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PCE
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DIFF Subgroup
C25B 1/28

Per-compounds

Introduced: July 1974

Full Title

Electrolytic production of inorganic compounds or non-metals > Products > Per-compounds

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

IPC defines codes here since 1974.

Child Classifications

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  • C25B 1/29 Persulfates since 2021 IPC+CPC Available in IPC and CPC
  • C25B 1/30 Peroxides since 1974 IPC+CPC Available in IPC and CPC
  • C25B 1/32 Perborates since 1974 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class C25,2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINESE ACADEMY OF SCIENCES 1,797
  2. EBARA CORPORATION JP 729
  3. CENTRAL SOUTH UNIVERSITY 650
  4. INDUSTRIE DE NORA IT 641
  5. ROBERT BOSCH DE 600
  6. JFE STEEL JP 593
  7. KMUST (KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY) 553
  8. SIEMENS DE 536
  9. CEA (COMMISSARIAT A L'ENERGIE ATOMIQUE) FR 525
  10. JX NIPPON MINING & METALS CORPORATION 499

Top Applicants (CPC)

Class C25,2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINESE ACADEMY OF SCIENCES 1,393
  2. JFE STEEL JP 914
  3. EBARA CORPORATION JP 738
  4. INDUSTRIE DE NORA IT 674
  5. JX NIPPON MINING & METALS CORPORATION JP 652
  6. NIPPON STEEL CORPORATION JP 633
  7. CEA (COMMISSARIAT A L'ENERGIE ATOMIQUE) FR 630
  8. ROBERT BOSCH DE 626
  9. SIEMENS DE 587
  10. ATOTECH DEUTSCHLAND DE 561