exists="true" ipc-concordant="C01B33/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Metal silicides </text><reference><text>alloys <class-ref scheme="cpc">C22</class-ref></text></reference></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B33/08" definition-exists="false" ipc-concordant="C01B33/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Compounds containing halogen</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B33/10" definition-exists="false" ipc-concordant="C01B33/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Compounds containing silicon, fluorine, and other elements</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B33/103" definition-exists="false" ipc-concordant="C01B33/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/103</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Fluosilicic acid; Salts thereof</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B33/107" definition-exists="false" ipc-concordant="C01B33/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/107</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Halogenated silanes</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B33/10705" definition-exists="false" ipc-concordant="C01B33/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/10705</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Tetrafluoride</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B33/1071" definition-exists="false" ipc-concordant="C01B33/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/1071</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Tetrachloride, trichlorosilane or silicochloroform, dichlorosilane, monochlorosilane or mixtures thereof</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/10715" definition-exists="false" ipc-concordant="C01B33/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/10715</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>prepared by reacting chlorine with silicon or a silicon-containing material</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/10721" definition-exists="false" ipc-concordant="C01B33/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/10721</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with the preferential formation of tetrachloride</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B33/10726" definition-exists="false" ipc-concordant="C01B33/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/10726</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from silicon</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/10731" definition-exists="false" ipc-concordant="C01B33/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/10731</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with the preferential formation of trichlorosilane</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B33/10736" definition-exists="false" ipc-concordant="C01B33/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/10736</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from silicon</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/10742" definition-exists="false" ipc-concordant="C01B33/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/10742</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>prepared by hydrochlorination of silicon or of a silicon-containing material</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/10747" definition-exists="false" ipc-concordant="C01B33/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/10747</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with the preferential formation of tetrachloride</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B33/10752" definition-exists="false" ipc-concordant="C01B33/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/10752</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from silicon</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/10757" definition-exists="false" ipc-concordant="C01B33/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/10757</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with the preferential formation of trichlorosilane</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B33/10763" definition-exists="false" ipc-concordant="C01B33/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/10763</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from silicon</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B33/10768" definition-exists="false" ipc-concordant="C01B33/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/10768</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Tetrabromide; Tetraiodide</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B33/10773" definition-exists="false" ipc-concordant="C01B33/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/10773</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Halogenated silanes obtained by disproportionation and molecular rearrangement of halogenated silanes</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B33/10778" definition-exists="false" ipc-concordant="C01B33/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/10778</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Purification</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/10784" definition-exists="false" ipc-concordant="C01B33/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/10784</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by adsorption</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/10789" definition-exists="false" ipc-concordant="C01B33/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/10789</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the adsorbing material being formed <u>in situ</u>, e.g. by partial hydrolysis</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/10794" definition-exists="false" ipc-concordant="C01B33/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/10794</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by forming addition compounds or complexes, the reactant being possibly contained in an adsorbent</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B33/113" definition-exists="true" ipc-concordant="C01B33/113" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/113</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Silicon oxides</text></title-part><title-part><text>Hydrates thereof </text><CPC-specific-text><reference><text>preparing monoxide by reduction of siliceous material <class-ref scheme="cpc">C01B33/182</class-ref></text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B33/12" definition-exists="true" ipc-concordant="C01B33/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Silica</text></title-part><title-part><text>Hydrates thereof, e.g. lepidoic silicic acid</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B33/122" definition-exists="false" ipc-concordant="C01B33/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/122</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Lepidoic silicic acid</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B33/124" definition-exists="false" ipc-concordant="C01B33/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/124</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation of adsorbing porous silica not in gel form and not finely divided, i.e. silicon skeletons, by acidic treatment of siliceous materials</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B33/126" definition-exists="false" ipc-concordant="C01B33/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/126</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation of silica of undetermined type</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/128" definition-exists="false" ipc-concordant="C01B33/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/128</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by acidic treatment of aqueous silicate solutions</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B33/14" definition-exists="false" ipc-concordant="C01B33/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Colloidal silica, e.g. dispersions, gels, sols</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/141" definition-exists="false" ipc-concordant="C01B33/141" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/141</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of hydrosols or aqueous dispersions</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/1412" definition-exists="false" ipc-concordant="C01B33/141" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/1412</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by oxidation of silicon in basic medium</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/1415" definition-exists="false" ipc-concordant="C01B33/141" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/1415</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by suspending finely divided silica in water</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B33/1417" definition-exists="false" ipc-concordant="C01B33/141" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/1417</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>an aqueous dispersion being obtained</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/142" definition-exists="false" ipc-concordant="C01B33/142" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/142</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by acidic treatment of silicates</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B33/143" definition-exists="false" ipc-concordant="C01B33/143" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/143</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of aqueous solutions of silicates</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="14" additional-only="false" sort-key="C01B33/1435" definition-exists="false" ipc-concordant="C01B33/143" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/1435</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using ion exchangers</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/145" definition-exists="false" ipc-concordant="C01B33/145" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/145</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of hydroorganosols, organosols or dispersions in an organic medium</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/146" definition-exists="true" ipc-concordant="C01B33/146" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/146</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>After-treatment of sols </text><reference><CPC-specific-text><text>preparation of hydrosols or aqueous dispersions from hydroorganosols, organosols or dispersions in an organic medium <class-ref scheme="cpc">C01B33/141</class-ref></text></CPC-specific-text><text>; preparation of hydroorganosols, organosols or dispersions in an organic medium from hydrosols </text><CPC-specific-text><text>or aqueous dispersions</text></CPC-specific-text><text> <class-ref scheme="cpc">C01B33/145</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/1465" definition-exists="false" ipc-concordant="C01B33/146" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/1465</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>"Build-up" of particles using only one sol and a "heel" consisting or not of the sol</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/148" definition-exists="true" ipc-concordant="C01B33/148" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/148</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Concentration</text></title-part><title-part><text>Drying</text></title-part><title-part><text>Dehydration</text></title-part><title-part><text>Stabilisation</text></title-part><title-part><text>Purification </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B33/1465</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B33/1485" definition-exists="false" ipc-concordant="C01B33/148" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/1485</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Stabilisation, e.g. prevention of gelling; Purification</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/149" definition-exists="false" ipc-concordant="C01B33/149" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/149</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Coating</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/151" definition-exists="false" ipc-concordant="C01B33/151" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/151</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by progressively adding a sol to a different sol, i.e. "build-up" of particles using a "heel"</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/152" definition-exists="false" ipc-concordant="C01B33/152" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/152</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of hydrogels</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/1525" definition-exists="false" ipc-concordant="C01B33/152" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/1525</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from or via fluosilicic acid or salts