Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids

Introduced: July 1974

Full Title

Fuel cells; Manufacture thereof > Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids

IPC and CPC are identically structured here. All 6 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2016.

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H01M 8/04007 related to heat exchange since 2016 +4 CPC IPC+CPC Available in IPC and CPC
H01M 8/04082 Arrangements for control of reactant parameters, e.g. pressure or concentration since 2016 +2 CPC IPC+CPC Available in IPC and CPC
H01M 8/04223 during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells since 2016 +5 CPC IPC+CPC Available in IPC and CPC
H01M 8/04276 Arrangements for managing the electrolyte stream, e.g. heat exchange since 2016 +1 CPC IPC+CPC Available in IPC and CPC
H01M 8/04291 Arrangements for managing water in solid electrolyte fuel cell systems (H01M8/04119 takes precedence) since 2016 IPC+CPC Available in IPC and CPC
H01M 8/04298 Processes for controlling fuel cells or fuel cell systems since 2016 +1 CPC IPC+CPC Available in IPC and CPC

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

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