IPC Subgroup
B01J 19/14 Production of inert gas mixtures; Use of inert gases in general
Introduced: January 1980
Last revised: January 2006
Full Title
Chemical, physical or physico-chemical processes in general; Their relevant apparatus > Production of inert gas mixtures; Use of inert gases in general
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- Subclass:
- CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS