H01M 8/00 Fuel cells; Manufacture thereof
Introduced: July 1974
Last revised: January 2016
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
Filing statistics
IPC H01M 8/00 belongs to the parent subclass H01M, which recorded 862,000 patent applications worldwide between 2013 and 2023. Annual filings grew from 44,284 in 2013 to 137,515 in 2023 (+211%). The most active applicants in class H01 are TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY (43,574 applications), SAMSUNG ELECTRONICS COMPANY (42,206 applications) and LG CHEM (21,383 applications).
Source: EPO PATSTAT, worldwide filings
Additional Content
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
Related Keywords
12 direct subcodes
Child Classifications
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- H01M 8/008 Disposal or recycling of fuel cells
- H01M 8/02 Details
- H01M 8/04 Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M 8/06 Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M 8/08 Fuel cells with aqueous electrolytes
- H01M 8/1 Fuel cells with solid electrolytes
- H01M 8/14 Fuel cells with fused electrolytes
- H01M 8/16 Biochemical fuel cells, i.e. cells in which microorganisms function as catalysts
- H01M 8/18 Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
- H01M 8/2 Indirect fuel cells, e.g. fuel cells with redox couple being irreversible
- 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
- H01M 8/24 Grouping of fuel cells, e.g. stacking of fuel cells
Top Applicants
Top 10 applicants by patent filingsfor 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