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IPC Subgroup
C25D 5/12

at least one layer being of nickel or chromium

Introduced: July 1974

Last revised: January 2006

Full Title

Electroplating characterised by the process; Pretreatment or after-treatment of workpieces > Electroplating with more than one layer of the same or of different metals > at least one layer being of nickel or chromium

Classification Context

Section:
CHEMISTRY; METALLURGY
Class:
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
Subclass:
PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; JOINING WORKPIECES BY ELECTROLYSIS; APPARATUS THEREFOR

1 direct subcode

Child Classifications

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  • C25D 5/14 two or more layers being of nickel or chromium, e.g. duplex or triplex layers

Top Applicants

Top 10 applicants by patent filingsfor 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