DIFF Subgroup
C22B 19/34 Obtaining zinc oxide (purifying zinc oxide C01G9/02)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Obtaining zinc oxide
CPC: Obtaining zinc oxide (purifying zinc oxide C01G9/02)
Full Title
Full titles differ between systems:
IPC:
Obtaining zinc or zinc oxide > Obtaining zinc oxide
CPC:
Obtaining zinc or zinc oxide > Obtaining zinc oxide (purifying zinc oxide C01G9/02)
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
Child Classifications
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