thereof</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/154" definition-exists="false" ipc-concordant="C01B33/154" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/154</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by acidic treatment of aqueous silicate solutions</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B33/1543" definition-exists="false" ipc-concordant="C01B33/154" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/1543</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using ion exchangers</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B33/1546" definition-exists="false" ipc-concordant="C01B33/154" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/1546</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the first formed hydrosol being converted to a hydrogel by introduction into an organic medium immiscible or only partly miscible with water</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/155" definition-exists="false" ipc-concordant="C01B33/155" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/155</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of hydroorganogels or organogels</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/157" definition-exists="false" ipc-concordant="C01B33/157" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/157</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>After-treatment of gels</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/158" definition-exists="false" ipc-concordant="C01B33/158" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/158</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification</text></title-part><title-part><text>Drying</text></title-part><title-part><text>Dehydrating</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B33/1585" definition-exists="true" ipc-concordant="C01B33/158" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/1585</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Dehydration into aerogels</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/159" definition-exists="false" ipc-concordant="C01B33/159" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/159</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Coating or hydrophobisation</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B33/16" definition-exists="true" ipc-concordant="C01B33/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of silica xerogels</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/163" definition-exists="false" ipc-concordant="C01B33/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/163</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by hydrolysis of organosilicon compounds, e.g. ethyl orthosilicate</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/166" definition-exists="false" ipc-concordant="C01B33/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/166</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by acidification of silicate in the presence of an inert organic phase</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B33/18" definition-exists="true" ipc-concordant="C01B33/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of finely divided silica neither in sol nor in gel form</text></title-part><title-part><text>After-treatment thereof </text><reference><text>preparation of aerogels by dehydrating gels <class-ref scheme="cpc">C01B33/158</class-ref>; treatment to enhance the pigmenting or filling properties <class-ref scheme="cpc">C09C</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/181" definition-exists="false" ipc-concordant="C01B33/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/181</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by a dry process</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/182" definition-exists="false" ipc-concordant="C01B33/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/182</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by reduction of a siliceous material, e.g. with a carbonaceous reducing agent and subsequent oxidation of the silicon monoxide formed</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/183" definition-exists="false" ipc-concordant="C01B33/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/183</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by oxidation or hydrolysis in the vapour phase of silicon compounds such as halides, trichlorosilane, monosilane</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B33/184" definition-exists="false" ipc-concordant="C01B33/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/184</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by hydrolysis of tetrafluoride</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/185" definition-exists="false" ipc-concordant="C01B37/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/185</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of crystalline silica-polymorphs having molecular sieve properties, e.g. silicalites</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/186" definition-exists="false" ipc-concordant="C01B33/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/186</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from or via fluosilicic acid or salts thereof by a wet process</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/187" definition-exists="false" ipc-concordant="C01B33/187" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/187</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by acidic treatment of silicates</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/193" definition-exists="false" ipc-concordant="C01B33/193" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/193</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of aqueous solutions of silicates</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B33/20" definition-exists="true" ipc-concordant="C01B33/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B33/20</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Silicates </text><reference><text>persilicates <class-ref scheme="cpc">C01B15/14</class-ref> </text><CPC-specific-text><text>; containing aluminium <class-ref scheme="cpc">C01B33/26</class-ref></text></CPC-specific-text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B33/22" definition-exists="false" ipc-concordant="C01B33/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Magnesium silicates</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B33/24" definition-exists="false" ipc-concordant="C01B33/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Alkaline-earth metal silicates</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B33/26" definition-exists="false" ipc-concordant="C01B33/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B33/26</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Aluminium-containing silicates </text><CPC-specific-text><text>, i.e. silico-aluminates</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B33/28" definition-exists="true" ipc-concordant="C01B33/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C01B33/28</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Base exchange silicates, e.g. zeolites </text><reference><text>regeneration <class-ref scheme="cpc">B01J49/00</class-ref></text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/2807" definition-exists="false" ipc-concordant="C01B33/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-05-01" status="published"><classification-symbol>C01B33/2807</classification-symbol><class-title date-revised="2020-05-01"><title-part><CPC-specific-text><text>Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/2815" definition-exists="false" ipc-concordant="C01B33/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/2815</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of type A (UNION CARBIDE trade name; corresponds to GRACE's types Z-12 or Z-12L)</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B33/2823" definition-exists="false" ipc-concordant="C01B33/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/2823</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from aqueous solutions of an alkali metal aluminate and an alkali metal silicate excluding any other source of alumina or silica</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B33/283" definition-exists="false" ipc-concordant="C01B33/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/283</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from a reaction mixture containing at least one aluminium silicate or aluminosilicate of a clay-type, e.g. kaolin or metakaolin or its exotherm modification or allophane </text><reference><text>containing a single clay substantially chemically modified with an acid, i.e. beyond the activation state <class-ref scheme="cpc">C01B33/2815</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/2838" definition-exists="false" ipc-concordant="C01B33/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/2838</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of faujasite type, or type X or Y (UNION CARBIDE trade names; correspond to GRACE's types Z-14 and Z-14HS, respectively)</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B33/2846" definition-exists="false" ipc-concordant="C01B33/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/2846</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of type X</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B33/2853" definition-exists="false" ipc-concordant="C01B33/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/2853</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of type Y</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/2861" definition-exists="false" ipc-concordant="C01B33/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/2861</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of mordenite type, e.g. ptilolite or dachiardite</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/2869" definition-exists="false" ipc-concordant="C01B33/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/2869</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of other types characterised by an X-ray spectrum and a definite composition</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/2876" definition-exists="false" ipc-concordant="C01B33/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/2876</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from a reacting mixture containing an amine or an organic cation, e.g. a quaternary onium cation-ammonium, phosphonium, stibonium</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/2884" definition-exists="false" ipc-concordant="C01B33/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/2884</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the aluminium or the silicon in the network being partly replaced</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/2892" definition-exists="false" ipc-concordant="C01B33/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/2892</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>containing an element or a compound occluded in the pores of the network, e.g. an oxide already present in the starting reaction mixture</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B33/32" definition-exists="true" ipc-concordant="C01B33/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C01B33/32</classification-symbol><class-title date-revised="2015-10-01"><title-part><text>Alkali metal silicates </text><reference><CPC-specific-text><text><class-ref scheme="cpc">C01B33/24</class-ref></text></CPC-specific-text><text> , <class-ref scheme="cpc">C01B33/26</class-ref> take precedence</text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B33/325" definition-exists="true" ipc-concordant="C01B33/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-02-01" status="published"><classification-symbol>C01B33/325</classification-symbol><class-title date-revised="2017-02-01"><title-part><CPC-specific-text><text>After-treatment, e.g. purification or stabilisation of solutions, granulation; Dissolution; Obtaining solid silicate, e.g. from a solution by spray-drying, flashing off water or adding a coagulant</text></CPC-specific-text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph> In this group, obtaining solid silicate, e.g. as a hydrate of a crystalline silicate, from a solution or a hydrate melt by heating or cooling with or without seeding, is not considered as after-treatment, but classified in group <class-ref scheme="cpc">C01B33/32</class-ref></note-paragraph></note></notes-and-warnings></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B33/36" definition-exists="true" ipc-concordant="C01B33/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having base-exchange properties but not having molecular sieve properties </text><reference><text>regeneration thereof <class-ref scheme="cpc">B01J49/00</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B33/38" definition-exists="true" ipc-concordant="C01B33/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type </text><CPC-specific-text><reference><text>activation of naturally occurring clays <class-ref scheme="cpc">B01J20/12</class-ref>; pillared