CPC Subgroup
C01B 3/06 by reaction of inorganic compounds containing electro-positively bound hydrogen with inorganic reducing agents
Full Title
Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen (production of water-gas or synthesis gas from solid carbonaceous material C10J) > Production of hydrogen; Production of gaseous mixtures containing hydrogen > by reaction of inorganic compounds containing electro-positively bound hydrogen with inorganic reducing agents
7 direct subcodes
Child Classifications
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- C01B 3/061 by reaction of water with metal oxides
- C01B 3/065 by reaction of inorganic compounds with hydrides
- C01B 3/08 by reaction of inorganic compounds with metals
- C01B 3/103 the hydrogen being generated from the water as a result of cycles of reactions, e.g. sulfur-iodine cycle
- C01B 3/12 by reaction of water vapour with carbon monoxide
- C01B 3/20 by reaction of metal hydroxides with carbon monoxide
Top Applicants
Top 10 applicants by patent filingsfor class C01, 2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 4,293
- LG CHEM KR 3,317
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 2,219
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 2,154
- OMYA INTERNATIONAL CH 1,524
- PANASONIC INTELLECTUAL PROPERTY JP 1,362
- SAUDI ARABIAN OIL COMPANY SA 1,298
- SUMITOMO METAL MINING COMPANY JP 1,286
- CENTRAL SOUTH UNIVERSITY 1,243
- L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE FR 1,238