Description
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL (refining or remelting metals in general C22B 9/00); TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
C21C
Technology
Stats
- 924 US PATENTS IN FORCE
- 335 US APPLICATIONS PENDING
- 1,064 Total Patent Owners
- 5,312 TOTAL INVENTORS
Subclasses
| Subclass | Title |
|---|---|
| 1/00 | Refining of pig-iron; Cast iron |
| 1/02 | Refining of pig-iron; Cast iron Dephosphorising or desulfurising |
| 1/04 | Refining of pig-iron; Cast iron Removing impurities other than carbon, phosphorus, or sulfur |
| 1/06 | Refining of pig-iron; Cast iron Constructional features of mixers for pig-iron |
| 1/08 | Refining of pig-iron; Cast iron Manufacture of cast-iron |
| 1/10 | Refining of pig-iron; Cast iron Making spheroidal graphite cast-iron |
| 3/00 | Manufacture of wrought-iron or wrought-steel |
| 5/00 | Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel |
| 5/02 | Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel Crucible furnace processes |
| 5/04 | Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel Manufacture of hearth-furnace steel, e.g. Siemens-Martin steel |
| 5/06 | Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel Manufacture of hearth-furnace steel, e.g. Siemens-Martin steel Processes yielding slags of special composition |
| 5/28 | Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel Manufacture of steel in the converter |
| 5/30 | Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel Manufacture of steel in the converter Regulating or controlling the blowing |
| 5/32 | Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel Manufacture of steel in the converter Regulating or controlling the blowing Blowing from above (C21C 5/35 takes precedence) |
| 5/34 | Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel Manufacture of steel in the converter Regulating or controlling the blowing Blowing through the bath (C21C 5/35 takes precedence) |
| 5/35 | Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel Manufacture of steel in the converter Regulating or controlling the blowing Blowing from above and through the bath |
| 5/36 | Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel Manufacture of steel in the converter Processes yielding slags of special composition |
| 5/38 | Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel Manufacture of steel in the converter Removal of waste gases or dust |
| 5/40 | Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel Manufacture of steel in the converter Removal of waste gases or dust Offtakes or separating apparatus for converter waste gases or dust |
| 5/42 | Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel Manufacture of steel in the converter Constructional features of converters |
Recent Patents
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Recent Publications
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Top Owners in This Class
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Applications Filed in This Class - By Year
Patents Issued To Date - By Filing Year
Average Time to Issuance
- 39 Months (last 2 years Issuances)
- 39 Months (last 5 years Issuances)