ZSI_Reconnect_China/PATSTAT/CPC_data/CPCSchemeXML202302/cpc-scheme-C01D.xml

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<class-scheme publication-date="2023-02-01" scheme-type="cpc" publication-type="official">
<classification-item breakdown-code="false" not-allocatable="true" level="5" additional-only="false" sort-key="C01D" definition-exists="true" date-revised="2017-08-01" status="published"><classification-symbol>C01D</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM </text><reference><text>metal hydrides </text><CPC-specific-text><text>monoborane, diborane or addition complexes thereof</text></CPC-specific-text><text> <class-ref scheme="cpc">C01B6/00</class-ref>; salts of oxyacids of halogens <class-ref scheme="cpc">C01B11/00</class-ref>; peroxides, salts of peroxyacids <class-ref scheme="cpc">C01B15/00</class-ref>; sulfides <class-ref scheme="cpc">C01B17/22</class-ref>; thiosulfates, dithionites, polythionates <class-ref scheme="cpc">C01B17/64</class-ref>; compounds containing selenium or tellurium <class-ref scheme="cpc">C01B19/00</class-ref>; binary compounds of nitrogen with metals <class-ref scheme="cpc">C01B21/06</class-ref>; azides <class-ref scheme="cpc">C01B21/08</class-ref>; </text><CPC-specific-text><text>compounds other than ammonia and cyanogen, containing nitrogen and other non-metals <class-ref scheme="cpc">C01B21/082</class-ref></text></CPC-specific-text><text>; metal amides <class-ref scheme="cpc">C01B21/092</class-ref>; nitrites <class-ref scheme="cpc">C01B21/50</class-ref>; phosphides <class-ref scheme="cpc">C01B21/50</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>; salts of oxyacids of phosphorus <class-ref scheme="cpc">C01B25/16</class-ref>; carbides <class-ref scheme="cpc">C01B32/90</class-ref>; compounds containing silicon <class-ref scheme="cpc">C01B33/00</class-ref>; compounds containing boron <class-ref scheme="cpc">C01B35/00</class-ref>; cyanides <class-ref scheme="cpc">C01C3/08</class-ref>; salts of cyanic acid <class-ref scheme="cpc">C01C3/14</class-ref>; salts of cyanamide <class-ref scheme="cpc">C01C3/16</class-ref>; thiocyanates <class-ref scheme="cpc">C01C3/20</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="true" level="6" additional-only="false" sort-key="C01D1/00" date-revised="2013-01-01" status="published"><classification-symbol>C01D1/00</classification-symbol>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01D1/00" definition-exists="true" ipc-concordant="C01D1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D1/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Oxides or hydroxides of sodium, potassium or alkali metals in general</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D1/02" definition-exists="false" ipc-concordant="C01D1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D1/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Oxides</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D1/04" definition-exists="false" ipc-concordant="C01D1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D1/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydroxides</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D1/20" definition-exists="false" ipc-concordant="C01D1/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D1/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation by reacting oxides or hydroxides with alkali metal salts</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01D1/22" definition-exists="false" ipc-concordant="C01D1/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D1/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with carbonates or bicarbonates</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01D1/24" definition-exists="false" ipc-concordant="C01D1/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D1/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from or via fluorides or silico-fluorides</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D1/26" definition-exists="false" ipc-concordant="C01D1/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D1/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation from or via cyano compounds, e.g. cyanides, cyanamides</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D1/28" definition-exists="false" ipc-concordant="C01D1/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D1/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification</text></title-part><title-part><text>Separation</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01D1/30" definition-exists="false" ipc-concordant="C01D1/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D1/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by crystallisation</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01D1/32" definition-exists="false" ipc-concordant="C01D1/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D1/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by absorption or precipitation</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01D1/34" definition-exists="false" ipc-concordant="C01D1/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D1/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with selective solvents</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01D1/36" definition-exists="false" ipc-concordant="C01D1/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D1/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by oxidation</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01D1/38" definition-exists="false" ipc-concordant="C01D1/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D1/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by dialysis</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C01D1/40" definition-exists="false" ipc-concordant="C01D1/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D1/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by electrolysis</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D1/42" definition-exists="false" ipc-concordant="C01D1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D1/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Concentration</text></title-part><title-part><text>Dehydration</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D1/44" definition-exists="false" ipc-concordant="C01D1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D1/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation in the form of granules, pieces, or other shaped products</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01D3/00" definition-exists="true" ipc-concordant="C01D3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D3/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Halides of sodium, potassium or alkali metals in general </text><CPC-specific-text><reference><text>halides in general <class-ref scheme="cpc">C01B9/00</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D3/02" definition-exists="false" ipc-concordant="C01D3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D3/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fluorides</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D3/04" definition-exists="false" ipc-concordant="C01D3/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D3/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Chlorides</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D3/06" definition-exists="false" ipc-concordant="C01D3/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D3/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation by working up brines</text></title-part><title-part><text>seawater or spent lyes</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D3/08" definition-exists="false" ipc-concordant="C01D3/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D3/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation by working up natural or industrial salt mixtures or siliceous minerals</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D3/10" definition-exists="false" ipc-concordant="C01D3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D3/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Bromides</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D3/12" definition-exists="false" ipc-concordant="C01D3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D3/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Iodides</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D3/14" definition-exists="false" ipc-concordant="C01D3/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D3/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D3/145" definition-exists="false" ipc-concordant="C01D3/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D3/145</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by solid ion-exchangers or solid chelating