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IPC Main Group
F28F 9/00

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

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
HEAT EXCHANGE IN GENERAL
Subclass:
DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION

6 direct subcodes

Child Classifications

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  • F28F 9/2 Arrangements of heat reflectors, e.g. separately-insertible reflecting walls
  • F28F 9/22 Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
  • F28F 9/24 Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
  • F28F 9/26 Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators

Top Applicants

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

  1. VALEO SYSTEMES THERMIQUES FR 1,902
  2. MITSUBISHI ELECTRIC CORPORATION JP 1,327
  3. GREE ELECTRIC APPLIANCES 1,152
  4. MAHLE INTERNATIONAL DE 999
  5. ALFA LAVAL SE 960
  6. HANON SYSTEMS KR 917
  7. DENSO CORPORATION 905
  8. DENSO CORPORATION JP 802
  9. CHINESE ACADEMY OF SCIENCES 787
  10. XIAN THERMAL POWER RESEARCH INSTITUTE COMPANY 762