layered base-exchange silicates <class-ref scheme="cpc">B01J29/049</class-ref></text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/40" definition-exists="true" ipc-concordant="C01B33/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Clays</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/405" definition-exists="false" ipc-concordant="C01B33/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/405</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>not containing aluminium</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/42" definition-exists="true" ipc-concordant="C01B33/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B33/42</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Micas </text><CPC-specific-text><text>; Interstratified clay-mica products </text><reference><text>delaminated mica or vermiculite platelets obtained by a process involving cation-exchange <class-ref scheme="cpc">C04B14/208</class-ref></text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B33/425" definition-exists="false" ipc-concordant="C01B33/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/425</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>not containing aluminium</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B33/44" definition-exists="false" ipc-concordant="C01B33/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Products obtained from layered base-exchange silicates by ion-exchange with organic compounds such as ammonium, phosphonium or sulfonium compounds or by intercalation of organic compounds, e.g. organoclay material</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B33/46" definition-exists="true" ipc-concordant="C01B33/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B33/46</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Amorphous silicates, e.g. so-called "amorphous zeolites" </text><reference><text>crystalline zeolites <class-ref scheme="cpc">C01B39/00</class-ref></text></reference></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01B35/00" definition-exists="false" ipc-concordant="C01B35/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-01-01" status="published"><classification-symbol>C01B35/00</classification-symbol><class-title date-revised="2018-01-01"><title-part><text>Boron</text></title-part><title-part><text>Compounds thereof </text><reference><text>monoborane, diborane, metal borohydrides or addition complexes thereof <class-ref scheme="cpc">C01B6/00</class-ref>; perborates <class-ref scheme="cpc">C01B15/12</class-ref>; binary compounds with nitrogen <class-ref scheme="cpc">C01B21/06</class-ref>; </text><CPC-specific-text><text>compounds of noble gases <class-ref scheme="cpc">C01B23/0005</class-ref></text></CPC-specific-text><text>; phosphides <class-ref scheme="cpc">C01B25/08</class-ref>; carbides <class-ref scheme="cpc">C01B32/991</class-ref>; alloys containing boron <class-ref scheme="cpc">C22</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B35/02" definition-exists="false" ipc-concordant="C01B35/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Boron</text></title-part><title-part><text>Borides</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B35/023" definition-exists="false" ipc-concordant="C01B35/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/023</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Boron</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B35/026" definition-exists="false" ipc-concordant="C01B35/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/026</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Higher boron hydrides, i.e. containing at least three boron atoms</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B35/04" definition-exists="false" ipc-concordant="C01B35/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Metal borides</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B35/06" definition-exists="false" ipc-concordant="C01B35/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Boron halogen compounds</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B35/061" definition-exists="false" ipc-concordant="C01B35/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/061</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Halides</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B35/063" definition-exists="false" ipc-concordant="C01B35/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/063</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Tetrafluoboric acid; Salts thereof</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B35/065" definition-exists="false" ipc-concordant="C01B35/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/065</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Tetrafluoboric acid</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B35/066" definition-exists="false" ipc-concordant="C01B35/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/066</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Alkali metal tetrafluoborates</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B35/068" definition-exists="false" ipc-concordant="C01B35/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/068</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Halogenated hydrides</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B35/08" definition-exists="false" ipc-concordant="C01B35/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Compounds containing boron and nitrogen, phosphorus, oxygen, sulfur, selenium or tellurium</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B35/10" definition-exists="false" ipc-concordant="C01B35/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Compounds containing boron and oxygen </text><reference><text><class-ref scheme="cpc">C01B35/06</class-ref> takes precedence</text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B35/1009" definition-exists="false" ipc-concordant="C01B35/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/1009</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having molecular-sieve properties</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B35/1018" definition-exists="false" ipc-concordant="C01B35/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/1018</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Carbonyl compounds derived from boron hydrides</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B35/1027" definition-exists="false" ipc-concordant="C01B35/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/1027</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Oxides</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B35/1036" definition-exists="false" ipc-concordant="C01B35/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/1036</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Boric anhydride</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B35/1045" definition-exists="false" ipc-concordant="C01B35/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/1045</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Oxyacids</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B35/1054" definition-exists="false" ipc-concordant="C01B35/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/1054</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Orthoboric acid</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B35/1063" definition-exists="false" ipc-concordant="C01B35/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/1063</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation from boron ores or borates using acids or salts</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B35/1072" definition-exists="false" ipc-concordant="C01B35/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/1072</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by means of ammonia-carbon dioxide</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B35/1081" definition-exists="false" ipc-concordant="C01B35/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/1081</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation by working up other natural sources, e.g. seawater</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B35/109" definition-exists="false" ipc-concordant="C01B35/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/109</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Purification; Separation; Concentration</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B35/12" definition-exists="false" ipc-concordant="C01B35/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Borates </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B35/1063</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B35/121" definition-exists="false" ipc-concordant="C01B35/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/121</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of alkali metal</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C01B35/122" definition-exists="false" ipc-concordant="C01B35/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/122</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sodium tetraborates; Hydrates thereof, e.g. borax</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B35/123" definition-exists="false" ipc-concordant="C01B35/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/123</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation from boron ores or other borates</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B35/124" definition-exists="false" ipc-concordant="C01B35/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/124</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation by working up natural brines, e.g. seawater</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="C01B35/125" definition-exists="false" ipc-concordant="C01B35/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/125</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Purification; Concentration; Dehydration; Stabilisation; Other after-treatment</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B35/126" definition-exists="false" ipc-concordant="C01B35/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/126</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of alkaline-earth metals, beryllium, aluminium or magnesium</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B35/127" definition-exists="false" ipc-concordant="C01B35/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/127</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of heavy metals</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B35/128" definition-exists="false" ipc-concordant="C01B35/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/128</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>containing plural metal or metal and ammonium</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B35/14" definition-exists="false" ipc-concordant="C01B35/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Compounds containing boron and nitrogen, phosphorus, sulfur, selenium or tellurium</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B35/143" definition-exists="false" ipc-concordant="C01B35/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/143</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Phosphates</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B35/146" definition-exists="false" ipc-concordant="C01B35/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B35/146</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Compounds containing boron and nitrogen, e.g. borazoles </text><reference><text>ammonium tetrafluoborates <class-ref scheme="cpc">C01B35/063</class-ref>; ammonium borates <class-ref scheme="cpc">C01B35/12</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="true" level="6" additional-only="false" sort-key="C01B37/00" date-revised="2013-01-01" status="published"><classification-symbol>C01B37/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Compounds characterised primarily by their physical or chemical properties, rather than by their chemical constitution</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01B37/00" definition-exists="true" ipc-concordant="C01B37/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B37/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Compounds having molecular sieve properties but not having base-exchange properties</text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph> Compounds classified in main group <class-ref scheme="cpc">C01B37/00</class-ref> are also classified in other groups of class <class-ref scheme="cpc">C01</class-ref> according to their composition </note-paragraph></note></notes-and-warnings>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B37/002" definition-exists="false" ipc-concordant="C01B37/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B37/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Metallophosphates not containing aluminium, e.g. gallophosphates or silicogallophosphates</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B37/005" definition-exists="true" ipc-concordant="C01B37/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B37/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Silicates, i.e. so-called