CPC Main Group Additional Only
B01D 2311/00 Details relating to membrane separation process operations and control
15 direct subcodes
Child Classifications
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- B01D 2311/02 Specific process operations before starting the membrane separation process
- B01D 2311/04 Specific process operations in the feed stream; Feed pretreatment
- B01D 2311/06 Specific process operations in the permeate stream
- B01D 2311/08 Specific process operations in the concentrate stream
- B01D 2311/10 Temperature control
- B01D 2311/12 Addition of chemical agents
- B01D 2311/13 Use of sweep gas
- B01D 2311/14 Pressure control
- B01D 2311/16 Flow or flux control
- B01D 2311/18 pH control
- B01D 2311/20 Power consumption
- B01D 2311/22 characterised by a specific duration or time
- B01D 2311/24 Quality control
- B01D 2311/25 Recirculation, recycling or bypass, e.g. recirculation of concentrate into the feed
- B01D 2311/26 Further operations combined with membrane separation processes
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