characterised by shape or form

Introduced: July 1974

Full Title

Electrodes > Electrodes composed of, or comprising, active material > Carriers or collectors > characterised by shape or form

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1974.

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H01M 4/72 Grids since 1974 IPC+CPC Available in IPC and CPC
H01M 4/75 Wires, rods or strips since 1974 IPC+CPC Available in IPC and CPC
H01M 4/76 Containers for holding the active material, e.g. tubes, capsules since 1974 +2 CPC IPC+CPC Available in IPC and CPC
H01M 4/78 Shapes other than plane or cylindrical, e.g. helical since 1974 IPC+CPC Available in IPC and CPC
H01M 4/80 Porous plates, e.g. sintered carriers since 1974 +3 CPC IPC+CPC Available in IPC and CPC

Class H01,2013–2023, worldwide · Source: EPO PATSTAT

Class H01,2013–2023, worldwide · Source: EPO PATSTAT