DIFF Subgroup
H01M 8/0662 Treatment of gaseous reactants or gaseous residues, e.g. cleaning
Introduced: January 2016
Full Title
Full titles differ between systems:
IPC:
Fuel cells; Manufacture thereof > Combination of fuel cells with means for production of reactants or for treatment of residues > Treatment of gaseous reactants or gaseous residues, e.g. cleaning
CPC:
Fuel cells; Manufacture thereof > Combination of fuel cells with means for production of reactants or for treatment of residues (regenerative fuel cells H01M8/18) > Treatment of gaseous reactants or gaseous residues, e.g. cleaning
CPC subdivides this area 4x more granularly than IPC with 3 additional codes.
3 codes are CPC-only extensions.
IPC defines codes here since 2016.
Child Classifications
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- H01M 8/0668 Removal of carbon monoxide or carbon dioxide since 2016 IPC+CPC Available in IPC and CPC