C25D PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
Introduced: July 1974
Description
C25D covers electroplating, electroless plating, and electrophoretic deposition processes used to apply protective or decorative metallic and non-metallic coatings onto substrates. It also encompasses electroforming techniques for creating metal parts by electrodeposition and electrolytic joining methods for assembling workpieces. This subclass includes apparatus designs, process parameters, and electrolyte formulations specific to these coating and forming operations, distinguishing it from general electrochemical processes (C25A) and electrorefining or electrowinning operations (C25C).
Title
Titles differ between systems:
IPC: PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; JOINING WORKPIECES BY ELECTROLYSIS; APPARATUS THEREFOR
CPC: PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
Full Title
Full titles differ between systems:
PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; JOINING WORKPIECES BY ELECTROLYSIS; APPARATUS THEREFOR
PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
Additional Content IPC
Limiting references
Laminating metals Treatment of water, waste water, or sewage by electrochemical means, e.g. electrolysis Inhibition of corrosion by anodic or cathodic protection Compositions for electrophoretic coating, e.g. electrografting Single crystal growth
Application references
Metallising textiles Decorating textiles by locally metallising Manufacturing printed circuits by metal deposition
Of 12 combined children, 10 exist in both systems.
2 codes 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 11/00 Electrolytic coating by surface reaction, i.e. forming conversion layers since 1974 +1 CPC IPC+CPC Available in IPC and CPC
- C25D 13/00 Electrophoretic coating characterised by the process (C25D15/00 takes precedence; compositions for electrophoretic coating C09D5/44) since 1974 IPC+CPC Available in IPC and CPC
- C25D 15/00 Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires since 1974 IPC+CPC Available in IPC and CPC
- C25D 17/00 Constructional parts, or assemblies thereof, of cells for electrolytic coating since 1974 +6 CPC IPC+CPC Available in IPC and CPC
- C25D 21/00 Processes for servicing or operating cells for electrolytic coating since 1974 IPC+CPC Available in IPC and CPC
- C25D 5/00 Electroplating characterised by the process; Pretreatment or after-treatment of workpieces since 1974 +6 CPC −1 IPC IPC+CPC Available in IPC and CPC
- C25D 7/00 Electroplating characterised by the article coated since 1974 +5 CPC IPC+CPC Available in IPC and CPC
- C25D 9/00 Electrolytic coating other than with metals (C25D11/00, C25D15/00 take precedence; electrophoretic coating C25D13/00) 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