CPC Subgroup Additional Only
B01D 2323/2182 Organic additives
Full Title
Details relating to membrane preparation > Use of additives > Additive materials > Organic additives
14 direct subcodes
Child Classifications
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- B01D 2323/21821 Alkanes
- B01D 2323/21822 Alkenes
- B01D 2323/21823 Alcohols or hydroxydes, e.g. ethanol, glycerol or phenol
- B01D 2323/21824 Aldehydes
- B01D 2323/21825 Ketones
- B01D 2323/21826 Acids, e.g. acetic acid
- B01D 2323/21827 Salts
- B01D 2323/21829 Acrylates
- B01D 2323/2183 Ethers
- B01D 2323/21833 Esters
- B01D 2323/21834 Amines
- B01D 2323/21837 Amides
- B01D 2323/21838 Imides
- B01D 2323/21839 Polymeric additives
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