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DIFF Subgroup
B01J 39/08

Use of material as cation exchangers; Treatment of material for improving the cation exchange properties

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Cation exchange; Use of material as cation exchangers; Treatment of material for improving the cation exchange properties > Use of material as cation exchangers; Treatment of material for improving the cation exchange properties

CPC:

Cation exchange; Use of material as cation exchangers; Treatment of material for improving the cation exchange properties (ion-exchange chromatography processes B01D15/36) > Use of material as cation exchangers; Treatment of material for improving the cation exchange properties

IPC and CPC are identically structured here. All 6 subcodes exist in both systems.

IPC defines codes here since 1980.

Child Classifications

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  • B01J 39/09 Inorganic material since 2017 IPC+CPC Available in IPC and CPC
  • B01J 39/10 Oxides or hydroxides since 1980 IPC+CPC Available in IPC and CPC
  • B01J 39/12 Compounds containing phosphorus since 1980 IPC+CPC Available in IPC and CPC
  • B01J 39/14 Base exchange silicates, e.g. zeolites since 1980 IPC+CPC Available in IPC and CPC
  • B01J 39/24 Carbon, coal or tar since 1980 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class B01,2013–2023, worldwide · Source: EPO PATSTAT

  1. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 16,893
  2. CHINESE ACADEMY OF SCIENCES 11,733
  3. BASF (BADISCHE ANILIN & SODA FABRIK) DE 3,898
  4. LG CHEM KR 3,367
  5. PETROCHINA COMPANY 3,224
  6. IFPEN (IFP ENERGIES NOUVELLES) FR 3,042
  7. ZHEJIANG UNIVERSITY 2,890
  8. MANN + HUMMEL DE 2,740
  9. JOHNSON MATTHEY GB 2,534
  10. SAUDI ARABIAN OIL COMPANY SA 2,527

Top Applicants (CPC)

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