IPC Subgroup
C22B 19/34 Obtaining zinc oxide
Introduced: September 1968
Last revised: January 2006
Full Title
Obtaining zinc or zinc oxide > Obtaining zinc oxide
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- Subclass:
- PRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
2 direct subcodes
Child Classifications
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- C22B 19/36 in blast or reverberatory furnaces
- C22B 19/38 in rotary furnaces