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DIFF Subgroup
H01M 4/24

Electrodes for alkaline accumulators

Introduced: July 1974

Full Title

Electrodes > Electrodes composed of, or comprising, active material > Electrodes for alkaline accumulators

CPC subdivides this area 2x more granularly than IPC with 4 additional codes.

4 codes are CPC-only extensions.

IPC defines codes here since 1974.

Child Classifications

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  • H01M 4/242 CPC only CPC only
  • H01M 4/244 CPC only CPC only
  • H01M 4/246 CPC only CPC only
  • H01M 4/248 CPC only CPC only
  • H01M 4/32 Nickel oxide or hydroxide electrodes since 1974 IPC+CPC Available in IPC and CPC
  • H01M 4/34 Silver oxide or hydroxide electrodes since 1974 IPC+CPC Available in IPC and CPC