IPC Subgroup
C22B 3/2 Treatment or purification of solutions, e.g. obtained by leaching
Introduced: January 1990
Last revised: January 2006
Full Title
Extraction of metal compounds from ores or concentrates by wet processes > Treatment or purification of solutions, e.g. obtained by leaching
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
4 direct subcodes
Child Classifications
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