IPC Subgroup
C01B 3/001 characterised by the uptaking media; Treatment thereof
Introduced: January 2026
Full Title
Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen > Reversible storage of hydrogen, e.g. by hydrogen getters or electrodes > characterised by the uptaking media; Treatment thereof
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- INORGANIC CHEMISTRY
- Subclass:
- NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
5 direct subcodes
Child Classifications
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- C01B 3/0015 Organic compounds, e.g. liquid organic hydrogen carriers [LOHC] or metalorganic compounds; Solutions thereof
- C01B 3/0018 Inorganic elements or compounds, e.g. oxides, nitrides, borohydrides or zeolites; Solutions thereof
- C01B 3/0073 Slurries; Suspensions
- C01B 3/0078 Composite solid storage media, e.g. mixtures of polymers and metal hydrides, coated solid compounds or structurally heterogeneous solid compounds
- C01B 3/0084 Solid storage media characterised by their shape, e.g. porous compacts or hollow particles
Top Applicants
Top 10 applicants by patent filingsfor class C01, 2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 5,794
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 3,286
- LG CHEM KR 2,689
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 1,669
- CENTRAL SOUTH UNIVERSITY 1,531
- KMUST (KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY) 1,252
- SUMITOMO METAL MINING COMPANY JP 1,073
- ZHEJIANG UNIVERSITY 1,061
- PANASONIC INTELLECTUAL PROPERTY JP 1,058
- PANASONIC INTELLECTUAL PROPERTY 1,038