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CPC Main Group
F28F 13/00

Arrangements for modifying heat-transfer, e.g. increasing, decreasing (F28F1/00 - F28F11/00 take precedence)

9 direct subcodes

Child Classifications

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  • F28F 13/02 by influencing fluid boundary (boundary-layer control in general F15D)
  • F28F 13/04 by preventing the formation of continuous films of condensate on heat-exchange surfaces, e.g. by promoting droplet formation
  • F28F 13/14 by endowing the walls of conduits with zones of different degrees of conduction of heat
  • F28F 13/16 by applying an electrostatic field to the body of the heat-exchange medium

Top Applicants

Top 10 applicants by patent filingsfor class F28, 2013–2023, worldwide · Source: EPO PATSTAT

  1. VALEO SYSTEMES THERMIQUES FR 1,945
  2. MITSUBISHI ELECTRIC CORPORATION JP 1,518
  3. MAHLE INTERNATIONAL DE 1,120
  4. ALFA LAVAL SE 1,085
  5. HANON SYSTEMS KR 939
  6. DENSO CORPORATION JP 900
  7. LG ELECTRONICS KR 861
  8. HAMILTON SUNDSTRAND US 795
  9. DAIKIN INDUSTRIES JP 608
  10. DENSO CORPORATION 537