metallosilicalites or metallozeosilites</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B37/007" definition-exists="false" ipc-concordant="C01B37/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B37/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Borosilicates</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B37/02" definition-exists="true" ipc-concordant="C01B37/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B37/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Crystalline silica-polymorphs, e.g. silicalites </text><CPC-specific-text><text>dealuminated aluminosilicate zeolites</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B37/04" definition-exists="false" ipc-concordant="C01B37/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B37/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Aluminophosphates (APO compounds)</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B37/06" definition-exists="true" ipc-concordant="C01B37/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B37/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Aluminophosphates containing other elements, e.g. metals, boron</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B37/065" definition-exists="false" ipc-concordant="C01B37/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B37/065</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the other elements being metals only</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B37/08" definition-exists="false" ipc-concordant="C01B37/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B37/08</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Silicoaluminophosphates (SAPO compounds) </text><CPC-specific-text><text>, e.g. CoSAPO</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01B39/00" definition-exists="true" ipc-concordant="C01B39/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-08-01" status="published"><classification-symbol>C01B39/00</classification-symbol><class-title date-revised="2022-08-01"><title-part><text>Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites</text></title-part><title-part><text>Their preparation</text></title-part><title-part><text>After-treatment, e.g. ion-exchange or dealumination </text><reference><text>treatment to modify the sorption properties, e.g. shaping using a binder, <class-ref scheme="cpc">B01J20/10</class-ref>; treatment to modify the catalytic properties, e.g. combination of treatments to make the zeolites appropriate to their use as a catalyst, <class-ref scheme="cpc">B01J29/04</class-ref>; treatment to improve the ion-exchange properties <class-ref scheme="cpc">B01J39/14</class-ref></text></reference></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph> In this group, the following term is used with the meaning indicated: <subnote type="bullet"><note-paragraph>"zeolites" means:<subnote type="roman"><note-paragraph>crystalline aluminosilicates with base-exchange and molecular sieve properties, having three dimensional, microporous lattice framework structure of tetrahedral oxide units;</note-paragraph><note-paragraph>compounds isomorphous to those of the former category, wherein the aluminium or silicon atoms in the framework are partly or wholly replaced by atoms of other elements, e.g. by gallium, germanium, phosphorus or boron.</note-paragraph></subnote></note-paragraph></subnote></note-paragraph><note-paragraph> Compounds classified in main group <class-ref scheme="cpc">C01B39/00</class-ref> are also classified in other groups of class <class-ref scheme="cpc">C01</class-ref> according to their composition </note-paragraph></note></notes-and-warnings>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B39/02" definition-exists="true" ipc-concordant="C01B39/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B39/02</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Crystalline aluminosilicate zeolites</text></title-part><title-part><text>Isomorphous compounds thereof</text></title-part><title-part><text>Direct preparation thereof</text></title-part><title-part><text>Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants</text></title-part><title-part><text>After-treatment thereof</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B39/023" definition-exists="false" ipc-concordant="C01B39/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B39/023</classification-symbol><class-title date-revised="2016-05-01"><title-part><CPC-specific-text><text>Preparation of physical mixtures or intergrowth products of zeolites chosen from group <class-ref scheme="cpc">C01B39/04</class-ref> or two or more of groups <class-ref scheme="cpc">C01B39/14</class-ref> - <class-ref scheme="cpc">C01B39/48</class-ref></text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B39/026" definition-exists="true" ipc-concordant="C01B39/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/026</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>After-treatment</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B39/04" definition-exists="false" ipc-concordant="C01B39/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using at least one organic template directing agent, e.g. an ionic quaternary ammonium compound or an aminated compound</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B39/06" definition-exists="true" ipc-concordant="C01B39/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01B39/06</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Preparation of isomorphous zeolites characterised by measures to replace the aluminium or silicon atoms in the lattice framework by atoms of other elements </text><CPC-specific-text><text>, i.e. by direct or secondary synthesis</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B39/065" definition-exists="false" ipc-concordant="C01B39/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/065</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Galloaluminosilicates; Group IVB- metalloaluminosilicates; Ferroaluminosilicates</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B39/08" definition-exists="false" ipc-concordant="C01B39/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the aluminium atoms being wholly replaced</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B39/082" definition-exists="false" ipc-concordant="C01B39/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/082</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Gallosilicates</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B39/085" definition-exists="false" ipc-concordant="C01B39/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/085</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Group IVB- metallosilicates</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B39/087" definition-exists="false" ipc-concordant="C01B39/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/087</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Ferrosilicates</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B39/10" definition-exists="false" ipc-concordant="C01B39/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the replacing atoms being </text><CPC-specific-text><text>at least</text></CPC-specific-text><text> phosphorus atoms</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B39/12" definition-exists="false" ipc-concordant="C01B39/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the replacing atoms being </text><CPC-specific-text><text>at least</text></CPC-specific-text><text> boron atoms</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B39/14" definition-exists="true" ipc-concordant="C01B39/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Type A</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B39/145" definition-exists="false" ipc-concordant="C01B39/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/145</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using at least one organic template directing agent</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B39/16" definition-exists="true" ipc-concordant="C01B39/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from aqueous solutions of an alkali metal aluminate and an alkali metal silicate excluding any other source of alumina or silica but seeds </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B39/145</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B39/18" definition-exists="true" ipc-concordant="C01B39/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from a reaction mixture containing at least one aluminium silicate or aluminosilicate of a clay type, e.g. kaolin or metakaolin or its exotherm modification or allophane </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B39/145</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B39/20" definition-exists="true" ipc-concordant="C01B39/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Faujasite type, e.g. type X or Y</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B39/205" definition-exists="false" ipc-concordant="C01B39/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/205</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using at least one organic template directing agent; Hexagonal faujasite; Intergrowth products of cubic and hexagonal faujasite</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B39/22" definition-exists="true" ipc-concordant="C01B39/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Type X </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B39/205</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B39/24" definition-exists="true" ipc-concordant="C01B39/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Type Y </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B39/205</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B39/26" definition-exists="true" ipc-concordant="C01B39/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Mordenite type </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B39/023</class-ref>, <class-ref scheme="cpc">C01B39/026</class-ref>, <class-ref scheme="cpc">C01B39/06</class-ref> take precedence</text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B39/265" definition-exists="false" ipc-concordant="C01B39/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/265</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using at least one organic template directing agent</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B39/28" definition-exists="true" ipc-concordant="C01B39/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Phillipsite or harmotome type </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B39/023</class-ref>, <class-ref scheme="cpc">C01B39/026</class-ref>, <class-ref scheme="cpc">C01B39/06</class-ref> take precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B39/30" definition-exists="true" ipc-concordant="C01B39/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Erionite or offretite type, e.g. zeolite T</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B39/305" definition-exists="false" ipc-concordant="C01B39/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/305</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using at least one organic template directing agent</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B39/32" definition-exists="true" ipc-concordant="C01B39/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Type L</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B39/34" definition-exists="true" ipc-concordant="C01B39/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Type ZSM-4</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B39/36" definition-exists="true" ipc-concordant="C01B39/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B39/365" definition-exists="true" ipc-concordant="C01B39/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/365</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Type ZSM-8; Type ZSM-11; ZSM 5/11 intermediate</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B39/38" definition-exists="true" ipc-concordant="C01B39/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Type ZSM-5</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C01B39/40" definition-exists="false" ipc-concordant="C01B39/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using at least one organic template directing agent</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B39/42" definition-exists="true" ipc-concordant="C01B39/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Type ZSM-12</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B39/44" definition-exists="true" ipc-concordant="C01B39/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ferrierite type, e.g. types ZSM-21, ZSM-35 or ZSM-38</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B39/445" definition-exists="false" ipc-concordant="C01B39/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/445</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using at least one organic template directing agent</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B39/46" definition-exists="true" ipc-concordant="C01B39/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/46</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Other