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PCE
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DIFF Subgroup
F01L 15/04

main valve being combined with auxiliary valve (of drag valve type F01L15/10)

Introduced: September 1968

Title

Titles differ between systems:

IPC: main valve being combined with auxiliary valve

CPC: main valve being combined with auxiliary valve (of drag valve type F01L15/10)

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 > with valves other than cylindrical, sleeve, or part-annularly-shaped, e.g. flat D-valves > main valve being combined with auxiliary valve

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) > with valves other than cylindrical, sleeve, or part-annularly-shaped, e.g. flat D-valves > main valve being combined with auxiliary valve (of drag valve type F01L15/10)

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

Child Classifications

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  • F01L 15/06 of Meyer or Rider type, i.e. in which the expansion is varied at the expansion valve itself 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