DIFF Subgroup
C21C 1/04 Removing impurities other than carbon, phosphorus or sulfur
Introduced: September 1968
Title
Titles differ between systems:
IPC: Removing impurities other than carbon, phosphorus, or sulfur
CPC: Removing impurities other than carbon, phosphorus or sulfur
Full Title
Full titles differ between systems:
IPC:
Refining of pig-iron; Cast iron > Removing impurities other than carbon, phosphorus, or sulfur
CPC:
Refining of pig-iron; Cast iron > Removing impurities other than carbon, phosphorus or sulfur
No child classifications to compare. This is a leaf node in both IPC and CPC.