types characterised by their X-ray diffraction pattern and their defined composition </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01B39/023</class-ref>, <class-ref scheme="cpc">C01B39/026</class-ref>, <class-ref scheme="cpc">C01B39/06</class-ref> take precedence</text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01B39/48" definition-exists="false" ipc-concordant="C01B39/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/48</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using at least one organic template directing agent</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B39/50" definition-exists="true" ipc-concordant="C01B39/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Zeolites wherein inorganic bases or salts occlude channels in the lattice framework, e.g. sodalite, cancrinite, nosean, hauynite </text><CPC-specific-text><reference><text>ultramarine <class-ref scheme="cpc">C09C1/32</class-ref></text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01B39/52" definition-exists="true" ipc-concordant="C01B39/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/52</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sodalites</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01B39/54" definition-exists="true" ipc-concordant="C01B39/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B39/54</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Phosphates, e.g. APO or SAPO compounds</text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph> Phosphates having either a poorly defined or a weak base-exchange capacity such as MAPO's, SAPO's or BAPO's are classified in <class-ref scheme="cpc">C01B37/00</class-ref></note-paragraph></note></notes-and-warnings></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="true" level="6" additional-only="true" sort-key="C01B201/00" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/00</classification-symbol>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="C01B201/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of ozone by electrical discharge</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B201/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Dischargers used for production of ozone</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B201/12" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Plate-type dischargers</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B201/14" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Concentric/tubular dischargers</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B201/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Electrodes used for obtaining electrical discharge</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B201/22" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Constructional details of the electrodes</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B201/24" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Composition of the electrodes</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B201/30" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Dielectrics used in the electrical dischargers</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B201/32" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Constructional details of the dielectrics</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B201/34" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Composition of the dielectrics</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B201/40" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using several dischargers in series</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B201/50" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Part of the product being recycled</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B201/60" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/60</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Feed streams for electrical dischargers</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B201/62" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/62</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Air</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B201/64" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/64</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Oxygen</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B201/66" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/66</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pretreatment of the feed</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B201/70" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/70</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Cooling of the discharger</text></title-part><title-part><text>Means for making cooling unnecessary</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B201/72" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/72</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by air</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B201/74" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/74</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by liquid</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B201/76" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/76</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Water</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B201/80" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/80</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Additional processes occurring alongside the electrical discharges, e.g. catalytic processes</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B201/82" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/82</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Treatment with ultraviolet light</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B201/84" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/84</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Treatment with magnetic fields</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B201/90" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2201/90</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Control of the process</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="C01B202/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2202/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Structure or properties of carbon nanotubes</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B202/02" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2202/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Single-walled nanotubes</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B202/04" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2202/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nanotubes with a specific amount of walls</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B202/06" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2202/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Multi-walled nanotubes</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B202/08" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2202/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Aligned nanotubes</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B202/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2202/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Filled nanotubes</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B202/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2202/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nanotubes characterized by their properties</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B202/22" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2202/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Electronic properties</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B202/24" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2202/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Thermal properties</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B202/26" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2202/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Mechanical properties</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B202/28" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2202/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Solid content in solvents</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B202/30" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2202/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purity</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B202/32" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2202/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Specific surface area</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B202/34" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2202/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Length</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B202/36" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2202/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Diameter</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="C01B203/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B2203/00</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Integrated processes for the production of hydrogen or synthesis gas </text><reference><text>reactors or details thereof <class-ref scheme="cpc">B01J2208/00</class-ref> - <class-ref scheme="cpc">B01J2219/00</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B203/02" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Processes for making hydrogen or synthesis gas</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/0205" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0205</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing a reforming step</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0211" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0211</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing a non-catalytic reforming step</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B203/0216" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0216</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing a non-catalytic steam reforming step</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B203/0222" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0222</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing a non-catalytic carbon dioxide reforming step</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0227" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0227</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing a catalytic reforming step</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B203/0233" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0233</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the reforming step being a steam reforming step</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B203/0238" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0238</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the reforming step being a carbon dioxide reforming step</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B203/0244" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0244</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the reforming step being an autothermal reforming step, e.g. secondary reforming processes</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/025" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing a partial oxidation step</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0255" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0255</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing a non-catalytic partial oxidation step</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0261" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0261</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing a catalytic partial oxidation step [CPO]</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/0266" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0266</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing a decomposition step</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0272" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0272</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing a non-catalytic decomposition step</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0277" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0277</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing a catalytic decomposition step</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/0283" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0283</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing a CO-shift step, i.e. a water gas shift step</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0288" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0288</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing two CO-shift