IPC Main Group
F01B 25/00 Regulating, controlling or safety means
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- Subclass:
- MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
Filing statistics
IPC F01B 25/00 belongs to the parent subclass F01B, which recorded 5,561 patent applications worldwide between 2013 and 2023. Annual filings declined from 691 in 2013 to 295 in 2023 (-57%). 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
Additional Content
Controlling combustion engines
5 direct subcodes
Child Classifications
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- F01B 25/02 Regulating or controlling by varying working-fluid admission or exhaust, e.g. by varying pressure or quantity
- F01B 25/16 Safety means responsive to specific conditions
- F01B 25/2 Checking operation of safety devices
- F01B 25/22 Braking by redirecting working fluid
- F01B 25/26 Warning devices
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