Inventor
NAKAGAWA NORIHISA
JP75 patents
⚠️ This page may combine multiple inventors who share the name “NAKAGAWA NORIHISA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOYOTA MOTOR CO LTD
38 patentsUS6318343B1Nov 20, 2001
Fuel pump control system for an internal combustion engine
TOYOTA MOTOR CO LTD75 citations96
US4667636AMay 26, 1987
Fuel injection type internal combustion engine
TOYOTA MOTOR CO LTD59 citations96
US7059120B2Jun 13, 2006
Device for controlling internal combustion engine
TOYOTA MOTOR CO LTD21 citations93
US6018945AFeb 1, 2000
Air-fuel ratio control device for engine
TOYOTA MOTOR CO LTD20 citations93
US5609141AMar 11, 1997
Evaporative fuel control device
TOYOTA MOTOR CO LTD22 citations93
US5517410AMay 14, 1996
Apparatus for controlling vehicle drive force depending upon vehicle load determined by engine load and vehicle speed
TOYOTA MOTOR CO LTD44 citations93
US5226351AJul 13, 1993
Vehicle transmission shift control apparatus using shift boundary lines based on vehicle speed, and engine intake air quantity or throttle or accelerator operation amount
TOYOTA MOTOR CO LTD31 citations93
US4570590AFeb 18, 1986
Internal combustion engine with multiple intake valves
TOYOTA MOTOR CO LTD26 citations92
US4856473AAug 15, 1989
Internal combustion engine with multiple intake valves and EGR arrangement
TOYOTA MOTOR CO LTD51 citations90
US7474956B2Jan 6, 2009
Air-fuel ratio control system of internal combustion engine
TOYOTA MOTOR CO LTD9 citations84
US7159388B2Jan 9, 2007
Air-fuel ratio control device for internal-combustion engine
TOYOTA MOTOR CO LTD10 citations84
US5836288ANov 17, 1998
Method and apparatus for controlling fuel injection in a multicylinder internal combustion engine
TOYOTA MOTOR CO LTD18 citations84
US8381707B2Feb 26, 2013
Internal combustion engine air-fuel ratio control apparatus and method
TOYOTA MOTOR CO LTD10 citations83
US5226390AJul 13, 1993
Apparatus for controlling variation in torque of internal combustion engine
TOYOTA MOTOR CO LTD20 citations82
US7349791B2Mar 25, 2008
Control apparatus for internal combustion engine
TOYOTA MOTOR CO LTD8 citations74
US5909727AJun 8, 1999
Evaporated fuel treatment device of an engine
TOYOTA MOTOR CO LTD11 citations74
US5834624ANov 10, 1998
Air-fuel ratio detecting device and method therefor
TOYOTA MOTOR CO LTD16 citations74
US5727537AMar 17, 1998
Fuel supply control system for an engine
TOYOTA MOTOR CO LTD16 citations74
US5572980ANov 12, 1996
Fuel supply control system for an engine
TOYOTA MOTOR CO LTD9 citations74
US5341295AAug 23, 1994
Vehicle transmission shift control apparatus having means for suitably determining compensating coefficient used in determining shifting of the transmission
TOYOTA MOTOR CO LTD12 citations74
US5323668AJun 28, 1994
Apparatus for regulating vehicle transmission line pressure based on throttle opening or engine intake air quantity
TOYOTA MOTOR CO LTD10 citations74
US5249484AOct 5, 1993
Apparatus for controlling shifting of vehicle automatic transmission based on engine intake air quantity
TOYOTA MOTOR CO LTD14 citations74
US5156128AOct 20, 1992
Apparatus for controlling variation in torque of internal combustion engine
TOYOTA MOTOR CO LTD18 citations74
US4517941AMay 21, 1985
Air introduction system of a fuel injection type engine
TOYOTA MOTOR CO LTD11 citations74
US10180109B2Jan 15, 2019
Internal combustion engine
TOYOTA MOTOR CO LTD2 citations73
US9856811B2Jan 2, 2018
Internal combustion engine
TOYOTA MOTOR CO LTD2 citations73
US9739225B2Aug 22, 2017
Control system of internal combustion engine
TOYOTA MOTOR CO LTD2 citations73
US9624811B2Apr 18, 2017
Control device of internal combustion engine
TOYOTA MOTOR CO LTD4 citations73
US7204080B2Apr 17, 2007
Air-fuel ratio controller for internal combustion engine
TOYOTA MOTOR CO LTD5 citations63
US10655547B2May 19, 2020
Internal combustion engine
TOYOTA MOTOR CO LTD1 citations62
US10634027B2Apr 28, 2020
Exhaust purification system of internal combustion engine
TOYOTA MOTOR CO LTD1 citations61
US7788903B2Sep 7, 2010
Air-fuel ratio control apparatus of internal combustion engine
TOYOTA MOTOR CO LTD2 citations54
US11225896B1Jan 18, 2022
Degradation diagnosis device for exhaust gas control catalyst
TOYOTA MOTOR CO LTD0 citations52
US11143082B2Oct 12, 2021
Exhaust purification system of internal combustion engine
TOYOTA MOTOR CO LTD0 citations52
US11067020B2Jul 20, 2021
Control device of internal combustion engine, internal combustion engine, and vehicle
TOYOTA MOTOR CO LTD0 citations52
US11047286B2Jun 29, 2021
Exhaust gas control apparatus for internal combustion engine
TOYOTA MOTOR CO LTD0 citations52
US10711720B2Jul 14, 2020
Control system for internal combustion engine
TOYOTA MOTOR CO LTD0 citations52
US10132257B2Nov 20, 2018
Control system of internal combustion engine
TOYOTA MOTOR CO LTD1 citations52
NAKAGAWA NORIHISA
6 patentsUS9593635B2Mar 14, 2017
Control system of internal combustion engine
NAKAGAWA NORIHISA3 citations73
US8918267B2Dec 23, 2014
Control apparatus for internal combustion engine
NAKAGAWA NORIHISA5 citations72
US8843259B2Sep 23, 2014
Control apparatus for hybrid vehicle
NAKAGAWA NORIHISA5 citations72
US9109520B2Aug 18, 2015
Control apparatus for internal combustion engine
NAKAGAWA NORIHISA3 citations62
US8406980B2Mar 26, 2013
Air-fuel ratio control device and air-fuel ratio control method for internal combustion engine
NAKAGAWA NORIHISA2 citations62
US9145804B2Sep 29, 2015
Control apparatus for internal combustion engine
NAKAGAWA NORIHISA3 citations56
NISHIKIORI TAKASHI
3 patentsUS8826891B2Sep 9, 2014
Control apparatus for internal combustion engine
NISHIKIORI TAKASHI17 citations83
US8443588B2May 21, 2013
Control apparatus for internal combustion engine
NISHIKIORI TAKASHI9 citations83
US8989988B2Mar 24, 2015
Control apparatus for internal combustion engine
NISHIKIORI TAKASHI2 citations62
FUJIWARA TAKAHIKO
2 patentsHAGIMOTO TAIGA
1 patentShowing the top 50 of 75 patents by PatentIndex Score.