CPC Main Group
F28G 3/00 Rotary appliances
6 direct subcodes
Child Classifications
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- F28G 3/02 having abrasive tools
- F28G 3/04 having brushes (brushes A46B)
- F28G 3/06 having articulated tools, e.g. assembled in chain manner
- F28G 3/08 having coiled wire tools, i.e. basket type
- F28G 3/10 having scrapers, hammers, or cutters, e.g. rigidly mounted
- F28G 3/16 using jets of fluid for removing debris
Top Applicants
Top 10 applicants by patent filingsfor class F28, 2013–2023, worldwide · Source: EPO PATSTAT
- VALEO SYSTEMES THERMIQUES FR 1,945
- MITSUBISHI ELECTRIC CORPORATION JP 1,518
- MAHLE INTERNATIONAL DE 1,120
- ALFA LAVAL SE 1,085
- HANON SYSTEMS KR 939
- DENSO CORPORATION JP 900
- LG ELECTRONICS KR 861
- HAMILTON SUNDSTRAND US 795
- DAIKIN INDUSTRIES JP 608
- DENSO CORPORATION 537