steps</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0294" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0294</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing three or more CO-shift steps</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B203/04" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing a purification step for the hydrogen or the synthesis gas</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/0405" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0405</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification by membrane separation</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/041" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/041</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>In-situ membrane purification during hydrogen production</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/0415" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0415</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification by absorption in liquids</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/042" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/042</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification by adsorption on solids</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0425" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0425</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>In-situ adsorption process during hydrogen production</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/043" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/043</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Regenerative adsorption process in two or more beds, one for adsorption, the other for regeneration</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/0435" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0435</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Catalytic purification</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/044" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/044</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Selective oxidation of carbon monoxide</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0445" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0445</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Selective methanation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/045" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/045</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification by catalytic desulfurisation</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/0455" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0455</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification by non-catalytic desulfurisation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/046" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/046</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification by cryogenic separation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/0465" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0465</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Composition of the impurity</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/047" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-02-01" status="published"><classification-symbol>C01B2203/047</classification-symbol><class-title date-revised="2017-02-01"><title-part><text>the impurity being carbon monoxide</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0475" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-02-01" status="published"><classification-symbol>C01B2203/0475</classification-symbol><class-title date-revised="2017-02-01"><title-part><text>the impurity being carbon dioxide</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/048" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-02-01" status="published"><classification-symbol>C01B2203/048</classification-symbol><class-title date-revised="2017-02-01"><title-part><text>the impurity being an organic compound</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0485" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-02-01" status="published"><classification-symbol>C01B2203/0485</classification-symbol><class-title date-revised="2017-02-01"><title-part><text>the impurity being a sulfur compound</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/049" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-02-01" status="published"><classification-symbol>C01B2203/049</classification-symbol><class-title date-revised="2017-02-01"><title-part><text>the impurity being carbon</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0495" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-02-01" status="published"><classification-symbol>C01B2203/0495</classification-symbol><class-title date-revised="2017-02-01"><title-part><text>the impurity being water</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B203/06" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Integration with other chemical processes</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/061" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/061</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Methanol production</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/062" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/062</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrocarbon production, e.g. Fischer-Tropsch process</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/063" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/063</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Refinery processes</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/065" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/065</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using hydrotreating, e.g. hydrogenation, hydrodesulfurisation</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/066" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/066</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with fuel cells</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/067" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/067</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the reforming process taking place in the fuel cell</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/068" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/068</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ammonia synthesis</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B203/08" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Methods of heating or cooling</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/0805" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0805</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Methods of heating the process for making hydrogen or synthesis gas</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0811" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0811</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by combustion of fuel</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B203/0816" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0816</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Heating by flames</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B203/0822" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0822</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the fuel containing hydrogen</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B203/0827" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0827</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>at least part of the fuel being a recycle stream</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0833" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0833</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Heating by indirect heat exchange with hot fluids, other than combustion gases, product gases or non-combustive exothermic reaction product gases</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0838" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0838</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by heat exchange with exothermic reactions, other than by combustion of fuel</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B203/0844" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B2203/0844</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>the non-combustive exothermic reaction being another reforming reaction as defined in groups <class-ref scheme="cpc">C01B2203/02</class-ref> - <class-ref scheme="cpc">C01B2203/0294</class-ref></text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/085" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/085</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by electric heating</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0855" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0855</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by electromagnetic heating</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0861" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0861</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by plasma</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0866" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0866</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by combination of different heating methods</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/0872" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0872</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Methods of cooling</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0877" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0877</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by direct injection of fluid</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0883" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0883</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by indirect heat exchange</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/0888" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0888</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by evaporation of a fluid</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B203/0894" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/0894</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Generation of steam</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B203/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Catalysts for performing the hydrogen forming reactions</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/1005" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1005</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangement or shape of catalyst</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/1011" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1011</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Packed bed of catalytic structures, e.g. particles, packing elements</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B203/1017" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1017</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>characterised by the form of the structure</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/1023" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1023</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Catalysts in the form of a monolith or honeycomb</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/1029" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1029</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Catalysts in the form of a foam</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/1035" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1035</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Catalyst coated on equipment surfaces, e.g. reactor walls</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/1041" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1041</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Composition of the catalyst</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/1047" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1047</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Group VIII metal catalysts</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B203/1052" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1052</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nickel or cobalt catalysts</text></title-part></class-title>
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|
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C01B203/1058" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1058</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nickel catalysts</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B203/1064" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1064</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Platinum group metal catalysts</text></title-part></class-title>
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|
