Inventor
SUMIYOSHI MASAHARU
53 patents
⚠️ This page may combine multiple inventors who share the name “SUMIYOSHI MASAHARU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON SOKEN
19 patentsUS4230072AOct 28, 1980
Internal combustion engine with a methanol reforming system
NIPPON SOKEN92 citations96
US4106448AAug 15, 1978
Internal combustion engine and method of operation
NIPPON SOKEN50 citations93
US3982504ASep 28, 1976
Internal combustion engine
NIPPON SOKEN36 citations93
US4175523ANov 27, 1979
Internal combustion engine and a method for operation thereof
NIPPON SOKEN24 citations82
US4086885AMay 2, 1978
Carburetor for stratified internal combustion engine
NIPPON SOKEN29 citations82
US4034733AJul 12, 1977
Internal combustion engine
NIPPON SOKEN23 citations82
US3955538AMay 11, 1976
Fuel reforming system for an internal combustion engine
NIPPON SOKEN24 citations82
US4143627AMar 13, 1979
Internal combustion engine
NIPPON SOKEN11 citations74
US4128081ADec 5, 1978
Torch ignition type internal combustion engine
NIPPON SOKEN16 citations74
US4127095ANov 28, 1978
Torch-ignition internal combustion engine
NIPPON SOKEN16 citations74
US4095565AJun 20, 1978
Method of operating an internal combustion engine
NIPPON SOKEN16 citations74
US4089310AMay 16, 1978
Internal combustion engine providing improved exhaust-gas purification
NIPPON SOKEN19 citations74
US4085713AApr 25, 1978
Torch ignition internal combustion engine
NIPPON SOKEN13 citations74
US4077363AMar 7, 1978
Internal combustion engine
NIPPON SOKEN9 citations74
US4066043AJan 3, 1978
Fuel reforming system for an internal combustion engine
NIPPON SOKEN14 citations74
US4034720AJul 12, 1977
Internal combustion engine
NIPPON SOKEN11 citations74
US3974818AAug 17, 1976
Internal combustion engine
NIPPON SOKEN18 citations74
US4084551AApr 18, 1978
Internal combustion engine
NIPPON SOKEN4 citations63
US4020817AMay 3, 1977
Internal combustion engine
NIPPON SOKEN5 citations63
TOYOTA MOTOR CO LTD
15 patentsUS4565106AJan 21, 1986
Gear transmission mechanism with multiple layshafts
TOYOTA MOTOR CO LTD56 citations96
US4002151AJan 11, 1977
Diesel engine and method for improving the performance thereof
TOYOTA MOTOR CO LTD43 citations92
US4256063AMar 17, 1981
Intake system of a multi-cylinder internal combustion engine
TOYOTA MOTOR CO LTD27 citations82
US4450793AMay 29, 1984
Intake system of an internal combustion engine
TOYOTA MOTOR CO LTD10 citations74
US4336776AJun 29, 1982
Swirl-inducing apparatus for internal combustion engines
TOYOTA MOTOR CO LTD15 citations74
US4254747AMar 10, 1981
Intake system of a multi-cylinder internal combustion engine
TOYOTA MOTOR CO LTD14 citations74
US4232517ANov 11, 1980
Exhaust gas control actuator
TOYOTA MOTOR CO LTD17 citations74
US4174690ANov 20, 1979
Air-fuel ratio control device
TOYOTA MOTOR CO LTD18 citations74
US4044735AAug 30, 1977
Exhaust gas recirculation valve
TOYOTA MOTOR CO LTD9 citations74
US4023539AMay 17, 1977
Fuel-reforming device for internal combustion engines
TOYOTA MOTOR CO LTD15 citations74
US3981145ASep 21, 1976
Device for purifying exhaust gases by catalytic reaction
TOYOTA MOTOR CO LTD13 citations74
US3980052ASep 14, 1976
Fuel supply installation for internal combustion engines
TOYOTA MOTOR CO LTD18 citations74
US3978836ASep 7, 1976
Suction heat control unit in internal combustion engine
TOYOTA MOTOR CO LTD10 citations74
US3968645AJul 13, 1976
Exhaust gas cleaning device for internal combustion engine
TOYOTA MOTOR CO LTD17 citations73
US4253440AMar 3, 1981
Fuel supply apparatus for internal combustion engines
TOYOTA MOTOR CO LTD4 citations62
TOYODA CHUO KENKYUSHO KK
5 patentsUS4721253AJan 26, 1988
Intermittent type swirl injection nozzle
TOYODA CHUO KENKYUSHO KK58 citations96
US4938306AJul 3, 1990
Four-wheel-drive vehicle having a torque transmission coupling for always transmitting the torque
TOYODA CHUO KENKYUSHO KK47 citations93
US4644821AFeb 24, 1987
Continuously variable vehicular transmission for reducing transmission torque applied to belt-type continuously variable transmission mechanism
TOYODA CHUO KENKYUSHO KK49 citations90
US4653694AMar 31, 1987
Intermittent type swirl injection nozzle
TOYODA CHUO KENKYUSHO KK21 citations82
US5046595ASep 10, 1991
Torque transmission coupling
TOYODA CHUO KENKYUSHO KK11 citations74
NIPPON DENSO CO
5 patentsUS4177778ADec 11, 1979
Carburetors with heating device
NIPPON DENSO CO31 citations92
US4047507ASep 13, 1977
Fuel economizing system
NIPPON DENSO CO49 citations92
US4322800AMar 30, 1982
Method of reducing fuel consumption rate in internal combustion engines
NIPPON DENSO CO34 citations90
US4098244AJul 4, 1978
Control system for an internal combustion engine
NIPPON DENSO CO7 citations74
US4043307AAug 23, 1977
Fuel injection system for an internal combustion engine
NIPPON DENSO CO3 citations63
AISAN IND
5 patentsUS4235210ANov 25, 1980
Fuel supply apparatus for internal combustion engines
AISAN IND12 citations73
US4211201AJul 8, 1980
Fuel supply apparatus for internal combustion engines
AISAN IND9 citations73
US4206599AJun 10, 1980
Internal combustion engine
AISAN IND11 citations73
US4194478AMar 25, 1980
Air-fuel ratio control system for an internal combustion engine
AISAN IND8 citations73
US4294213AOct 13, 1981
Fuel supplying device for use in fuel injection type internal combustion engine
AISAN IND5 citations62
DAIHATSU MOTOR CO LTD
1 patentShowing the top 50 of 53 patents by PatentIndex Score.