DIFF Subgroup
C21C 5/56 Manufacture of steel by other methods (making liquid steel by direct processes C21B13/00 )
Introduced: September 1968
Title
Titles differ between systems:
IPC: Manufacture of steel by other methods
CPC: Manufacture of steel by other methods (making liquid steel by direct processes C21B13/00 )
Full Title
Full titles differ between systems:
IPC:
Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel > Manufacture of steel by other methods
CPC:
Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel > Manufacture of steel by other methods (making liquid steel by direct processes C21B13/00 )
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Child Classifications
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