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IPC Main Group
F28B 11/00

Controlling arrangements with features specially adapted for condensers

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

Filing statistics

IPC F28B 11/00 belongs to the parent subclass F28B, which recorded 16,074 patent applications worldwide between 2013 and 2023. Annual filings grew from 636 in 2013 to 2,267 in 2023 (+256%), peaking at 2,698 applications in 2020. The most active applicants in class F28 are VALEO SYSTEMES THERMIQUES (1,902 applications), MITSUBISHI ELECTRIC CORPORATION (1,327 applications) and GREE ELECTRIC APPLIANCES (1,152 applications).

Source: EPO PATSTAT, worldwide filings

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