H01M 8/00 Fuel cells; Manufacture thereof
Introduced: July 1974
Additional Content IPC
Glossary
fuel cell fuel cells electrochemical generator wherein the reactants are supplied from outside single cell single cells fuel cell entity, containing one single anode, one single electrolyte and one single cathode [see figure: (a), (b)] unit cell unit cells structural component, containing one or more single cells [see figure: (a), (b), (c), (d)] stack stacks group of components, where the components (unit cells) are arranged in vertical direction [see figure: (e), (f), (g), (h)] and/or horizontal direction [see figure: (i), (j)] battery batteries device comprising one or more electrochemical cells redox flow battery redox flow batteries reversible fuel cell in which all electroactive components are dissolved in the electrolyte with a flow circulation system of the electrolyte redox fuel cell, indirect fuel cell redox fuel cell indirect fuel cell redox fuel cells indirect fuel cells fuel cell where the oxidant or fuel is not reacted directly at the electrode but with the reduced/oxidised form of a redox couple and the oxidised/reduced species are fed to cathode/anode
Limiting references
Electrodes for fuel cells
Of 13 combined children, 12 exist in both systems.
1 codes are CPC-only extensions.
3 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1974.
Child Classifications
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- H01M 8/04 Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids since 1974 IPC+CPC Available in IPC and CPC
- H01M 8/06 Combination of fuel cells with means for production of reactants or for treatment of residues (regenerative fuel cells H01M8/18) since 1974 +1 CPC IPC+CPC Available in IPC and CPC
- H01M 8/16 Biochemical fuel cells, i.e. cells in which microorganisms function as catalysts since 1974 IPC+CPC Available in IPC and CPC
- H01M 8/18 Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells since 1974 +2 CPC IPC+CPC Available in IPC and CPC
- H01M 8/20 Indirect fuel cells, e.g. fuel cells with redox couple being irreversible (H01M8/18 takes precedence) since 1974 IPC+CPC Available in IPC and CPC
- H01M 8/22 Fuel cells in which the fuel is based on materials comprising carbon or oxygen or hydrogen and other elements; Fuel cells in which the fuel is based on materials comprising only elements other than carbon, oxygen or hydrogen since 1974 +3 CPC IPC+CPC Available in IPC and CPC
- H01M 8/24 Grouping of fuel cells, e.g. stacking of fuel cells since 1974 +1 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class H01,2013–2023, worldwide · Source: EPO PATSTAT
- TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 43,574
- SAMSUNG ELECTRONICS COMPANY KR 42,206
- LG CHEM KR 21,383
- APPLIED MATERIALS US 20,441
- LG ENERGY SOLUTION KR 20,279
- SAMSUNG DISPLAY KR 19,725
- CHINESE ACADEMY OF SCIENCES 19,400
- TOYOTA MOTOR CORPORATION 18,819
- SGCC(STATE GRID CORPORATION OF CHINA) 18,082
- TOKYO ELECTRON JP 17,634
Top Applicants (CPC)
Class H01,2013–2023, worldwide · Source: EPO PATSTAT
- SAMSUNG ELECTRONICS COMPANY KR 37,897
- TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 36,116
- APPLIED MATERIALS US 21,640
- LG ENERGY SOLUTION KR 20,770
- LG CHEM KR 19,835
- TOKYO ELECTRON JP 18,519
- ROBERT BOSCH DE 14,595
- INTEL CORPORATION US 13,580
- MURATA MANUFACTURING COMPANY JP 12,151
- SAMSUNG SDI COMPANY KR 12,080