agents</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D3/16" definition-exists="false" ipc-concordant="C01D3/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D3/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by precipitation or adsorption </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01D3/145</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D3/18" definition-exists="false" ipc-concordant="C01D3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D3/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with selective solvents</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D3/20" definition-exists="false" ipc-concordant="C01D3/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D3/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by melting</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D3/22" definition-exists="false" ipc-concordant="C01D3/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D3/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation in the form of granules, pieces, or other shaped products</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D3/24" definition-exists="false" ipc-concordant="C01D3/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D3/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Influencing the crystallisation process</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D3/26" definition-exists="false" ipc-concordant="C01D3/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D3/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preventing the absorption of moisture or caking of the crystals</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01D5/00" definition-exists="true" ipc-concordant="C01D5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D5/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sulfates or sulfites of sodium, potassium or alkali metals in general </text><CPC-specific-text><reference><text>sulfites in general <class-ref scheme="cpc">C01B17/62</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D5/002" definition-exists="false" ipc-concordant="C01D5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D5/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preventing the absorption of moisture or caking of the crystals by additives</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D5/004" definition-exists="false" ipc-concordant="C01D5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D5/004</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation in the form of granules, pieces or other shaped products</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D5/006" definition-exists="false" ipc-concordant="C01D5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D5/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Recovery of sodium sulfate from coagulation baths for the spinning of viscose</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D5/008" definition-exists="false" ipc-concordant="C01D5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D5/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation of potassium sulfate from alunite</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D5/02" definition-exists="false" ipc-concordant="C01D5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D5/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of sulfates from alkali metal salts and sulfuric acid or bisulfates</text></title-part><title-part><text>Preparation of bisulfates</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D5/04" definition-exists="false" ipc-concordant="C01D5/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D5/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of sulfates with the aid of sulfurous acid or sulfites, e.g. Hargreaves process </text><CPC-specific-text><reference><text>pyrosulfites or metabisulfites <class-ref scheme="cpc">C01D5/145</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D5/06" definition-exists="false" ipc-concordant="C01D5/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D5/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of sulfates by double decomposition</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D5/08" definition-exists="false" ipc-concordant="C01D5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D5/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with each other or with ammonium sulfate</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D5/10" definition-exists="false" ipc-concordant="C01D5/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D5/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with sulfates of magnesium, calcium, strontium, or barium</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D5/12" definition-exists="false" ipc-concordant="C01D5/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D5/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of double sulfates of magnesium with sodium or potassium</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D5/14" definition-exists="false" ipc-concordant="C01D5/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D5/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of sulfites </text><reference><text><class-ref scheme="cpc">C01D5/04</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D5/145" definition-exists="false" ipc-concordant="C01D5/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D5/145</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Pyrosulfites or metabisulfites</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D5/16" definition-exists="false" ipc-concordant="C01D5/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D5/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01D5/145</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D5/18" definition-exists="false" ipc-concordant="C01D5/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D5/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Dehydration </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01D5/145</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01D7/00" definition-exists="true" ipc-concordant="C01D7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Carbonates of sodium, potassium or alkali metals in general</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D7/02" definition-exists="false" ipc-concordant="C01D7/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation by double decomposition</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D7/04" definition-exists="false" ipc-concordant="C01D7/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with a fluoride or silico-fluoride </text><reference><text><class-ref scheme="cpc">C01D1/24</class-ref> takes precedence</text></reference></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D7/06" definition-exists="false" ipc-concordant="C01D7/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation via sodium or potassium magnesium carbonate</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D7/07" definition-exists="false" ipc-concordant="C01D7/07" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/07</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation from the hydroxides</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D7/08" definition-exists="false" ipc-concordant="C01D7/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation from or via cyano compounds of sodium or potassium </text><reference><text><class-ref scheme="cpc">C01D1/26</class-ref> takes precedence</text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D7/10" definition-exists="false" ipc-concordant="C01D7/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of bicarbonates from carbonates </text><reference><text>ammonia soda process <class-ref scheme="cpc">C01D7/18</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D7/12" definition-exists="false" ipc-concordant="C01D7/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of carbonates from bicarbonates </text><CPC-specific-text><text>or bicarbonate-containing product</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D7/123" definition-exists="false" ipc-concordant="C01D7/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/123</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by thermal decomposition of solids in the absence of a liquid medium</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D7/126" definition-exists="false" ipc-concordant="C01D7/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/126</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Multi-step processes, e.g. from trona to soda ash</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D7/14" definition-exists="false" ipc-concordant="C01D7/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation of sesquicarbonates</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D7/16" definition-exists="false" ipc-concordant="C01D7/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation from compounds of sodium or potassium