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IPC Main Group
F28B 3/00

Condensers in which the steam or vapour comes into direct contact with the cooling medium

Introduced: September 1968

Last revised: January 2006

Classification Context

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

4 direct subcodes

Child Classifications

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  • F28B 3/02 by providing a flowing coating of cooling liquid on the condensing surface
  • F28B 3/04 by injecting cooling liquid into the steam or vapour
  • F28B 3/06 by injecting the steam or vapour into the cooling liquid
  • F28B 3/08 with rotatable members

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