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CPC Subgroup
F01L 5/08

Arrangements with several movements or several valves, e.g. one valve inside the other (with part-annularly shaped valves F01L5/12)

Full Title

Slide valve-gear or valve-arrangements (with pure rotary or oscillatory movement F01L7/00) > with cylindrical, sleeve, or part-annularly shaped valves > surrounding working cylinder or piston > Arrangements with several movements or several valves, e.g. one valve inside the other (with part-annularly shaped valves F01L5/12)

1 direct subcode

Child Classifications

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  • F01L 5/10 with reciprocating and other movements of the same valve

Top Applicants

Top 10 applicants by patent filingsfor 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