H01M 4/8878 — IPC vs CPC Diff | Patent Classification Explorer

DIFF Subgroup

H01M 4/8878

Full Title

Electrodes > Inert electrodes with catalytic activity, e.g. for fuel cells > Processes of manufacture

Of 3 combined children, 0 exist in both systems.

3 codes are CPC-only extensions.

This code exists only in CPC.

Diff view requires codes present in both systems.