CPC Subgroup
C25D 11/04 of aluminium or alloys based thereon
Full Title
Electrolytic coating by surface reaction, i.e. forming conversion layers > Anodisation > of aluminium or alloys based thereon
6 direct subcodes
Child Classifications
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- C25D 11/06 characterised by the electrolytes used
- C25D 11/12 Anodising more than once, e.g. in different baths
- C25D 11/14 Producing integrally coloured layers
- C25D 11/16 Pretreatment
- C25D 11/18 After-treatment, e.g. pore-sealing
Top Applicants
Top 10 applicants by patent filingsfor 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