F01K 23/14 including at least one combustion engine
Introduced: September 1968
Last revised: January 2006
Full Title
Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids > the engines being mechanically coupled > including at least one combustion engine
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- Subclass:
- STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
Filing statistics
IPC F01K 23/14 belongs to the parent subclass F01K, which recorded 33,353 patent applications worldwide between 2013 and 2023. Annual filings declined from 3,012 in 2013 to 2,970 in 2023 (-1%), peaking at 3,203 applications in 2022. The most active applicants in class F01 are GE (GENERAL ELECTRIC COMPANY) (8,496 applications), UNITED TECHNOLOGIES CORPORATION (UTC) (7,291 applications) and SAFRAN AIRCRAFT ENGINES (5,503 applications).
Source: EPO PATSTAT, worldwide filings
Top Applicants
Top 10 applicants by patent filingsfor class F01, 2013–2023, worldwide · Source: EPO PATSTAT
- GE (GENERAL ELECTRIC COMPANY) US 8,496
- UNITED TECHNOLOGIES CORPORATION (UTC) US 7,291
- SAFRAN AIRCRAFT ENGINES FR 5,503
- TOYOTA MOTOR CORPORATION 4,556
- SIEMENS DE 3,992
- HYUNDAI MOTOR COMPANY KR 3,929
- RAYTHEON TECHNOLOGIES CORPORATION US 3,534
- FORD GLOBAL TECHNOLOGIES US 3,407
- TOYOTA MOTOR CORPORATION JP 3,042
- WEICHAI POWER COMPANY 2,888