Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel

Introduced: September 1968

Title

Titles differ between systems:

IPC: Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel

CPC: Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel

Full titles differ between systems:

IPC:

Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel

CPC:

Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel

Of 6 combined children, 5 exist in both systems.

1 codes are CPC-only extensions.

3 shared codes have differing titles between IPC and CPC.

Navigate with arrow keys, Enter to open

C21C 5/005 CPC only CPC only
C21C 5/02 Crucible furnace process IPC+CPC Available in IPC and CPC
C21C 5/04 Manufacture of hearth-furnace steel, e.g. Siemens-Martin steel IPC+CPC Available in IPC and CPC
C21C 5/28 Manufacture of steel in the converter +1 CPC IPC+CPC Available in IPC and CPC
C21C 5/52 Manufacture of steel in electric furnaces (; electric heating per se H05B) +10 CPC IPC+CPC Available in IPC and CPC
C21C 5/56 Manufacture of steel by other methods (making liquid steel by direct processes C21B13/00 ) +2 CPC IPC+CPC Available in IPC and CPC

Class C21,2013–2023, worldwide · Source: EPO PATSTAT

Class C21,2013–2023, worldwide · Source: EPO PATSTAT