CPC Main Group
B01D 27/00 Cartridge filters of the throw-away type
6 direct subcodes
Child Classifications
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- B01D 27/02 with cartridges made from a mass of loose material
- B01D 27/04 with cartridges made of a piece of unitary material, e.g. filter paper
- B01D 27/08 Construction of the casing
- B01D 27/10 Safety devices, e.g. by-passes
- B01D 27/14 having more than one filtering element
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