Inventor · disambiguated record
Toshinari Nagai
Also filed as: NAGAI TOSHINARI
48 granted patents·1,230 citations·filing 1985–2005
99Inventor score
Top patents by PatentIndex Score
48 records- 0197US6502389B2Air-fuel ratio control system for internal combustion engine and control method therofTOYOTA MOTOR CO LTD·Filed 2001·Granted Jan 7, 2003·108 cites·25 claims
- 0297US6481201B2Air-fuel ratio control apparatus of internal combustion engineTOYOTA MOTOR CO LTD·Filed 2001·Granted Nov 19, 2002·107 cites·31 claims
- 0396US4739614ADouble air-fuel ratio sensor system in internal combustion engineTOYOTA MOTOR CO LTD·Filed 1986·Granted Apr 26, 1988·70 cites·108 claims
- 0494US4831838ADouble air-fuel ratio sensor system carrying out learning control operationTOYOTA MOTOR CO LTD·Filed 1987·Granted May 23, 1989·54 cites·32 claims
- 0590US7117665B2Catalyst degradation determining methodTOYOTA MOTOR CO LTD·Filed 2005·Granted Oct 10, 2006·13 cites·3 claims
- 0689US6901744B2Air-fuel ratio control apparatus of internal combustion engineTOYOTA MOTOR CO LTD·Filed 2002·Granted Jun 7, 2005·32 cites·4 claims
- 0787US6915628B2Catalyst degradation determining methodTOYOTA MOTOR CO LTD·Filed 2003·Granted Jul 12, 2005·29 cites·3 claims
- 0886US7198952B2Catalyst deterioration detecting apparatus and methodTOYOTA MOTOR CO LTD·Filed 2002·Granted Apr 3, 2007·38 cites·17 claims
- 0986US5148795AApparatus for controlling heater for oxygen sensorTOYOTA MOTOR CO LTD·Filed 1991·Granted Sep 22, 1992·42 cites·11 claims
- 1085US6792750B2Emission control apparatus of internal combustion engine and control method for the emission control apparatusTOYOTA MOTOR CO LTD·Filed 2002·Granted Sep 21, 2004·30 cites·16 claims
- 1182US4707984ADouble air-fuel ratio sensor system having improved response characteristicsTOYOTA MOTOR CO LTD·Filed 1986·Granted Nov 24, 1987·26 cites·38 claims
- 1281US5904902AExhaust purifier for internal combustion engineTOYOTA MOTOR CO LTD·Filed 1996·Granted May 18, 1999·51 cites·12 claims
- 1379US7162862B2Air-fuel ratio control apparatus for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2002·Granted Jan 16, 2007·27 cites·23 claims
- 1479US4707985ADouble air-fuel ratio sensor system carrying out learning control operationTOYOTA MOTOR CO LTD·Filed 1986·Granted Nov 24, 1987·23 cites·48 claims
- 1579US4693076ADouble air-fuel ratio sensor system having improved response characteristicsTOYOTA MOTOR CO LTD·Filed 1986·Granted Sep 15, 1987·24 cites·36 claims
- 1678US5111792AApparatus for controlling heater for oxygen sensor and fuel control apparatus using the sameTOYOTA MOTOR CO LTD·Filed 1991·Granted May 12, 1992·45 cites·17 claims
- 1774US4570590AInternal combustion engine with multiple intake valvesTOYOTA MOTOR CO LTD·Filed 1985·Granted Feb 18, 1986·26 cites·5 claims
- 1873US7165389B2Catalyst degradation determining methodTOYOTA MOTOR CO LTD·Filed 2005·Granted Jan 23, 2007·7 cites·3 claims
- 1973US4796425ADouble air-fuel ratio sensor system carrying out learning control operationTOYOTA MOTOR CO LTD·Filed 1987·Granted Jan 10, 1989·19 cites·44 claims
- 2073US4745741ADouble air-fuel ratio sensor system having improved response characteristicsTOYOTA MOTOR CO LTD·Filed 1986·Granted May 24, 1988·19 cites·144 claims
- 2172US7032374B2Exhaust purification apparatus for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2004·Granted Apr 25, 2006·19 cites·16 claims
- 2272US4809501ADouble air-fuel ratio sensor system having improved exhaust emission characteristicsTOYOTA MOTOR CO LTD·Filed 1988·Granted Mar 7, 1989·18 cites·20 claims
- 2372US4779414ADouble air-fuel ratio sensor system carrying out learning control operationTOYOTA MOTOR CO LTD·Filed 1986·Granted Oct 25, 1988·19 cites·2 claims
- 2471US6860101B2Exhaust gas purification system for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2002·Granted Mar 1, 2005·18 cites·11 claims
