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 9/007 Auxiliary supports for elements
- F28F 9/02 Header boxes; End plates
- 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
- VALEO SYSTEMES THERMIQUES FR 1,902
- MITSUBISHI ELECTRIC CORPORATION JP 1,327
- GREE ELECTRIC APPLIANCES 1,152
- MAHLE INTERNATIONAL DE 999
- ALFA LAVAL SE 960
- HANON SYSTEMS KR 917
- DENSO CORPORATION 905
- DENSO CORPORATION JP 802
- CHINESE ACADEMY OF SCIENCES 787
- XIAN THERMAL POWER RESEARCH INSTITUTE COMPANY 762