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Manufacture of hearth-furnace steel, e.g. Siemens-Martin steel {(C21C5/005 takes precedence)}

Manufacture of hearth-furnace steel, e.g. Siemens-Martin steel {(C21C5/005 takes precedence)} · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	C21C5/04
Official title	Manufacture of hearth-furnace steel, e.g. Siemens-Martin steel {(C21C5/005 takes precedence)}
Display label	Manufacture of hearth-furnace steel, e.g. Siemens-Martin steel {(C21C5/005 takes precedence)}
Total patents	8

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is stable.

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.