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C01B203/107" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/107</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Platinum catalysts</text></title-part></class-title></classification-item></classification-item></classification-item>
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|
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/1076" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1076</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Copper or zinc-based catalysts</text></title-part></class-title></classification-item>
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|
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/1082" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1082</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Composition of support materials</text></title-part></class-title></classification-item>
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|
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/1088" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1088</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Non-supported catalysts</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/1094" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1094</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Promotors or activators</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B203/12" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Feeding the process for making hydrogen or synthesis gas</text></title-part></class-title>
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|
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/1205" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1205</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Composition of the feed</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/1211" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1211</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas</text></title-part></class-title>
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|
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B203/1217" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1217</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Alcohols</text></title-part></class-title>
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|
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C01B203/1223" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1223</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Methanol</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C01B203/1229" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1229</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ethanol</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B203/1235" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1235</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrocarbons</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C01B203/1241" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1241</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Natural gas or methane</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C01B203/1247" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1247</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Higher hydrocarbons</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C01B203/1252" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1252</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Cyclic or aromatic hydrocarbons</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/1258" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1258</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pre-treatment of the feed</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/1264" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1264</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Catalytic pre-treatment of the feed</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B203/127" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/127</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Catalytic desulfurisation</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/1276" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1276</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Mixing of different feed components</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/1282" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1282</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using static mixers</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/1288" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1288</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Evaporation of one or more of the different feed components</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/1294" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1294</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Evaporation by heat exchange with hot process stream</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B203/14" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Details of the flowsheet</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/141" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/141</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>At least two reforming, decomposition or partial oxidation steps in parallel</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/142" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/142</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>At least two reforming, decomposition or partial oxidation steps in series</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/143" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/143</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Three or more reforming, decomposition or partial oxidation steps in series</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/145" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/145</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>At least two purification steps in parallel</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/146" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/146</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>At least two purification steps in series</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/147" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/147</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Three or more purification steps in series</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/148" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/148</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>involving a recycle stream to the feed of the process for making hydrogen or synthesis gas</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B203/16" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlling the process</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/1604" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1604</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Starting up the process</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/1609" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1609</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Shutting down the process</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/1614" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1614</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlling the temperature</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/1619" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1619</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Measuring the temperature</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/1623" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1623</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Adjusting the temperature</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/1628" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1628</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlling the pressure</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/1633" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1633</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Measuring the pressure</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/1638" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1638</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Adjusting the pressure</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/1642" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1642</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlling the product</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/1647" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1647</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlling the amount of the product</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B203/1652" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1652</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Measuring the amount of product</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C01B203/1657" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1657</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the product being hydrogen</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C01B203/1661" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1661</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the product being carbon monoxide</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C01B203/1666" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1666</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the product being carbon dioxide</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B203/1671" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1671</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlling the composition of the product</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B203/1676" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1676</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Measuring the composition of the product</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B203/168" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/168</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Adjusting the composition of the product</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/1685" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1685</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Control based on demand of downstream process</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/169" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/169</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlling the feed</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/1695" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/1695</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Adjusting the feed of the combustion</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B203/80" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B2203/80</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Aspect of integrated processes for the production of hydrogen or synthesis gas not covered by groups <class-ref scheme="cpc">C01B2203/02</class-ref> - <class-ref scheme="cpc">C01B2203/1695</class-ref></text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/82" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C01B2203/82</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Several process steps of <class-ref scheme="cpc">C01B2203/02</class-ref> - <class-ref scheme="cpc">C01B2203/08</class-ref> integrated into a single apparatus</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/84" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/84</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Energy production</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B203/86" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2203/86</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Carbon dioxide sequestration</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="C01B204/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2204/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Structure or properties of graphene</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B204/02" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2204/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Single layer graphene</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B204/04" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2204/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Specific amount of layers or specific thickness</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B204/06" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2204/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Graphene nanoribbons</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B204/065" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2204/065</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>characterized by their width or by their aspect ratio</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B204/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2204/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Graphene