B01J 38/12 Treating with free oxygen-containing gas
Full Title
Regeneration or reactivation of catalysts, in general > Gas or vapour treating; Treating by using liquids vaporisable upon contacting spent catalyst > Treating with free oxygen-containing gas
Filing statistics
CPC B01J 38/12 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
8 direct subcodes
Child Classifications
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- B01J 38/14 with control of oxygen content in oxidation gas
- B01J 38/16 Oxidation gas comprising essentially steam and oxygen
- B01J 38/18 with subsequent reactive gas treating
- B01J 38/20 Plural distinct oxidation stages
- B01J 38/22 Moving bed, e.g. vertically or horizontally moving bulk
- B01J 38/30 in gaseous suspension, e.g. fluidised bed
- B01J 38/38 and adding heat by solid heat carrier
- B01J 38/40 and forming useful by-products
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