Inventor · disambiguated record
Toshifumi Usui
Also filed as: USUI TOSHIFUMI
46 granted patents·8 pending applications·725 citations·filing 1981–2006
98Inventor score
Top patents by PatentIndex Score
54 records- 0191US6701892B2Throttle valve control apparatus of internal combustion engine and automobile using the sameHITACHI LTD·Filed 2001·Granted Mar 9, 2004·30 cites·8 claims
- 0291US4615173AExhaust emission control apparatus for diesel engineHITACHI LTD·Filed 1984·Granted Oct 7, 1986·72 cites·13 claims
- 0389US6559637B2Non-contact rotational position sensor and throttle valve assembly including non-contact rotational position sensorHITACHI LTD·Filed 2001·Granted May 6, 2003·32 cites·8 claims
- 0489US6382181B2Throttle apparatus for an internal combustion engineHITACHI LTD·Filed 2001·Granted May 7, 2002·22 cites·1 claims
- 0588US7121259B2Throttle device for internal-combustion engineHITACHI CAR ENG CO LTD·Filed 2005·Granted Oct 17, 2006·14 cites·5 claims
- 0688US4887577AHot-wire type air flow meter and an internal combustion engine with the sameHITACHI LTD·Filed 1988·Granted Dec 19, 1989·45 cites·11 claims
- 0786US6390062B1Throttle device of internal combustion engineHITACHI LTD·Filed 1999·Granted May 21, 2002·39 cites·14 claims
- 0882US6691678B1Throttle assembly for internal combustion engine, and throttle sensorHITACHI LTD·Filed 2000·Granted Feb 17, 2004·23 cites·8 claims
- 0982US4974445AHot wire type of air flow meter and internal combustion engine using the sameHITACHI LTD·Filed 1989·Granted Dec 4, 1990·26 cites·17 claims
- 1081US6591809B2Throttle device for internal-combustion engineHITACHI LTD·Filed 2002·Granted Jul 15, 2003·19 cites·4 claims
- 1181US6371080B1Throttle device for internal-combustion engineHITACHI LTD·Filed 2001·Granted Apr 16, 2002·21 cites·3 claims
- 1278US6691681B2Throttle apparatus for an internal combustion engineHITACHI LTD·Filed 2003·Granted Feb 17, 2004·12 cites·4 claims
- 1377US6199537B1Method and apparatus for controlling intake air flow rate of an engine and method for controlling outputHITACHI LTD·Filed 1999·Granted Mar 13, 2001·23 cites·20 claims
- 1476US6626143B1Throttle device of internal combustion engineHITACHI LTD·Filed 1999·Granted Sep 30, 2003·24 cites·11 claims
- 1575US6418908B2Throttle apparatus for an internal combustion engineHITACHI LTD·Filed 2001·Granted Jul 16, 2002·10 cites·4 claims
- 1674US6945228B2Throttle device for internal-combustion engineHITACHI CAR ENG CO LTD·Filed 2003·Granted Sep 20, 2005·14 cites·8 claims
- 1774US6382180B2Throttle apparatus for an internal combustion engineHITACHI LTD·Filed 2001·Granted May 7, 2002·10 cites·5 claims
- 1870US6047680AElectronically controlled throttle apparatus for an engineHITACHI LTD·Filed 1998·Granted Apr 11, 2000·20 cites·8 claims
- 1969US7231903B2Throttle apparatus for an internal combustion engineHITACHI CAR ENG CO LTD·Filed 2005·Granted Jun 19, 2007·3 cites·23 claims
- 2069US7152581B2Throttle valve control apparatus of internal combustion engine and automobile using the sameHITACHI CAR ENG CO LTD·Filed 2003·Granted Dec 26, 2006·9 cites·10 claims
- 2169US4581891AExhaust emission control device for diesel engineHITACHI LTD·Filed 1984·Granted Apr 15, 1986·22 cites·6 claims
- 2267US6098594AElectric-control-type throttle apparatusHITACHI LTD·Filed 1998·Granted Aug 8, 2000·23 cites·17 claims
- 2366US6694947B2Throttle apparatus for an internal combustion engineHITACHI LTD·Filed 2003·Granted Feb 24, 2004·6 cites·6 claims
- 2465US4991560AHot-wire air flow meter and internal combustion engine provided with sameHITACHI LTD·Filed 1990·Granted Feb 12, 1991·26 cites·23 claims
- 2563US6966297B2Throttle device for internal-combustion engineHITACHI CAR ENG CO LTD·Filed 2003·Granted Nov 22, 2005·9 cites·6 claims
