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IPC Main Group
F24V 40/00

Production or use of heat resulting from internal friction of moving fluids or from friction between fluids and moving bodies

Introduced: January 2018

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
HEATING; RANGES; VENTILATING
Subclass:
COLLECTION, PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR

Filing statistics

IPC F24V 40/00 belongs to the parent subclass F24V, which recorded 2,265 patent applications worldwide between 2013 and 2023. Annual filings declined from 276 in 2013 to 144 in 2023 (-48%). The most active applicants in class F24 are MIDEA (21,834 applications), GREE ELECTRIC APPLIANCES (21,535 applications) and GUANGDONG MIDEA REFRIGERATION EQUIPMENT COMPANY (20,870 applications).

Source: EPO PATSTAT, worldwide filings

1 direct subcode

Child Classifications

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  • F24V 40/1 the fluid passing through restriction means

Top Applicants

Top 10 applicants by patent filingsfor class F24, 2013–2023, worldwide · Source: EPO PATSTAT

  1. MIDEA 21,834
  2. GREE ELECTRIC APPLIANCES 21,535
  3. GUANGDONG MIDEA REFRIGERATION EQUIPMENT COMPANY 20,870
  4. QINGDAO HAIER AIR CONDITIONER COMPANY 15,443
  5. HAIER SMART HOME 15,442
  6. QINGDAO HAIER AIR CONDITIONER ELECTRIC COMPANY 10,008
  7. AUX AIR CONDITIONING COMPANY 7,723
  8. NINGBO AUX ELECTRIC COMPANY 7,499
  9. NINGBO FOTILE KITCHENWARE COMPANY 6,712
  10. LG ELECTRONICS KR 6,441