IPC Subgroup
C22B 1/11 Removing sulfur, phosphorus or arsenic, other than by roasting
Introduced: July 1974
Last revised: January 2006
Full Title
Preliminary treatment of ores or scrap > Removing sulfur, phosphorus or arsenic, other than by roasting
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