IPC Main Group
F01B 31/00 Component parts, details or accessories not provided for in, or of interest apart from, other groups
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
11 direct subcodes
Child Classifications
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- F01B 31/02 De-icing means for engines having icing phenomena
- F01B 31/04 Means for equalising torque in reciprocating-piston machines or engines
- F01B 31/06 Means for compensating relative expansion of component parts
- F01B 31/08 Cooling of steam engines; Heating; Heat insulation
- F01B 31/1 Lubricating arrangements of steam engines
- F01B 31/12 Arrangements of measuring or indicating devices
- F01B 31/14 Changing of compression ratio
- F01B 31/16 Silencers specially adapted for steam engines
- F01B 31/18 Draining
- F01B 31/22 Idling devices, e.g. having by-passing valves
- F01B 31/26 Other component parts, details, or accessories, peculiar to steam engines
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