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CPC Main Group
F28F 9/00

Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings

8 direct subcodes

Child Classifications

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  • F28F 9/20 Arrangements of heat reflectors, e.g. separately-insertible reflecting walls
  • F28F 9/24 Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates (F28F1/38 takes precedence; in general F15D)

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