CPC Main Group Additional Only
B01D 2321/00 Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
23 direct subcodes
Child Classifications
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- B01D 2321/02 Forward flushing
- B01D 2321/04 Backflushing
- B01D 2321/06 Use of osmotic pressure, e.g. direct osmosis
- B01D 2321/08 Use of hot water or water vapor
- B01D 2321/10 Use of feed
- B01D 2321/12 Use of permeate
- B01D 2321/14 Use of concentrate
- B01D 2321/16 Use of chemical agents
- B01D 2321/18 Use of gases
- B01D 2321/20 By influencing the flow
- B01D 2321/22 Electrical effects
- B01D 2321/24 Magnetic effects
- B01D 2321/26 By suction
- B01D 2321/28 by soaking or impregnating
- B01D 2321/281 by applying a special coating to the membrane or to any module element
- B01D 2321/282 by spray flush or jet flush
- B01D 2321/30 Mechanical cleaning, e.g. with brushes or scrapers
- B01D 2321/32 By heating or pyrolysis
- B01D 2321/34 by radiation
- B01D 2321/35 with acoustic waves
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