CPC Subgroup Additional Only
B01D 2255/90 Physical characteristics of catalysts
Full Title
Catalysts > Physical characteristics of catalysts
12 direct subcodes
Child Classifications
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- B01D 2255/902 Multilayered catalyst
- B01D 2255/903 Multi-zoned catalysts
- B01D 2255/904 Multiple catalysts
- B01D 2255/905 Catalysts having a gradually changing coating
- B01D 2255/906 Catalyst dispersed in the gas
- B01D 2255/908 O2-storage component incorporated in the catalyst
- B01D 2255/909 H2-storage component incorporated in the catalyst
- B01D 2255/91 NOx-storage component incorporated in the catalyst
- B01D 2255/911 NH3-storage component incorporated in the catalyst
- B01D 2255/912 HC-storage component incorporated in the catalyst
- B01D 2255/915 Catalyst supported on particulate filters
- B01D 2255/92 Dimensions
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