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DIFF Main Group
F01L 15/00

Valve-gear or valve arrangements, e.g. with reciprocatory slide valves, other than provided for in groups F01L17/00 - F01L29/00 (valve drive or external valve-adjustment during operation, tripping-gear or tripping of valves F01L31/00)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Valve-gear or valve arrangements, e.g. with reciprocatory slide valves, other than provided for in groups

CPC: Valve-gear or valve arrangements, e.g. with reciprocatory slide valves, other than provided for in groups F01L17/00 - F01L29/00 (valve drive or external valve-adjustment during operation, tripping-gear or tripping of valves F01L31/00)

Full Title

Full titles differ between systems:

IPC:

Valve-gear or valve arrangements, e.g. with reciprocatory slide valves, other than provided for in groups

CPC:

Valve-gear or valve arrangements, e.g. with reciprocatory slide valves, other than provided for in groups F01L17/00 - F01L29/00 (valve drive or external valve-adjustment during operation, tripping-gear or tripping of valves F01L31/00)

IPC and CPC are identically structured here. All 7 subcodes exist in both systems.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • F01L 15/08 with cylindrical, sleeve, or part-annularly-shaped valves; Such main valves combined with auxiliary valves IPC+CPC Available in IPC and CPC
  • F01L 15/10 with main slide valve and auxiliary valve dragged thereby IPC+CPC Available in IPC and CPC
  • F01L 15/12 characterised by having means for effecting pressure equilibrium between two different cylinder spaces at idling IPC+CPC Available in IPC and CPC
  • F01L 15/18 Valves arrangements not provided for in preceding subgroups of this main group IPC+CPC Available in IPC and CPC
  • F01L 15/20 Component parts, details, or accessories, not provided for in preceding subgroups of this main group IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

Class F01,2013–2023, worldwide · Source: EPO PATSTAT

  1. GE (GENERAL ELECTRIC COMPANY) US 9,989
  2. UNITED TECHNOLOGIES CORPORATION (UTC) US 8,110
  3. SAFRAN AIRCRAFT ENGINES FR 6,248
  4. HYUNDAI MOTOR COMPANY KR 4,530
  5. SIEMENS DE 4,461
  6. FORD GLOBAL TECHNOLOGIES US 4,029
  7. RAYTHEON TECHNOLOGIES CORPORATION US 3,947
  8. TOYOTA MOTOR CORPORATION JP 3,734
  9. GE (GENERAL ELECTRIC COMPANY) 3,415
  10. SCHAEFFLER TECHNOLOGIES & COMPANY DE 3,063