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CPC Subgroup Additional Only
F02G 2243/30

having their pistons and displacers each in separate cylinders

Full Title

Stirling type engines having closed regenerative thermodynamic cycles with flow controlled by volume changes > having their pistons and displacers each in separate cylinders

6 direct subcodes

Child Classifications

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  • F02G 2243/32 Regenerative displacers having parallel cylinder, e.g. "Lauberau" or "Schwartzkopff" engines
  • F02G 2243/34 Regenerative displacers having their cylinders at right angle, e.g. "Robinson" engines
  • F02G 2243/36 with twin-expansion cylinders, e.g. "Rainbow" engines
  • F02G 2243/38 External regenerators having parallel cylinders, e.g. "Heinrici" engines
  • F02G 2243/40 with free displacers

Top Applicants

Top 10 applicants by patent filingsfor class F02, 2013–2023, worldwide · Source: EPO PATSTAT

  1. ROBERT BOSCH DE 8,801
  2. FORD GLOBAL TECHNOLOGIES US 8,171
  3. GE (GENERAL ELECTRIC COMPANY) US 6,957
  4. HYUNDAI MOTOR COMPANY KR 5,390
  5. UNITED TECHNOLOGIES CORPORATION (UTC) US 5,250
  6. TOYOTA MOTOR CORPORATION JP 5,214
  7. TOYOTA MOTOR CORPORATION 4,149
  8. DENSO CORPORATION JP 3,400
  9. KIA MOTORS CORPORATION KR 3,388
  10. SAFRAN AIRCRAFT ENGINES FR 3,332