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PCE
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CPC Subgroup
F01L 5/22

Multiple-valve arrangements (with valves surrounding working cylinder or piston F01L5/08; with reciprocatory and other slide valves F01L5/18; specially for two-stroke engines F01L5/20)

Full Title

Slide valve-gear or valve-arrangements (with pure rotary or oscillatory movement F01L7/00) > Multiple-valve arrangements (with valves surrounding working cylinder or piston F01L5/08; with reciprocatory and other slide valves F01L5/18; specially for two-stroke engines F01L5/20)

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