with amines and carbon dioxide</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D7/18" definition-exists="false" ipc-concordant="C01D7/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation by the ammonia-soda process </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C01D7/12</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D7/22" definition-exists="false" ipc-concordant="C01D7/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D7/24" definition-exists="false" ipc-concordant="C01D7/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Crystallisation</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D7/26" definition-exists="false" ipc-concordant="C01D7/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by precipitation or adsorption</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D7/28" definition-exists="false" ipc-concordant="C01D7/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with selective solvents</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D7/30" definition-exists="false" ipc-concordant="C01D7/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by oxidation</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D7/32" definition-exists="false" ipc-concordant="C01D7/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by dialysis</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D7/34" definition-exists="false" ipc-concordant="C01D7/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by electrolysis</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D7/35" definition-exists="false" ipc-concordant="C01D7/35" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/35</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Varying the content of water of crystallisation or the specific gravity </text><CPC-specific-text><reference><text>calcination <class-ref scheme="cpc">B01J6/00</class-ref>, <class-ref scheme="cpc">F27B</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D7/37" definition-exists="false" ipc-concordant="C01D7/37" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/37</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Densifying sodium carbonate</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D7/38" definition-exists="false" ipc-concordant="C01D7/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation in the form of granules, pieces or other shaped products</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D7/40" definition-exists="false" ipc-concordant="C01D7/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C01D7/40</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Influencing the crystallisation process</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D7/42" definition-exists="false" ipc-concordant="C01D7/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D7/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preventing the absorption of moisture or caking</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01D9/00" definition-exists="true" ipc-concordant="C01D9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D9/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nitrates of sodium, potassium or alkali metals in general </text><CPC-specific-text><reference><text>preparation as fertilizers or of fertilizers containing them <class-ref scheme="cpc">C05D5/00</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D9/02" definition-exists="false" ipc-concordant="C01D9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D9/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation by working-up natural salt mixtures</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D9/04" definition-exists="false" ipc-concordant="C01D9/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D9/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation with liquid nitric acid</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D9/06" definition-exists="false" ipc-concordant="C01D9/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D9/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation with gaseous nitric acid or nitrogen oxides</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D9/08" definition-exists="false" ipc-concordant="C01D9/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D9/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation by double decomposition</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D9/10" definition-exists="false" ipc-concordant="C01D9/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D9/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with ammonium nitrate</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D9/12" definition-exists="false" ipc-concordant="C01D9/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D9/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with nitrates or magnesium, calcium, strontium, or barium</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D9/14" definition-exists="false" ipc-concordant="C01D9/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D9/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of salts of potassium with sodium nitrate</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D9/16" definition-exists="false" ipc-concordant="C01D9/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D9/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D9/18" definition-exists="false" ipc-concordant="C01D9/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D9/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preparation in the form of shaped products, e.g. granules</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D9/20" definition-exists="false" ipc-concordant="C01D9/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D9/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preventing the absorption of moisture or caking</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01D13/00" definition-exists="true" ipc-concordant="C01D13/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D13/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Compounds of sodium or potassium not provided for elsewhere</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01D15/00" definition-exists="true" ipc-concordant="C01D15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D15/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Lithium compounds</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D15/005" definition-exists="false" ipc-concordant="C01D15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D15/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Lithium hexafluorophosphate</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D15/02" definition-exists="false" ipc-concordant="C01D15/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D15/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Oxides</text></title-part><title-part><text>Hydroxides</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D15/04" definition-exists="false" ipc-concordant="C01D15/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D15/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Halides</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D15/06" definition-exists="false" ipc-concordant="C01D15/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D15/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sulfates</text></title-part><title-part><text>Sulfites</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D15/08" definition-exists="false" ipc-concordant="C01D15/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D15/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Carbonates</text></title-part><title-part><text>Bicarbonates</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D15/10" definition-exists="false" ipc-concordant="C01D15/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D15/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nitrates</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C01D17/00" definition-exists="true" ipc-concordant="C01D17/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D17/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Rubidium, caesium or francium compounds</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C01D17/003" definition-exists="false" ipc-concordant="C01D17/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D17/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Compounds of alkali metals</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C01D17/006" definition-exists="false" ipc-concordant="C01D17/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C01D17/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preparation of potassium compounds comprising precipitating potassium ions by an organic reagent or extracting them by a liquid organic phase</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></classification-item></class-scheme>