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IPC Subgroup
F28B 9/04

for feeding, collecting, and storing cooling water or other cooling liquid

Introduced: September 1968

Last revised: January 2006

Full Title

Auxiliary systems, arrangements, or devices > for feeding, collecting, and storing cooling water or other cooling liquid

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
HEAT EXCHANGE IN GENERAL
Subclass:
STEAM OR VAPOUR CONDENSERS

1 direct subcode

Child Classifications

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  • F28B 9/06 with provision for re-cooling the cooling water or other cooling liquid

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