of elements or alloys

Introduced: July 1974

Full Title

Electrodes > Electrodes composed of, or comprising, active material > Selection of substances as active materials, active masses, active liquids > of elements or alloys

CPC subdivides this area 2x more granularly than IPC with 5 additional codes.

5 codes are CPC-only extensions.

IPC defines codes here since 1974.

Child Classifications

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H01M 4/381 +1 CPC CPC only CPC only
H01M 4/383 +1 CPC CPC only CPC only
H01M 4/386 CPC only CPC only
H01M 4/387 CPC only CPC only
H01M 4/388 CPC only CPC only
H01M 4/40 Alloys based on alkali metals since 1974 +1 CPC IPC+CPC Available in IPC and CPC
H01M 4/42 Alloys based on zinc since 1974 IPC+CPC Available in IPC and CPC
H01M 4/44 Alloys based on cadmium since 1974 IPC+CPC Available in IPC and CPC
H01M 4/46 Alloys based on magnesium or aluminium since 1974 +2 CPC IPC+CPC Available in IPC and CPC