CPC Main Group
F28F 3/00 Plate-like or laminated elements; Assemblies of plate-like or laminated elements (specially adapted for movement F28F5/00)
4 direct subcodes
Child Classifications
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- F28F 3/02 Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations (F28F3/08 takes precedence)
- F28F 3/08 Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
- F28F 3/12 Elements constructed in the shape of a hollow panel, e.g. with channels
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