IPC Subgroup
C25B 13/04 characterised by the material
Introduced: July 1974
Last revised: January 2021
Full Title
Diaphragms; Spacing elements > characterised by the material
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- Subclass:
- ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR
2 direct subcodes
Child Classifications
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- C25B 13/05 based on inorganic materials
- C25B 13/08 based on organic materials