Inventor · disambiguated record
Shigeki Nakayama
Also filed as: NAKAYAMA SHIGEKI
77 granted patents·15 pending applications·710 citations·filing 1981–2023
99Inventor score
Files withTOYOTA MOTOR CO LTD32MITSUBISHI ELECTRIC CORP20NAKAYAMA SHIGEKI5OTSUKI HIROSHI5FUJITSU COMPONENT LTD3
Top patents by PatentIndex Score
92 records- 0195US8196404B2Exhaust gas recirculation system for internal combustion engine and method for controlling the sameONISHI TOMOMI·Filed 2007·Granted Jun 12, 2012·33 cites·28 claims
- 0295US7383118B2Control apparatus for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2005·Granted Jun 3, 2008·37 cites·8 claims
- 0393US11162468B2Control deviceTOYOTA MOTOR CO LTD·Filed 2019·Granted Nov 2, 2021·5 cites·3 claims
- 0492US7337766B2Gas-mixture-ignition-time estimation apparatus for internal combustion engine, and control apparatus for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2005·Granted Mar 4, 2008·30 cites·15 claims
- 0592US7281368B2Nox discharge quantity estimation method for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2004·Granted Oct 16, 2007·40 cites·9 claims
- 0691US7848871B2Gas-mixture-state estimation apparatus for internal combustion engine and emission-generation-amount estimation apparatusTOYOTA MOTOR CO LTD·Filed 2006·Granted Dec 7, 2010·23 cites·13 claims
- 0790US9394816B2Particulate filterNAKAYAMA SHIGEKI·Filed 2012·Granted Jul 19, 2016·10 cites·5 claims
- 0890US8220443B2EGR system for internal combustion engine and method for controlling the sameMURATA HIROKI·Filed 2008·Granted Jul 17, 2012·20 cites·6 claims
- 0987US8453446B2Exhaust gas control system for internal combustion engine and method for controlling the sameONISHI TOMOMI·Filed 2008·Granted Jun 4, 2013·18 cites·20 claims
- 1087US5323567APlant cultivating apparatusMITSUBISHI ELECTRIC CORP·Filed 1993·Granted Jun 28, 1994·80 cites·4 claims
- 1186US9011569B2Particulate filterOTSUKI HIROSHI·Filed 2012·Granted Apr 21, 2015·5 cites·6 claims
- 1284US9551261B2Urea water supply systemTOYOTA MOTOR CO LTD·Filed 2015·Granted Jan 24, 2017·3 cites·5 claims
- 1383US10894520B2Control deviceTOYOTA MOTOR CO LTD·Filed 2019·Granted Jan 19, 2021·2 cites·3 claims
- 1482US8108129B2Exhaust gas recirculation apparatus for an internal combustion engineNAKAYAMA SHIGEKI·Filed 2008·Granted Jan 31, 2012·13 cites·3 claims
- 1582US4817332AMethod of enhancing plant growth and apparatus for performing the sameMITSUBISHI ELECTRIC CORP·Filed 1984·Granted Apr 4, 1989·37 cites·2 claims
- 1681US9080480B2Exhaust purification system for internal combustion engineOTSUKI HIROSHI·Filed 2012·Granted Jul 14, 2015·3 cites·17 claims
- 1781US8001953B2Exhaust gas recirculation system for internal combustion engine and method for controlling the sameTOYOTA MOTOR CO LTD·Filed 2008·Granted Aug 23, 2011·10 cites·14 claims
- 1878US9822683B2Exhaust gas purification system for internal combustion engineTSUKAMOTO YOSHIHISA·Filed 2012·Granted Nov 21, 2017·4 cites·7 claims
- 1978US9219277B2Low Co hydrogen storage alloyMITSUI MINING & SMELTING CO·Filed 2013·Granted Dec 22, 2015·1 cites·2 claims
- 2077US6928361B2Control apparatus for motor vehicle and storage mediumTOYOTA MOTOR CO LTD·Filed 2001·Granted Aug 9, 2005·22 cites·46 claims
- 2176US10125647B2Exhaust gas purification apparatus for an internal combustion engineTOYOTA MOTOR CO LTD·Filed 2014·Granted Nov 13, 2018·3 cites·8 claims
- 2276US7930922B2Soot generation amount estimation apparatus for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2006·Granted Apr 26, 2011·10 cites·17 claims
- 2375US2024021387A1Electromagnetic relayFUJITSU COMPONENT LTD·Filed 2023·Application pending·0 cites
- 2473US4453953AIntermittent ozone feeding apparatusMITSUBISHI ELECTRIC CORP·Filed 1981·Granted Jun 12, 1984·32 cites·5 claims
