CPC Main Group
F28D 11/00 Heat-exchange apparatus employing moving conduits
3 direct subcodes
Child Classifications
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- F28D 11/02 the movement being rotary, e.g. performed by a drum or roller (F28D11/08 takes precedence)
- F28D 11/06 the movement being reciprocating or oscillating (F28D11/08 takes precedence)
- F28D 11/08 more than one conduit assembly performing independent movements, e.g. rotary bundle of tubes in a rotary drum
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