F02B57/04 - CPC Classification Index

ClassID:

138848 ⎘

F02B57/04 - CPC Classification

Classification description:

Internal-combustion aspects of rotary engines in which the combusted gases displace one or more reciprocating pistons Control of cylinder-charge admission or exhaust

Recent Application in this class:

20240141825

2024-05-02

HYDROGEN-OXYGEN CYCLE ENGINE AND USING METHOD THEREFOR

20230296037

2023-09-21

ROTATING CYLINDER WITH PORTS FOR AN INTERNAL COMBUSTION ENGINE

20230036422

2023-02-02

INTERNAL COMBUSTION ENGINE WITH ROTATING PISTONS AND CYLINDERS AND RELATED DEVICES AND METHODS OF USING THE SAME

20220397055

2022-12-15

INTERNAL COMBUSTION ENGINE WITH ROTATING PISTONS AND CYLINDERS AND RELATED DEVICES AND METHODS OF USING THE SAME

20210404377

2021-12-30

INTERNAL COMBUSTION ENGINE WITH ROTATING PISTONS AND CYLINDERS AND RELATED DEVICES AND METHODS OF USING THE SAME

20210164388

2021-06-03

Internal combustion engine with rotating pistons and cylinders and related devices and methods of using the same

20180306033

2018-10-25

Four-stroke rotary- piston engine with adjustable compression ratio and adjustable valve control times

20170284283

2017-10-05

Internal combustion engine with port communication

20170159557

2017-06-08

Gas flow and energy conversion apparatus

#10

20160281596

2016-09-29

Circulating piston engine having a rotary valve assembly

#11

20160040588

2016-02-11

Internal combustion engine with port communication

#12

20140261292

2014-09-18

Internal combustion engine with port communication