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118 lines
60 KiB
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118 lines
60 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="C21C" definition-exists="true" date-revised="2020-05-01" status="published"><classification-symbol>C21C</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL</text></title-part><title-part><text>TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS </text><reference><text>refining metals in general <class-ref scheme="cpc">C22B9/00</class-ref></text></reference></title-part></class-title><notes-and-warnings><note type="warning"><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="C21C1/00" date-revised="2013-01-01" status="published"><classification-symbol>C21C1/00</classification-symbol>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C21C1/00" definition-exists="false" ipc-concordant="C21C1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C1/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Refining of pig-iron</text></title-part><title-part><text>Cast iron</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C21C1/02" definition-exists="true" ipc-concordant="C21C1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C1/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Dephosphorising or desulfurising</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C21C1/025" definition-exists="false" ipc-concordant="C21C1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C1/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Agents used for dephosphorising or desulfurising</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="C21C1/04" definition-exists="true" ipc-concordant="C21C1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C1/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Removing impurities other than carbon, phosphorus or sulfur</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="C21C1/06" definition-exists="true" ipc-concordant="C21C1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C1/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Constructional features of mixers for pig-iron</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="C21C1/08" definition-exists="true" ipc-concordant="C21C1/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C1/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Manufacture of cast-iron</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="C21C1/10" definition-exists="true" ipc-concordant="C21C1/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C1/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Making spheroidal graphite cast-iron</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C21C1/105" definition-exists="false" ipc-concordant="C21C1/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C1/105</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Nodularising additive agents</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="C21C3/00" definition-exists="false" ipc-concordant="C21C3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C3/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Manufacture of wrought-iron or wrought-steel</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="C21C5/00" definition-exists="true" ipc-concordant="C21C5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel </text><CPC-specific-text><text>or stainless steel</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C21C5/005" definition-exists="false" ipc-concordant="C21C5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Manufacture of stainless steel</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="C21C5/02" definition-exists="false" ipc-concordant="C21C5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Crucible furnace process </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C21C5/005</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="C21C5/04" definition-exists="false" ipc-concordant="C21C5/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Manufacture of hearth-furnace steel, e.g. Siemens-Martin steel </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C21C5/005</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="9" additional-only="false" sort-key="C21C5/06" definition-exists="false" ipc-concordant="C21C5/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Processes yielding slags of special composition</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="C21C5/28" definition-exists="true" ipc-concordant="C21C5/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Manufacture of steel in the converter </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C21C5/005</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="9" additional-only="false" sort-key="C21C5/285" definition-exists="false" ipc-concordant="C21C5/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/285</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Plants therefor</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="C21C5/30" definition-exists="true" ipc-concordant="C21C5/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Regulating or controlling the blowing</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C21C5/305" definition-exists="false" ipc-concordant="C21C5/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/305</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Afterburning</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="C21C5/32" definition-exists="true" ipc-concordant="C21C5/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Blowing from above </text><reference><text><class-ref scheme="cpc">C21C5/35</class-ref> takes precedence</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="C21C5/34" definition-exists="true" ipc-concordant="C21C5/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Blowing through the bath </text><reference><text><class-ref scheme="cpc">C21C5/35</class-ref> takes precedence</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="C21C5/35" definition-exists="false" ipc-concordant="C21C5/35" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/35</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Blowing from above and through the bath</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="C21C5/36" definition-exists="false" ipc-concordant="C21C5/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Processes yielding slags of special composition</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C21C5/363" definition-exists="false" ipc-concordant="C21C5/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C2005/363</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Slag cements</text></CPC-specific-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="C21C5/366" definition-exists="false" ipc-concordant="C21C5/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C2005/366</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Foam slags</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="C21C5/38" definition-exists="true" ipc-concordant="C21C5/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Removal of waste gases or dust</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C21C5/40" definition-exists="true" ipc-concordant="C21C5/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Offtakes or separating apparatus for converter waste gases or dust</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="C21C5/42" definition-exists="false" ipc-concordant="C21C5/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Constructional features of converters</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C21C5/44" definition-exists="true" ipc-concordant="C21C5/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Refractory