CPC Main Group Additional Only
F02G 2250/00 Special cycles or special engines
10 direct subcodes
Child Classifications
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- F02G 2250/03 Brayton cycles
- F02G 2250/06 Beau de Rochas constant volume cycles
- F02G 2250/09 Carnot cycles in general
- F02G 2250/12 Malone liquid thermal cycles
- F02G 2250/15 Sabathe mixed air cycles
- F02G 2250/18 Vuilleumier cycles
- F02G 2250/21 Cooke Yarborough engines
- F02G 2250/24 Ringbom engines, the displacement of the free displacer being obtained by expansion of the heated gas and the weight of the piston
- F02G 2250/27 Martini Stirling engines
- F02G 2250/31 Nano- or microengines
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