Inventor · disambiguated record
Keiichiro Aoki
Also filed as: AOKI KEIICHIRO
113 granted patents·17 pending applications·502 citations·filing 1996–2023
99Inventor score
Top patents by PatentIndex Score
130 records- 0195US10184913B2Abnormality diagnosis system of a gas sensorTOYOTA MOTOR CO LTD·Filed 2016·Granted Jan 22, 2019·11 cites·16 claims
- 0295US9528424B2Malfunction diagnosis device for exhaust gas purification device of internal combustion engineTOYOTA MOTOR CO LTD·Filed 2016·Granted Dec 27, 2016·14 cites·7 claims
- 0394US9897028B2Diagnosis system of internal combustion engineTOYOTA MOTOR CO LTD·Filed 2013·Granted Feb 20, 2018·11 cites·13 claims
- 0493US10365183B2Abnormality diagnosis system of air-fuel ratio sensorTOYOTA MOTOR CO LTD·Filed 2013·Granted Jul 30, 2019·11 cites·17 claims
- 0592US9850840B2Diagnosis system of internal combustion engineMIYAMOTO HIROSHI·Filed 2013·Granted Dec 26, 2017·11 cites·17 claims
- 0692US9719449B2Diagnosis system of internal combustion engineMIYAMOTO HIROSHI·Filed 2013·Granted Aug 1, 2017·11 cites·11 claims
- 0787US8736284B2Particulate matter detection deviceAOKI KEIICHIRO·Filed 2010·Granted May 27, 2014·6 cites·9 claims
- 0886US9670819B2Catalyst deterioration determination systemAOKI KEIICHIRO·Filed 2012·Granted Jun 6, 2017·7 cites·7 claims
- 0986US9261007B2Catalyst-degradation detection deviceAOKI KEIICHIRO·Filed 2011·Granted Feb 16, 2016·7 cites·15 claims
- 1084US9753005B2SOx concentration detection deviceTOYOTA MOTOR CO LTD·Filed 2013·Granted Sep 5, 2017·5 cites·3 claims
- 1184US7597091B2Air-fuel ratio control apparatus and method for an internal combustion engineTOYOTA MOTOR CO LTD·Filed 2008·Granted Oct 6, 2009·13 cites·4 claims
- 1282US8839610B2Controller of internal combustion engineAOKI KEIICHIRO·Filed 2011·Granted Sep 23, 2014·5 cites·8 claims
- 1381US10598063B2Exhaust purification system of internal combustion engineTOYOTA MOTOR CO LTD·Filed 2018·Granted Mar 24, 2020·2 cites·9 claims
- 1481US9891188B2Gas concentration detecting deviceTOYOTA MOTOR CO LTD·Filed 2015·Granted Feb 13, 2018·2 cites·14 claims
- 1580US8359841B2Exhaust purifying apparatus for an internal combustion engineTOYOTA MOTOR CO LTD·Filed 2009·Granted Jan 29, 2013·10 cites·5 claims
- 1679US6286493B1Control device for an air-fuel ratio sensorTOYOTA MOTOR CO LTD·Filed 2000·Granted Sep 11, 2001·23 cites·12 claims
- 1777US8670917B2Air-fuel-ratio imbalance determination apparatus for internal combustion engineAOKI KEIICHIRO·Filed 2009·Granted Mar 11, 2014·9 cites·14 claims
- 1877US8401766B2Inter-cylinder air-fuel ratio imbalance determination apparatus for internal combustion engineIWAZAKI YASUSHI·Filed 2009·Granted Mar 19, 2013·9 cites·12 claims
- 1976US11319890B2Abnormality detection device for air-fuel ratio detection deviceTOYOTA MOTOR CO LTD·Filed 2021·Granted May 3, 2022·1 cites·4 claims
- 2076US9732659B2SOx concentration detection device of internal combustion engineTOYOTA MOTOR CO LTD·Filed 2014·Granted Aug 15, 2017·2 cites·17 claims
- 2175US10126204B2Nitrogen oxide sensorTOYOTA MOTOR CO LTD·Filed 2017·Granted Nov 13, 2018·1 cites·8 claims
- 2275US9983165B2Nitrogen oxide decomposition material and use thereofJAPAN FINE CERAMICS CT·Filed 2014·Granted May 29, 2018·2 cites·13 claims
- 2375US8486166B2Fuel reforming apparatusYAHAGI HIDEO·Filed 2009·Granted Jul 16, 2013·4 cites·18 claims
- 2475US7850833B2Oxygen sensor and air/fuel ratio control systemTOYOTA MOTOR CO LTD·Filed 2006·Granted Dec 14, 2010·4 cites·10 claims
- 2575US6151954ADevice for detecting knocking in an internal combustion engineTOYOTA MOTOR CO LTD·Filed 1997·Granted Nov 28, 2000·23 cites·32 claims
