F02B 57/04 Control of cylinder-charge admission or exhaust (peculiar to two-stroke engines or to other engines with working-piston-controlled charge admission or exhaust F02B57/06)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Control of cylinder-charge admission or exhaust
CPC: Control of cylinder-charge admission or exhaust (peculiar to two-stroke engines or to other engines with working-piston-controlled charge admission or exhaust F02B57/06)
Full Title
Full titles differ between systems:
Internal-combustion aspects of rotary engines in which the combusted gases displace one or more reciprocating pistons > Control of cylinder-charge admission or exhaust
Internal-combustion aspects of rotary engines in which the combusted gases displace one or more reciprocating pistons > Control of cylinder-charge admission or exhaust (peculiar to two-stroke engines or to other engines with working-piston-controlled charge admission or exhaust F02B57/06)
No child classifications to compare. This is a leaf node in both IPC and CPC.
Top Applicants
Top Applicants (IPC)
Class F02,2013–2023, worldwide · Source: EPO PATSTAT
- TOYOTA MOTOR CORPORATION 8,687
- ROBERT BOSCH DE 8,328
- FORD GLOBAL TECHNOLOGIES US 7,423
- GE (GENERAL ELECTRIC COMPANY) US 5,732
- UNITED TECHNOLOGIES CORPORATION (UTC) US 5,592
- HYUNDAI MOTOR COMPANY KR 4,699
- TOYOTA MOTOR CORPORATION JP 4,541
- DENSO CORPORATION 3,711
- WEICHAI POWER COMPANY 3,486
- SAFRAN AIRCRAFT ENGINES FR 3,249
Top Applicants (CPC)
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