- 2571US5743086ADevice for judging deterioration of catalyst of engineTOYOTA MOTOR CO LTD·Filed 1996·Granted Apr 28, 1998·42 cites·8 claims
- 2669US5737917ADevice for judging deterioration of catalyst of engineTOYOTA MOTOR CO LTD·Filed 1996·Granted Apr 14, 1998·25 cites·11 claims
- 2768US6546719B2Air-fuel ratio control apparatus of internal combustion engineTOYOTA MOTOR CO LTD·Filed 2001·Granted Apr 15, 2003·15 cites·10 claims
- 2868US4761950ADouble air-fuel ratio sensor system carrying out learning control operationTOYOTA MOTOR CO LTD·Filed 1986·Granted Aug 9, 1988·17 cites·28 claims
- 2967US5481462AApparatus for determining an altitude condition of an automotive vehicleTOYOTA MOTOR CO LTD·Filed 1993·Granted Jan 2, 1996·21 cites·12 claims
- 3066US6988359B2Exhaust gas control apparatus and exhaust gas purification method for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2003·Granted Jan 24, 2006·14 cites·17 claims
- 3166US5476081AApparatus for controlling air-fuel ratio of air-fuel mixture to an engine having an evaporated fuel purge systemTOYOTA MOTOR CO LTD·Filed 1994·Granted Dec 19, 1995·22 cites·9 claims
- 3264US5814283AExhaust purifier of internal combustion engineTOYOTA MOTOR CO LTD·Filed 1996·Granted Sep 29, 1998·30 cites·14 claims
- 3363US4747265ADouble air-fuel ratio sensor system having improved exhaust emission characteristicsTOYOTA MOTOR CO LTD·Filed 1986·Granted May 31, 1988·12 cites·12 claims
- 3461US4729219ADouble air-fuel ratio sensor system having improved response characteristicsTOYOTA MOTOR CO LTD·Filed 1986·Granted Mar 8, 1988·13 cites·38 claims
- 3557US5706654AAir-fuel ratio control device for an internal combustion engineTOYOTA MOTOR CO LTD·Filed 1996·Granted Jan 13, 1998·18 cites·4 claims
- 3656US5811884AAutomotive onboard load control apparatus and methodTOYOTA MOTOR CO LTD·Filed 1997·Granted Sep 22, 1998·22 cites·8 claims
- 3755US8234853B2Catalyst degradation determining methodKAMOTO AKIRA·Filed 2005·Granted Aug 7, 2012·1 cites·4 claims
- 3854US4823270AMethod and apparatus for controlling air-fuel ratio in internal combustion engineTOYOTA MOTOR CO LTD·Filed 1986·Granted Apr 18, 1989·10 cites·16 claims
- 3954US4712373ADouble air-fuel ratio sensor system having improved response characteristicsTOYOTA MOTOR CO LTD·Filed 1986·Granted Dec 15, 1987·11 cites·16 claims
- 4053US5735120ADevice for judging the deterioration of a catalyst of an engineTOYOTA MOTOR CO LTD·Filed 1996·Granted Apr 7, 1998·15 cites·17 claims
- 4153US4819427ADouble air-fuel ratio sensor system having improved exhaust emission characteristicsTOYOTA MOTOR CO LTD·Filed 1988·Granted Apr 11, 1989·8 cites·20 claims
- 4253US4723408ADouble air-fuel ratio sensor system carrying out learning control operationTOYOTA MOTOR CO LTD·Filed 1986·Granted Feb 9, 1988·10 cites·36 claims
- 4350US5546917AApparatus for disposing of fuel vaporTOYOTA MOTOR CO LTD·Filed 1995·Granted Aug 20, 1996·15 cites·14 claims
- 4447US5392600ASystem for controlling air-fuel ratio in internal combustion engine and method of the sameTOYOTA MOTOR CO LTD·Filed 1994·Granted Feb 28, 1995·10 cites·20 claims
- 4546US5848530ADevice for detecting deterioration of catalytic converter for cleaning exhaust gasesTOYOTA MOTOR CO LTD·Filed 1997·Granted Dec 15, 1998·17 cites·9 claims
- 4643US5577486AFuel-injection control apparatus for an engineTOYOTA MOTOR CO LTD·Filed 1995·Granted Nov 26, 1996·11 cites·12 claims
- 4739US6666199B2Control device of internal combustion engine and method of judging failure of sensorTOYOTA MOTOR CO LTD·Filed 2001·Granted Dec 23, 2003·2 cites·19 claims
- 4834US5558072AApparatus for disposing of fuel-vaporTOYOTA MOTOR CO LTD·Filed 1995·Granted Sep 24, 1996·5 cites·10 claims
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