- 2675US5656190AController for a heater for an air-fuel ratio sensor and a method thereofTOYOTA MOTOR CO LTD·Filed 1996·Granted Aug 12, 1997·31 cites·2 claims
- 2773US9194315B2Air-fuel ratio imbalance among cylinders determining apparatus for an internal combustion engineIWAZAKI YASUSHI·Filed 2009·Granted Nov 24, 2015·3 cites·3 claims
- 2872US9803577B2Method and apparatus for controlling internal combustion engineTOYOTA MOTOR CO LTD·Filed 2016·Granted Oct 31, 2017·1 cites·12 claims
- 2972US8943809B2Control apparatus for internal combustion engineAOKI KEIICHIRO·Filed 2011·Granted Feb 3, 2015·5 cites·6 claims
- 3072US8721854B2Control device for exhaust gas sensor of internal-combustion engineAOKI KEIICHIRO·Filed 2004·Granted May 13, 2014·10 cites·11 claims
- 3172US7698886B2Catalyst deterioration degree acquiring apparatus in internal combustion engineTOYOTA MOTOR CO LTD·Filed 2008·Granted Apr 20, 2010·5 cites·2 claims
- 3271US12359602B2SOx concentration acquiring apparatus of internal combustion engineTOYOTA MOTOR CO LTD·Filed 2021·Granted Jul 15, 2025·0 cites·10 claims
- 3371US9347352B2Correction device for air/fuel ratio sensorAOKI KEIICHIRO·Filed 2011·Granted May 24, 2016·2 cites·7 claims
- 3469US11092102B2Sensor systemTOYOTA MOTOR CO LTD·Filed 2019·Granted Aug 17, 2021·1 cites·7 claims
- 3569US10408149B2Control device for internal combustion engineAOKI KEIICHIRO·Filed 2013·Granted Sep 10, 2019·1 cites·5 claims
- 3669US9528419B2Particulate matter controller for an internal combustion engineAOKI KEIICHIRO·Filed 2011·Granted Dec 27, 2016·2 cites·6 claims
- 3769US8452521B2Inter-cylinder air-fuel ratio imbalance determination apparatus for an internal combustion engineIWAZAKI YASUSHI·Filed 2009·Granted May 28, 2013·6 cites·18 claims
- 3867US10473049B2Control system of internal combustion engineHAYASHITA GO·Filed 2013·Granted Nov 12, 2019·1 cites·2 claims
- 3967US10001076B2Control system of internal combustion engineTOYOTA MOTOR CO LTD·Filed 2013·Granted Jun 19, 2018·2 cites·17 claims
- 4065US10626819B2Diagnosis system of internal combustion engineTOYOTA MOTOR CO LTD·Filed 2018·Granted Apr 21, 2020·0 cites·6 claims
- 4165US9745911B2Control system of internal combustion engineHAYASHITA GO·Filed 2013·Granted Aug 29, 2017·2 cites·10 claims
- 4265US8868317B2Fuel injection amount control apparatus for an internal combustion engineAOKI KEIICHIRO·Filed 2010·Granted Oct 21, 2014·2 cites·15 claims
- 4363US6343499B1Air-fuel ratio detecting apparatus and methodTOYOTA MOTOR CO LTD·Filed 1999·Granted Feb 5, 2002·27 cites·16 claims
- 4463US2019186326A1SOx CONCENTRATION ACQUIRING APPARATUS OF INTERNAL COMBUSTION ENGINETOYOTA MOTOR CO LTD·Filed 2018·Application pending·0 cites
- 4562US6205989B1Control device for air-fuel radio sensorTOYOTA MOTOR CO LTD·Filed 1999·Granted Mar 27, 2001·20 cites·10 claims
- 4661US7743759B2Gas sensor controllerTOYOTA MOTOR CO LTD·Filed 2008·Granted Jun 29, 2010·4 cites·7 claims
- 4761US7591259B2Control system for an exhaust gas sensorTOYOTA MOTOR CO LTD·Filed 2009·Granted Sep 22, 2009·2 cites·2 claims
- 4860US12071907B2Control device for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2023·Granted Aug 27, 2024·0 cites·5 claims
- 4960US11920532B2Exhaust gas control apparatus for internal combustion engine and exhaust gas control method for the sameTOYOTA MOTOR CO LTD·Filed 2023·Granted Mar 5, 2024·0 cites·8 claims
- 5060US11199148B2Control device for exhaust sensorTOYOTA MOTOR CO LTD·Filed 2021·Granted Dec 14, 2021·0 cites·6 claims
Showing the top 50 of 130 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →