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DIFF Main Group
C25D 17/00

Constructional parts, or assemblies thereof, of cells for electrolytic coating

Introduced: July 1974

CPC subdivides this area 3x more granularly than IPC with 6 additional codes.

6 codes are CPC-only extensions.

IPC defines codes here since 1974.

Child Classifications

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  • C25D 17/001 CPC only CPC only
  • C25D 17/002 CPC only CPC only
  • C25D 17/004 CPC only CPC only
  • C25D 17/005 CPC only CPC only
  • C25D 17/007 CPC only CPC only
  • C25D 17/008 CPC only CPC only

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