IPC Subgroup
C01B 3/5 Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
Introduced: January 1980
Last revised: January 2026
Full Title
Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen > Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- INORGANIC CHEMISTRY
- Subclass:
- NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
5 direct subcodes
Child Classifications
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- C01B 3/501 by diffusion
- C01B 3/506 at low temperatures
- C01B 3/508 by using hydrogen storage media
- C01B 3/52 by contacting with liquids; Regeneration of used liquids
- C01B 3/56 by contacting with solids; Regeneration of used solids