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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

Top Applicants

Top 10 applicants by patent filingsfor class F01, 2013–2023, worldwide · Source: EPO PATSTAT

  1. GE (GENERAL ELECTRIC COMPANY) US 8,496
  2. UNITED TECHNOLOGIES CORPORATION (UTC) US 7,291
  3. SAFRAN AIRCRAFT ENGINES FR 5,503
  4. TOYOTA MOTOR CORPORATION 4,556
  5. SIEMENS DE 3,992
  6. HYUNDAI MOTOR COMPANY KR 3,929
  7. RAYTHEON TECHNOLOGIES CORPORATION US 3,534
  8. FORD GLOBAL TECHNOLOGIES US 3,407
  9. TOYOTA MOTOR CORPORATION JP 3,042
  10. WEICHAI POWER COMPANY 2,888