linings</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C21C5/441" definition-exists="false" ipc-concordant="C21C5/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/441</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Equipment used for making or repairing linings</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="C21C5/443" definition-exists="false" ipc-concordant="C21C5/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/443</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Hot fettling; Flame gunning</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="C21C5/445" definition-exists="false" ipc-concordant="C21C5/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/445</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Lining or repairing the taphole</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C21C5/446" definition-exists="false" ipc-concordant="C21C5/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C2005/446</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Dry linings</text></CPC-specific-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="C21C5/448" definition-exists="false" ipc-concordant="C21C5/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C2005/448</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Lining wear indicators</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="C21C5/46" definition-exists="true" ipc-concordant="C21C5/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/46</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Details or accessories</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C21C5/4606" definition-exists="false" ipc-concordant="C21C5/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/4606</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Lances or injectors</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="C21C5/4613" definition-exists="false" ipc-concordant="C21C5/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/4613</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Refractory coated lances; Immersion lances</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="C21C5/462" definition-exists="false" ipc-concordant="C21C5/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/462</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Means for handling, e.g. adjusting, changing, coupling</text></CPC-specific-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="C21C5/4626" definition-exists="false" ipc-concordant="C21C5/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C2005/4626</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Means for cooling, e.g. by gases, fluids or 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="11" additional-only="false" sort-key="C21C5/4633" definition-exists="false" ipc-concordant="C21C5/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/4633</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Supporting means</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="C21C5/464" definition-exists="false" ipc-concordant="C21C5/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/464</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Trunnion bearings</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="C21C5/4646" definition-exists="false" ipc-concordant="C21C5/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/4646</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Cooling arrangements</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="C21C5/4653" definition-exists="false" ipc-concordant="C21C5/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/4653</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Tapholes; Opening or plugging 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="C21C5/466" definition-exists="false" ipc-concordant="C21C5/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/466</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Charging device for converters</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C21C5/4666" definition-exists="false" ipc-concordant="C21C5/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C2005/4666</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for charging with organic contaminated scrap</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="C21C5/4673" definition-exists="false" ipc-concordant="C21C5/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/4673</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Measuring and sampling devices</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C21C5/468" definition-exists="false" ipc-concordant="C21C5/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C2005/468</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Means for determining the weight of the converter</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="C21C5/4686" definition-exists="false" ipc-concordant="C21C5/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/4686</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Vehicles for supporting and transporting a converter vessel</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="C21C5/4693" definition-exists="false" ipc-concordant="C21C5/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/4693</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Skull removal; Cleaning of the converter mouth</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="C21C5/48" definition-exists="true" ipc-concordant="C21C5/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/48</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Bottoms or tuyéres of converters</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="C21C5/50" definition-exists="true" ipc-concordant="C21C5/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Tilting mechanisms for converters</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="C21C5/52" definition-exists="true" ipc-concordant="C21C5/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/52</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Manufacture of steel in electric furnaces </text><reference><CPC-specific-text><text><class-ref scheme="cpc">C21C5/005</class-ref> takes precedence</text></CPC-specific-text><text>; electric heating <u>per se</u> <class-ref scheme="cpc">H05B</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="C21C5/5205" definition-exists="false" ipc-concordant="C21C5/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/5205</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in a plasma heated furnace</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="C21C5/5211" definition-exists="false" ipc-concordant="C21C5/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/5211</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in an alternating current [AC] electric arc furnace</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="C21C5/5217" definition-exists="false" ipc-concordant="C21C5/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/5217</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>equipped with burners or devices for injecting gas, i.e. oxygen, or pulverulent materials into the furnace</text></CPC-specific-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="C21C5/5223" definition-exists="false" ipc-concordant="C21C5/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C2005/5223</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with post-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="9" additional-only="false" sort-key="C21C5/5229" definition-exists="false" ipc-concordant="C21C5/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/5229</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in a direct current [DC] electric arc furnace</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C21C5/5235" definition-exists="false" ipc-concordant="C21C5/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C2005/5235</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with bottom electrodes</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="C21C5/5241" definition-exists="false" ipc-concordant="C21C5/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/5241</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in an inductively heated furnace</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="C21C5/5247" definition-exists="false" ipc-concordant="C21C5/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/5247</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>processing a moving metal stream while exposed to an electromagnetic field, e.g. in an electromagnetic counter current channel</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="C21C5/5252" definition-exists="false" ipc-concordant="C21C5/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/5252</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in an electrically heated multi-chamber furnace, a combination of electric furnaces or an electric furnace arranged for associated working with a non electric furnace</text></CPC-specific-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="C21C5/5258" definition-exists="false" ipc-concordant="C21C5/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C2005/5258</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with crater formed by down-melting of scrap or charge through electrode or lance</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="C21C5/5264" definition-exists="false" ipc-concordant="C21C5/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/5264</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Manufacture of alloyed steels including ferro-alloys</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="C21C5/527" definition-exists="false" ipc-concordant="C21C5/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/527</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Charging of the electric furnace</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C21C5/5276" definition-exists="false" ipc-concordant="C21C5/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C2005/5276</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with liquid or solid rest, e.g. pool, "sumpf"</text></CPC-specific-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="C21C5/5282" definition-exists="false" ipc-concordant="C21C5/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C2005/5282</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with organic contaminated scrap</text></CPC-specific-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="C21C5/5288" definition-exists="false" ipc-concordant="C21C5/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C2005/5288</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Measuring or sampling devices</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="C21C5/5294" definition-exists="false" ipc-concordant="C21C5/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/5294</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>General arrangement or layout of the electric melt shop</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="C21C5/54" definition-exists="false" ipc-concordant="C21C5/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/54</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Processes yielding slags of special composition</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="C21C5/56" definition-exists="true" ipc-concordant="C21C5/56" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/56</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Manufacture of steel by other methods </text><reference><text>making liquid steel by direct processes <class-ref scheme="cpc">C21B13/00</class-ref> </text><CPC-specific-text><text>; <class-ref scheme="cpc">C21C5/005</class-ref> takes precedence</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="C21C5/562" definition-exists="false" ipc-concordant="C21C5/56" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/562</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>starting from scrap</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="C21C5/565" definition-exists="false" ipc-concordant="C21C5/56" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/565</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preheating of scrap </text><reference><text>apparatus for preheating scrap in general <class-ref scheme="cpc">F27D13/002</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="C21C5/567" definition-exists="false" ipc-concordant="C21C5/56" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C5/567</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>operating in a continuous way</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="C21C7/00" definition-exists="true" ipc-concordant="C21C7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C21C7/00</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Treating molten ferrous alloys, e.g. steel, not covered by groups <class-ref scheme="cpc">C21C1/00</class-ref> - <class-ref scheme="cpc">C21C5/00</class-ref> </text><reference><text>treating molten metals during moulding <class-ref scheme="cpc">B22D1/00</class-ref>, <class-ref scheme="cpc">B22D27/00</class-ref>; remelting ferrous metals <class-ref scheme="cpc">C22B</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="C21C7/0006" definition-exists="false" ipc-concordant="C21C7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C7/0006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Adding metallic additives</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C21C7/0012" definition-exists="false" ipc-concordant="C21C7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C2007/0012</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Lead</text></CPC-specific-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="C21C7/0018" definition-exists="false" ipc-concordant="C21C7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C2007/0018</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></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C21C7/0025" definition-exists="false" ipc-concordant="C21C7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C7/0025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Adding carbon material</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C21C7/0031" definition-exists="false" ipc-concordant="C21C7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C2007/0031</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>being plastics, organic compounds, polymers</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="C21C7/0037" definition-exists="false" ipc-concordant="C21C7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C7/0037</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by injecting powdered material</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="C21C7/0043" definition-exists="false" ipc-concordant="C21C7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C7/0043</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>into the falling stream of molten 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="C21C7/005" definition-exists="false" ipc-concordant="C21C7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C7/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using exothermic reaction compositions</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="C21C7/0056" definition-exists="false" ipc-concordant="C21C7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C7/0056</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using cored wires</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C21C7/0062" definition-exists="false" ipc-concordant="C21C7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C2007/0062</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with introduction of alloying or treating agents under a compacted form different from a wire, e.g. briquette, pellet</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="C21C7/0068" definition-exists="false" ipc-concordant="C21C7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C7/0068</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by introducing material into a current of streaming metal</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="C21C7/0075" definition-exists="false" ipc-concordant="C21C7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C7/0075</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle</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="C21C7/0081" definition-exists="false" ipc-concordant="C21C7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C7/0081</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Treating and handling under pressure</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="C21C7/0087" definition-exists="false" ipc-concordant="C21C7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C7/0087</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Treatment of slags covering the steel bath, e.g. for separating slag from the molten metal</text></CPC-specific-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="C21C7/0093" definition-exists="false" ipc-concordant="C21C7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C2007/0093</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Duplex process; Two stage processes</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="C21C7/04" definition-exists="true" ipc-concordant="C21C7/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C7/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Removing impurities by adding a treating agent</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C21C7/06" definition-exists="false" ipc-concordant="C21C7/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C7/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Deoxidising, e.g. killing</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="C21C7/064" definition-exists="true" ipc-concordant="C21C7/064" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C7/064</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Dephosphorising</text></title-part><title-part><text>Desulfurising</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C21C7/0645" definition-exists="false" ipc-concordant="C21C7/064" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C7/0645</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Agents used for dephosphorising or desulfurising</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="C21C7/068" definition-exists="true" ipc-concordant="C21C7/068" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C7/068</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Decarburising</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C21C7/0685" definition-exists="false" ipc-concordant="C21C7/068" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C7/0685</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of stainless steel</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="C21C7/072" definition-exists="true" ipc-concordant="C21C7/072" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C7/072</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Treatment with gases </text><reference><text><class-ref scheme="cpc">C21C7/06</class-ref>, <class-ref scheme="cpc">C21C7/064</class-ref>, <class-ref scheme="cpc">C21C7/068</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="C21C7/076" definition-exists="true" ipc-concordant="C21C7/076" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C7/076</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Use of slags or fluxes as treating agents </text><reference><text><class-ref scheme="cpc">C21C7/06</class-ref>, <class-ref scheme="cpc">C21C7/064</class-ref>, <class-ref scheme="cpc">C21C7/068</class-ref> take precedence</text></reference></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="C21C7/10" definition-exists="true" ipc-concordant="C21C7/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C21C7/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Handling in a vacuum</text></title-part></class-title></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="C21C100/00" date-revised="2013-01-01" status="published"><classification-symbol>C21C2100/00</classification-symbol>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="C21C100/00" 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>C21C2100/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Exhaust gas</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C21C100/02" 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>C21C2100/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Treatment of the exhaust 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="C21C100/04" 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>C21C2100/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Recirculation of the exhaust 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="C21C100/06" 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>C21C2100/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Energy from waste gas used in other processes</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="C21C200/00" 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>C21C2200/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Recycling of waste material</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="C21C250/00" 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>C21C2250/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Specific additives</text></title-part><title-part><text>Means for adding material different from burners or lances</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C21C250/02" 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>C21C2250/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hot oxygen</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="C21C250/04" 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>C21C2250/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Liquid 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="C21C250/042" 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>C21C2250/042</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Liquid oxygen</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="C21C250/06" 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>C21C2250/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hollow electrode</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="C21C250/08" 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>C21C2250/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Porous plug</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="C21C300/00" 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>C21C2300/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Process aspects</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C21C300/02" 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>C21C2300/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Foam creation</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="C21C300/04" 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>C21C2300/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Avoiding foam formation</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="C21C300/06" 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>C21C2300/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Modeling of the process, e.g. for control purposes</text></title-part><title-part><text>CII</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="C21C300/08" 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>C21C2300/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Particular sequence of the process steps</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></class-scheme> |