DIFF Subgroup
C25C 3/26 of titanium, zirconium, hafnium, tantalum or vanadium
Introduced: July 1974
Full Title
Full titles differ between systems:
IPC:
Electrolytic production, recovery or refining of metals by electrolysis of melts > of titanium, zirconium, hafnium, tantalum or vanadium
CPC:
Electrolytic production, recovery or refining of metals by electrolysis of melts (C25C5/00 takes precedence) > of titanium, zirconium, hafnium, tantalum or vanadium
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1974.
Child Classifications
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