CPC Main Group
B01D 24/00 Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof (B01D27/02 takes precedence)
10 direct subcodes
Child Classifications
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- B01D 24/02 with the filter bed stationary during the filtration
- B01D 24/28 with the filter bed moving during the filtration (with the filter bed fluidised B01D24/36)
- B01D 24/34 with the filtering material and its pervious support moving (tipping buckets, trays or like sections B01D33/327)
- B01D 24/36 with the filter bed fluidised during the filtration (with the filter bed being stationary B01D24/02)
- B01D 24/38 Feed or discharge devices
- B01D 24/46 Regenerating the filtering material in the filter (B01D24/44 takes precedence)
- B01D 24/48 integrally combined with devices for controlling the filtration
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