- 2569US11427182B2Control device and control method for hybrid vehicleTOYOTA MOTOR CO LTD·Filed 2020·Granted Aug 30, 2022·1 cites·7 claims
- 2669US6214240B1Method for ozone treatment using a mixture of ozone and hydrogen peroxideMITSUBISHI ELECTRIC CORP·Filed 1999·Granted Apr 10, 2001·32 cites·5 claims
- 2768US9512769B2Urea water supply systemTOYOTA MOTOR CO LTD·Filed 2015·Granted Dec 6, 2016·1 cites·8 claims
- 2868US9494072B2Exhaust purification system of internal combustion engineSAKURAI KENJI·Filed 2013·Granted Nov 15, 2016·2 cites·6 claims
- 2968US8706385B2Exhaust gas recirculation device of internal combustion engine, and control method for the deviceNAKAYAMA SHIGEKI·Filed 2008·Granted Apr 22, 2014·7 cites·7 claims
- 3067US9255505B2Exhaust purification device for internal combustion engineNAKAYAMA SHIGEKI·Filed 2012·Granted Feb 9, 2016·2 cites·8 claims
- 3167US5888271AOzone storing method and ozone storage systemMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Mar 30, 1999·32 cites·15 claims
- 3266US12475782B2Control device, recording medium, and data generation methodTOYOTA MOTOR CO LTD·Filed 2023·Granted Nov 18, 2025·0 cites·10 claims
- 3365US4552659AApparatus for elimination of biofoulingMITSUBISHI ELECTRIC CORP·Filed 1984·Granted Nov 12, 1985·25 cites·1 claims
- 3465US4517849ASampling system for water quality sensorsMITSUBISHI ELECTRIC CORP·Filed 1983·Granted May 21, 1985·22 cites·1 claims
- 3563US7537382B2Method of estimating temperature of gas mixture for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2005·Granted May 26, 2009·5 cites·14 claims
- 3662US12482241B2Machine learning device and recording mediumTOYOTA MOTOR CO LTD·Filed 2023·Granted Nov 25, 2025·0 cites·6 claims
- 3762US11286870B2Catalyst temperature calculating device, and controller for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2019·Granted Mar 29, 2022·0 cites·8 claims
- 3862US2024174216A1Information processing systemTOYOTA MOTOR CO LTD·Filed 2023·Application pending·0 cites
- 3962US2024227496A9Air-conditioning control device and computer-readable recording mediumTOYOTA MOTOR CO LTD·Filed 2023·Application pending·0 cites
- 4061US8955313B2Exhaust purification system of internal combustion engineMATSUO JUNICHI·Filed 2011·Granted Feb 17, 2015·1 cites·13 claims
- 4160US11798765B2Electromagnetic relayFUJITSU COMPONENT LTD·Filed 2019·Granted Oct 24, 2023·0 cites·3 claims
- 4260US8457905B2Soot discharge estimating device for internal combustion enginesONISHI TOMOMI·Filed 2009·Granted Jun 4, 2013·2 cites·8 claims
- 4359US4617755AApparatus for plant cultivationMITSUBISHI ELECTRIC CORP·Filed 1984·Granted Oct 21, 1986·17 cites·5 claims
- 4458US5174793AMethod of enhancing plant growth using light levels lower than photo saturation intensityMITSUBISHI ELECTRIC CORP·Filed 1988·Granted Dec 29, 1992·19 cites·7 claims
- 4557US9464554B2Exhaust gas purification system for internal combustion engineMATSUO JUNICHI·Filed 2012·Granted Oct 11, 2016·1 cites·3 claims
- 4657US9057299B2Exhaust purification system for internal combustion engineOTSUKI HIROSHI·Filed 2012·Granted Jun 16, 2015·0 cites·19 claims
- 4757US9057298B2Exhaust purification system for internal combustion engineOTSUKI HIROSHI·Filed 2012·Granted Jun 16, 2015·0 cites·16 claims
- 4857US8778053B2Method of removing ash from particulate filterOTSUKI HIROSHI·Filed 2012·Granted Jul 15, 2014·0 cites·7 claims
- 4957US2024149890A1On-vehicle systemTOYOTA MOTOR CO LTD·Filed 2023·Application pending·0 cites
- 5057US2024166224A1Vehicle controllerTOYOTA MOTOR CO LTD·Filed 2023·Application pending·0 cites
Showing the top 50 of 92 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →