CPC Subgroup
H01M 8/04694 characterised by variables to be controlled
Full Title
Fuel cells; Manufacture thereof > Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids > Processes for controlling fuel cells or fuel cell systems > characterised by variables to be controlled
6 direct subcodes
Child Classifications
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- H01M 8/04701 Temperature
- H01M 8/04746 Pressure; Flow
- H01M 8/04791 Concentration; Density (H01M8/04828 takes precedence)
- H01M 8/04828 Humidity; Water content
- H01M 8/04858 Electric variables
- H01M 8/04955 Shut-off or shut-down of fuel cells