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CPC Main Group
B01J 47/00

Ion-exchange processes in general; Apparatus therefor (ion-exchange chromatography processes or apparatus B01D15/08)

10 direct subcodes

Child Classifications

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  • B01J 47/011 using batch processes
  • B01J 47/012 using portable ion-exchange apparatus
  • B01J 47/014 in which the adsorbent properties of the ion-exchanger are involved, e.g. recovery of proteins or other high-molecular compounds
  • B01J 47/015 Electron-exchangers
  • B01J 47/016 Modification or after-treatment of ion-exchangers

Top Applicants

Top 10 applicants by patent filingsfor class B01, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 10,345
  2. CHINESE ACADEMY OF SCIENCES 8,352
  3. BASF (BADISCHE ANILIN & SODA FABRIK) DE 5,134
  4. LG CHEM KR 4,290
  5. SAUDI ARABIAN OIL COMPANY SA 3,444
  6. IFPEN (IFP ENERGIES NOUVELLES) FR 3,417
  7. DOW GLOBAL TECHNOLOGIES US 3,195
  8. MANN + HUMMEL DE 2,822
  9. JOHNSON MATTHEY GB 2,802
  10. UNIVERSAL OIL PRODUCTS COMPANY (UOP) US 2,737