C21C   1/00		ŴŴ	Refining of pig-iron; Cast iron	2646
C21C   1/02		æޤæβ	Dephosphorising or desulfurising	6612
C21C   1/04		úǡޤϤʳԽʪν	Removing impurities other than carbon, phosphorus, or sulfur	1414
C21C   1/06		ŴѤκϧι¤Ūħ	Constructional features of mixers for pig-iron	1583
C21C   1/08		Ŵ¤	Manufacture of cast-iron	2215
C21C   1/10		Ŵ¤	Making spheroidal graphite cast-iron	3844
C21C   3/00		ϣŴޤϣݤ¤	Manufacture of wrought-iron or wrought-steel	254
C21C   5/00		úǹݡ㡥ݡúǹݤޤݡ¤	Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel	1807
C21C   5/02		Ĥϧˡ	Crucible furnace processes	59
C21C   5/04		ϧϧݡ㡥󥹥ޥݡ¤	Manufacture of hearth-furnace steel, e.g. Siemens-Martin steel	1088
C21C   5/06		üʬΥ饰Ĥˡ	Processes yielding slags of special composition	146
C21C   5/28		žϧˤݤ¤	Manufacture of steel in the converter	8050
C21C   5/30		ϣĴޤ	Regulating or controlling the blowing	2991
C21C   5/32		夫οϣʣããͥˡΣ	Blowing from above(<b>C21C5/35</b> takes precedence)	2232
C21C   5/34		̤ϣʣããͥˡΣ	Blowing through the bath(<b>C21C5/35</b> takes precedence)	1523
C21C   5/35		夫餪̤ƤοϣΣ	Blowing from above and through the bath	1929
C21C   5/36		üʬΥ饰Ĥˡ	Processes yielding slags of special composition	2612
C21C   5/38		ѥޤʴν	Removal of waste gases or dust	1785
C21C   5/40		žϧѥޤʴνޤʬΥ	Offtakes or separating apparatus for converter waste gases or dust	3543
C21C   5/42		žϧι¤Ūħ	Constructional features of converters	1198
C21C   5/44		Ѳʪ饤˥	Refractory linings	2693
C21C   5/46		¤ޤ°ʪ	Details or accessories	13981
C21C   5/48		žϧϧޤϱ	Bottoms or tuy&egrave;res of converters	2898
C21C   5/50		žϧηư	Tilting mechanisms for converters	870
C21C   5/52		ŵϧˤݤ¤	Manufacture of steel in electric furnaces	9833
C21C   5/54		üʬΥ饰Ĥˡ	Processes yielding slags of special composition	1226
C21C   5/56		¾ˡˤݤ¤ľˡˤϹݤ¤ã£	Manufacture of steel by other methods(making liquid steel by direct processes <b>C21B13/00</b>)	2644
C21C   7/00		롼ףããããޤʤͻŴϹ⡤㡥ݡν¤ͻ°ν£ģ£ģ	Treating molten ferrous alloys, e.g. steel, not covered by groups <b>C21C1/00 to C21C5/00</b> (treating molten metals during moulding <b>B22D1/00</b>, <b>B22D27/00</b>)	20362
C21C   7/04		ޤźäˤԽʪν	Removing impurities by adding a treating agent	4361
C21C   7/06		æ㡥󥰡Σ	Deoxidising, e.g. killing	9943
C21C   7/064		ææβΣ	Dephosphorising; Desulfurising	7736
C21C   7/068		æúΣ	Decarburising	2981
C21C   7/072		ˤʣããããããͥˡΣ	Treatment with gases(<b>C21C7/06</b>, <b>C21C7/064</b>, <b>C21C7/068</b> take precedence)	7291
C21C   7/076		ޤȤƤΥ饰ޤϺޤλѡʣããããããͥˡΣ	Use of slags or fluxes as treating agents(<b>C21C7/06</b>, <b>C21C7/064</b>, <b>C21C7/068</b> take precedence)	4127
C21C   7/10		ˤ	Handling in vacuum	13357
