Inventor · disambiguated record
Norihisa Nakagawa
Also filed as: NAKAGAWA NORIHISA
75 granted patents·2 pending applications·627 citations·filing 1983–2021
99Inventor score
Files withTOYOTA MOTOR CO LTD57NAKAGAWA NORIHISA7NISHIKIORI TAKASHI5FUJIWARA TAKAHIKO3OKAZAKI SHUNTARO2
Top patents by PatentIndex Score
77 records- 0196US4667636AFuel injection type internal combustion engineTOYOTA MOTOR CO LTD·Filed 1986·Granted May 26, 1987·59 cites·24 claims
- 0294US8826891B2Control apparatus for internal combustion engineNISHIKIORI TAKASHI·Filed 2010·Granted Sep 9, 2014·17 cites·4 claims
- 0394US6318343B1Fuel pump control system for an internal combustion engineTOYOTA MOTOR CO LTD·Filed 1999·Granted Nov 20, 2001·75 cites·3 claims
- 0491US4856473AInternal combustion engine with multiple intake valves and EGR arrangementTOYOTA MOTOR CO LTD·Filed 1988·Granted Aug 15, 1989·51 cites·9 claims
- 0589US5517410AApparatus for controlling vehicle drive force depending upon vehicle load determined by engine load and vehicle speedTOYOTA MOTOR CO LTD·Filed 1994·Granted May 14, 1996·44 cites·12 claims
- 0684US8443588B2Control apparatus for internal combustion engineNISHIKIORI TAKASHI·Filed 2010·Granted May 21, 2013·9 cites·8 claims
- 0782US9856811B2Internal combustion engineTOYOTA MOTOR CO LTD·Filed 2016·Granted Jan 2, 2018·2 cites·9 claims
- 0880US9624811B2Control device of internal combustion engineTOYOTA MOTOR CO LTD·Filed 2014·Granted Apr 18, 2017·4 cites·12 claims
- 0980US5226351AVehicle transmission shift control apparatus using shift boundary lines based on vehicle speed, and engine intake air quantity or throttle or accelerator operation amountTOYOTA MOTOR CO LTD·Filed 1992·Granted Jul 13, 1993·31 cites·28 claims
- 1079US10180109B2Internal combustion engineTOYOTA MOTOR CO LTD·Filed 2016·Granted Jan 15, 2019·2 cites·10 claims
- 1178US8381707B2Internal combustion engine air-fuel ratio control apparatus and methodTOYOTA MOTOR CO LTD·Filed 2009·Granted Feb 26, 2013·10 cites·20 claims
- 1277US7474956B2Air-fuel ratio control system of internal combustion engineTOYOTA MOTOR CO LTD·Filed 2006·Granted Jan 6, 2009·9 cites·25 claims
- 1374US10655547B2Internal combustion engineTOYOTA MOTOR CO LTD·Filed 2016·Granted May 19, 2020·1 cites·12 claims
- 1474US7349791B2Control apparatus for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2005·Granted Mar 25, 2008·8 cites·10 claims
- 1574US4570590AInternal combustion engine with multiple intake valvesTOYOTA MOTOR CO LTD·Filed 1985·Granted Feb 18, 1986·26 cites·5 claims
- 1673US9593635B2Control system of internal combustion engineNAKAGAWA NORIHISA·Filed 2013·Granted Mar 14, 2017·3 cites·18 claims
- 1773US8843259B2Control apparatus for hybrid vehicleNAKAGAWA NORIHISA·Filed 2010·Granted Sep 23, 2014·5 cites·7 claims
- 1872US10634027B2Exhaust purification system of internal combustion engineTOYOTA MOTOR CO LTD·Filed 2018·Granted Apr 28, 2020·1 cites·6 claims
- 1972US9903297B2Control system of internal combustion engineTOYOTA MOTOR CO LTD·Filed 2015·Granted Feb 27, 2018·1 cites·20 claims
- 2071US7204080B2Air-fuel ratio controller for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2006·Granted Apr 17, 2007·5 cites·4 claims
- 2170US10087864B2Control device of internal combustion engineTOYOTA MOTOR CO LTD·Filed 2015·Granted Oct 2, 2018·1 cites·9 claims
- 2269US9739225B2Control system of internal combustion engineTOYOTA MOTOR CO LTD·Filed 2014·Granted Aug 22, 2017·2 cites·6 claims
- 2368US10132257B2Control system of internal combustion engineTOYOTA MOTOR CO LTD·Filed 2015·Granted Nov 20, 2018·1 cites·5 claims
- 2468US9145804B2Control apparatus for internal combustion engineNAKAGAWA NORIHISA·Filed 2011·Granted Sep 29, 2015·3 cites·6 claims
- 2568US8122869B2Air-fuel ratio control system of a multi-cylinder internal combustion engineFUJIWARA TAKAHIKO·Filed 2007·Granted Feb 28, 2012·6 cites·6 claims
- 2668US7059120B2Device for controlling internal combustion engineTOYOTA MOTOR CO LTD·Filed 2004·Granted Jun 13, 2006·21 cites·17 claims
- 2765US9109520B2Control apparatus for internal combustion engineNAKAGAWA NORIHISA·Filed 2010·Granted Aug 18, 2015·3 cites·4 claims
- 2865US8918267B2Control apparatus for internal combustion engineNAKAGAWA NORIHISA·Filed 2009·Granted Dec 23, 2014·5 cites·4 claims
- 2965US5226390AApparatus for controlling variation in torque of internal combustion engineTOYOTA MOTOR CO LTD·Filed 1991·Granted Jul 13, 1993·20 cites·23 claims
- 3064US5609141AEvaporative fuel control deviceTOYOTA MOTOR CO LTD·Filed 1995·Granted Mar 11, 1997·22 cites·14 claims
- 3163US4517941AAir introduction system of a fuel injection type engineTOYOTA MOTOR CO LTD·Filed 1983·Granted May 21, 1985·11 cites·12 claims
- 3262US6018945AAir-fuel ratio control device for engineTOYOTA MOTOR CO LTD·Filed 1998·Granted Feb 1, 2000·20 cites·16 claims
- 3362US5156128AApparatus for controlling variation in torque of internal combustion engineTOYOTA MOTOR CO LTD·Filed 1991·Granted Oct 20, 1992·18 cites·18 claims
- 3461US9903298B2Internal combustion engineTOYOTA MOTOR CO LTD·Filed 2017·Granted Feb 27, 2018·0 cites·19 claims
- 3560US9732691B2Control system of internal combustion engineOKAZAKI SHUNTARO·Filed 2013·Granted Aug 15, 2017·1 cites·12 claims
- 3660US8230846B2Air-fuel ratio control device for internal combustion engineFUJIWARA TAKAHIKO·Filed 2008·Granted Jul 31, 2012·4 cites·7 claims
- 3760US8146353B2Exhaust purification device for internal combustion engine, and exhaust control device and exhaust control method for internal combustion engineHAGIMOTO TAIGA·Filed 2008·Granted Apr 3, 2012·2 cites·4 claims
- 3860US7159388B2Air-fuel ratio control device for internal-combustion engineTOYOTA MOTOR CO LTD·Filed 2004·Granted Jan 9, 2007·10 cites·17 claims
- 3959US10711720B2Control system for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2018·Granted Jul 14, 2020·0 cites·5 claims
- 4059US8989988B2Control apparatus for internal combustion engineNISHIKIORI TAKASHI·Filed 2010·Granted Mar 24, 2015·2 cites·6 claims
- 4159US5836288AMethod and apparatus for controlling fuel injection in a multicylinder internal combustion engineTOYOTA MOTOR CO LTD·Filed 1997·Granted Nov 17, 1998·18 cites·6 claims
- 4257US11067020B2Control device of internal combustion engine, internal combustion engine, and vehicleTOYOTA MOTOR CO LTD·Filed 2019·Granted Jul 20, 2021·0 cites·14 claims
- 4356US8560210B2Control apparatus for internal combustion engineSANO KEISUKE·Filed 2010·Granted Oct 15, 2013·1 cites·5 claims
- 4455US11143082B2Exhaust purification system of internal combustion engineTOYOTA MOTOR CO LTD·Filed 2019·Granted Oct 12, 2021·0 cites·8 claims
- 4555US11047286B2Exhaust gas control apparatus for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2019·Granted Jun 29, 2021·0 cites·16 claims
- 4655US8806856B2Control apparatus for internal combustion engineNAKAGAWA NORIHISA·Filed 2010·Granted Aug 19, 2014·1 cites·10 claims
- 4755US5834624AAir-fuel ratio detecting device and method thereforTOYOTA MOTOR CO LTD·Filed 1997·Granted Nov 10, 1998·16 cites·3 claims
- 4854US11225896B1Degradation diagnosis device for exhaust gas control catalystTOYOTA MOTOR CO LTD·Filed 2021·Granted Jan 18, 2022·0 cites·12 claims
- 4953US5727537AFuel supply control system for an engineTOYOTA MOTOR CO LTD·Filed 1995·Granted Mar 17, 1998·16 cites·16 claims
- 5051US8406980B2Air-fuel ratio control device and air-fuel ratio control method for internal combustion engineNAKAGAWA NORIHISA·Filed 2008·Granted Mar 26, 2013·2 cites·6 claims
Showing the top 50 of 77 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Norihisa Nakagawa files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →