DIFF Main Group
C25D 5/00 Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
Introduced: July 1974
Of 18 combined children, 11 exist in both systems.
6 codes are CPC-only extensions, 1 exist only in IPC.
3 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1974.
Child Classifications
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- C25D 5/02 Electroplating of selected surface areas since 1974 +4 CPC IPC+CPC Available in IPC and CPC
- C25D 5/08 Electroplating with moving electrolyte e.g. jet electroplating since 1974 IPC+CPC Available in IPC and CPC
- C25D 5/10 Electroplating with more than one layer of the same or of different metals (for bearings C25D7/10) since 1974 IPC+CPC Available in IPC and CPC
- C25D 5/16 Electroplating with layers of varying thickness since 1974 IPC+CPC Available in IPC and CPC
- C25D 5/18 Electroplating using modulated, pulsed or reversing current since 1974 IPC+CPC Available in IPC and CPC
- C25D 5/22 Electroplating combined with mechanical treatment during the deposition since 1974 IPC+CPC Available in IPC and CPC
- C25D 5/24 Electroplating of metal surfaces to which a coating cannot readily be applied since 1974 −4 IPC IPC only IPC only
- C25D 5/34 Pretreatment of metallic surfaces to be electroplated since 1974 IPC+CPC Available in IPC and CPC
- C25D 5/54 Electroplating of non-metallic surfaces (C25D7/12 takes precedence) since 1974 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class C25,2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 1,797
- EBARA CORPORATION JP 729
- CENTRAL SOUTH UNIVERSITY 650
- INDUSTRIE DE NORA IT 641
- ROBERT BOSCH DE 600
- JFE STEEL JP 593
- KMUST (KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY) 553
- SIEMENS DE 536
- CEA (COMMISSARIAT A L'ENERGIE ATOMIQUE) FR 525
- JX NIPPON MINING & METALS CORPORATION 499
Top Applicants (CPC)
Class C25,2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 1,393
- JFE STEEL JP 914
- EBARA CORPORATION JP 738
- INDUSTRIE DE NORA IT 674
- JX NIPPON MINING & METALS CORPORATION JP 652
- NIPPON STEEL CORPORATION JP 633
- CEA (COMMISSARIAT A L'ENERGIE ATOMIQUE) FR 630
- ROBERT BOSCH DE 626
- SIEMENS DE 587
- ATOTECH DEUTSCHLAND DE 561