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
- F02G 2243/50 having resonance tubes
Top Applicants
Top 10 applicants by patent filingsfor class F02, 2013–2023, worldwide · Source: EPO PATSTAT
- ROBERT BOSCH DE 8,801
- FORD GLOBAL TECHNOLOGIES US 8,171
- GE (GENERAL ELECTRIC COMPANY) US 6,957
- HYUNDAI MOTOR COMPANY KR 5,390
- UNITED TECHNOLOGIES CORPORATION (UTC) US 5,250
- TOYOTA MOTOR CORPORATION JP 5,214
- TOYOTA MOTOR CORPORATION 4,149
- DENSO CORPORATION JP 3,400
- KIA MOTORS CORPORATION KR 3,388
- SAFRAN AIRCRAFT ENGINES FR 3,332