characterized by its properties</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B204/22" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2204/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Electronic properties</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B204/24" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2204/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Thermal properties</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B204/26" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2204/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Mechanical properties</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B204/28" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2204/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Solid content in solvents</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B204/30" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2204/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purity</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B204/32" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2204/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Size or surface area</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="C01B210/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification or separation of specific gases</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B210/0001" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0001</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Separation or purification processing</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0003" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0003</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Chemical processing</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B210/0004" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0004</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by oxidation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B210/0006" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0006</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by reduction</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B210/0007" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0007</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by complexation</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0009" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0009</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Physical processing</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B210/001" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by making use of membranes</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B210/0012" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0012</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>characterised by the membrane</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B210/0014" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0014</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by adsorption in solids</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B210/0015" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0015</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>characterised by the adsorbent</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C01B210/0017" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0017</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Carbon-based materials</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C01B210/0018" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0018</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Zeolites</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C01B210/002" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Other molecular sieve materials</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B210/0021" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0021</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Temperature swing adsorption</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C01B210/0023" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0023</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>in getters</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B210/0025" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0025</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by absorption in liquids</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B210/0026" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0026</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Isotopes of the specific gas</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B210/0028" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0028</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Separation of the specific gas from gas mixtures containing a minor amount of this specific gas</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B210/0029" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0029</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Obtaining noble gases</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0031" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0031</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Helium</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0032" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0032</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Neon</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0034" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0034</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Argon</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0035" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0035</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Krypton</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0037" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0037</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Xenon</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0039" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0039</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Radon</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/004" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/004</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Separation of a mixture of noble gases</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B210/0042" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0042</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Making ultrapure specific gas</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C01B210/0043" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0043</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Impurity removed</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0045" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0045</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Oxygen</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0046" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0046</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nitrogen</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0048" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0048</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Air</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/005" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Carbon monoxide</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0051" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0051</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Carbon dioxide</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0053" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0053</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrogen</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0054" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0054</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrogen halides</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B210/0056" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0056</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrogen fluoride</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B210/0057" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0057</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrogen chloride</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B210/0059" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0059</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrogen bromide</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B210/006" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrogen iodide</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0062" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0062</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Water</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0064" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0064</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrogen sulfide</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0065" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0065</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ammonia</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0067" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0067</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrogen cyanide</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0068" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0068</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Organic compounds</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B210/007" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrocarbons</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0071" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0071</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sulfur oxides</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0073" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0073</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sulfur halides</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0075" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0075</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nitrogen oxides</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0076" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0076</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nitrogen halides</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0078" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0078</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Noble gases</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B210/0079" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0079</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Helium</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B210/0081" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0081</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Neon</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B210/0082" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0082</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Argon</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B210/0084" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0084</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Krypton</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B210/0085" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0085</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Xenon</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B210/0087" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0087</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Radon</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0089" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0089</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Peroxides</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B210/009" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/009</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrogen peroxide</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0092" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0092</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ozone</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0093" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0093</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Metals or metal compounds</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B210/0095" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0095</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Metals</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C01B210/0096" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0096</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Metal hydrides</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C01B210/0098" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01B2210/0098</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Other impurities</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></classification-item></class-scheme> |