B01J 2531/90 Catalytic systems characterized by the solvent or solvent system used
Full Title
Additional information regarding catalytic systems classified in B01J31/00 > Catalytic systems characterized by the solvent or solvent system used
Filing statistics
CPC B01J 2531/90 belongs to the parent subclass B01J, which recorded 375,224 patent applications worldwide between 2013 and 2023. Annual filings grew from 21,358 in 2013 to 35,413 in 2023 (+66%), peaking at 40,354 applications in 2020. The most active applicants in class B01 are SINOPEC (CHINA PETROCHEMICAL CORPORATION) (10,345 applications), CHINESE ACADEMY OF SCIENCES (8,352 applications) and BASF (BADISCHE ANILIN & SODA FABRIK) (5,134 applications).
Source: EPO PATSTAT, worldwide filings
4 direct subcodes
Child Classifications
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- B01J 2531/92 Supercritical solvents
- B01J 2531/94 Fluorinated solvents
- B01J 2531/96 Water
- B01J 2531/98 Phase-transfer catalysis in a mixed solvent system containing at least 2 immiscible solvents or solvent phases
Top Applicants
Top 10 applicants by patent filingsfor class B01, 2013–2023, worldwide · Source: EPO PATSTAT
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 10,345
- CHINESE ACADEMY OF SCIENCES 8,352
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 5,134
- LG CHEM KR 4,290
- SAUDI ARABIAN OIL COMPANY SA 3,444
- IFPEN (IFP ENERGIES NOUVELLES) FR 3,417
- DOW GLOBAL TECHNOLOGIES US 3,195
- MANN + HUMMEL DE 2,822
- JOHNSON MATTHEY GB 2,802
- UNIVERSAL OIL PRODUCTS COMPANY (UOP) US 2,737