- 2661US6488010B2Throttle device for internal-combustion engineHITACHI LTD·Filed 2002·Granted Dec 3, 2002·8 cites·4 claims
- 2760US7093581B2Throttle valve control apparatus of internal combustion engine and automobile using the sameHITACHI CAR ENG CO LTD·Filed 2004·Granted Aug 22, 2006·6 cites·11 claims
- 2859US4815192AMethod of securing an elongated vibration amplifier member to an annular vibrating reedHITACHI LTD·Filed 1987·Granted Mar 28, 1989·17 cites·4 claims
- 2958US7367315B2Throttle valve control apparatus of internal combustion engine and automobile using the sameHITACHI LTD·Filed 2006·Granted May 6, 2008·1 cites·9 claims
- 3058US6543416B2Electric-control-type throttle apparatusHITACHI LTD·Filed 2002·Granted Apr 8, 2003·8 cites·2 claims
- 3158US4549399AExhaust emission control system for diesel engineHITACHI LTD·Filed 1984·Granted Oct 29, 1985·23 cites·5 claims
- 3257US6386182B2Method and apparatus for controlling intake air flow rate of an engine and method for controlling outputHITACHI LTD·Filed 2001·Granted May 14, 2002·6 cites·3 claims
- 3357USRE34403EHot-wire type air flow meter and an internal combustion engine with the sameHITACHI LTD·Filed 1991·Granted Oct 12, 1993·16 cites·12 claims
- 3455USRE40523ENon-contact rotational position sensor and throttle valve assembly including non-contact rotational position sensorHITACHI LTD·Filed 2004·Granted Sep 30, 2008·5 cites·21 claims
- 3554US4723443AIntake air flow sensorHITACHI LTD·Filed 1986·Granted Feb 9, 1988·16 cites·3 claims
- 3652US2007012288A1Throttle valve control apparatus of internal combustion engine and automobile using the sameHITACHI CAR ENG CO LTD·Filed 2006·Application pending·0 cites
- 3751US7055498B2Throttle assembly for internal combustion engine, and throttle sensorHITACHI CAR ENG CO LTD·Filed 2003·Granted Jun 6, 2006·5 cites·7 claims
- 3847US6401690B1Electric-control-type throttle apparatusHITACHI LTD·Filed 2000·Granted Jun 11, 2002·5 cites·4 claims
- 3947US5231871AHot-electrical-resistance type gas flow meter and internal combustion engine with hot-electrical-resistance type gas flow meterHITACHI LTD·Filed 1991·Granted Aug 3, 1993·12 cites·11 claims
- 4043US4790178AIntake structure of internal combustion engine with bypass intake passage for mounting air flow meterHITACHI LTD·Filed 1987·Granted Dec 13, 1988·7 cites·2 claims
- 4142US4506506AExhaust emission control device for diesel engineHITACHI LTD·Filed 1983·Granted Mar 26, 1985·8 cites·2 claims
- 4241US5083455AAir meter for an internal combustion engine and method of producing the sameHITACHI LTD·Filed 1990·Granted Jan 28, 1992·11 cites·6 claims
- 4341US2002189585A1Throttle apparatus for an internal combustion engineHITACHI LTD·Filed 2002·Application pending·0 cites
- 4440US6684850B2Electric-control-type throttle apparatusHITACHI LTD·Filed 2003·Granted Feb 3, 2004·2 cites·5 claims
- 4537US2002129790A1Method and apparatus for controlling intake air flow rate of an engine and method for controlling outputFiled 2002·Application pending·0 cites
- 4636US4782805AControl device for throttle valve for internal combustion engineHITACHI LTD·Filed 1986·Granted Nov 8, 1988·6 cites·3 claims
- 4736US2003075147A1Method and apparatus for controlling intake airflow rate of an engine and method for controlling outputFiled 2001·Application pending·0 cites
- 4835US2004060542A1Throttle apparatus for an internal combustion engineHITACHI LTD·Filed 2003·Application pending·0 cites
- 4934US2001035157A1Throttle apparatus for an internal combustion engineHITACHI LTD·Filed 2001·Application pending·0 cites
- 5034US2002033166A1Electronically controlled throttle apparatus for an engineHITACHI LTD·Filed 2001·Application pending·0 cites
Showing the top 50 of 54 patent records by PatentIndex Score.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →