CPC Subgroup
C25F 3/18 of light metals
Full Title
Electrolytic etching or polishing > Polishing > of light metals
Filing statistics
CPC C25F 3/18 belongs to the parent subclass C25F, which recorded 6,983 patent applications worldwide between 2013 and 2023. Annual filings grew from 451 in 2013 to 629 in 2023 (+39%), peaking at 773 applications in 2020. The most active applicants in class C25 are CHINESE ACADEMY OF SCIENCES (1,393 applications), JFE STEEL (914 applications) and EBARA CORPORATION (738 applications).
Source: EPO PATSTAT, worldwide filings
1 direct subcode
Child Classifications
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- C25F 3/20 of aluminium
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