Inventor · disambiguated record
Toshihiko Igashira
Also filed as: IGASHIRA TOSHIHIKO · KAWAI HISASI · MORI KOUICHI
91 granted patents·3,076 citations·filing 1974–2004
99Inventor score
Top patents by PatentIndex Score
91 records- 0199US4621599AMethod and apparatus for operating direct injection type internal combustion engineNIPPON SOKEN·Filed 1984·Granted Nov 11, 1986·121 cites·10 claims
- 0299US4471256APiezoelectric actuator, and valve apparatus having actuatorNIPPON SOKEN·Filed 1983·Granted Sep 11, 1984·99 cites·4 claims
- 0398US4649886AFuel injection system for an internal combustion engineNIPPON SOKEN·Filed 1983·Granted Mar 17, 1987·80 cites·14 claims
- 0498US4603671AFuel injector for an internal combustion engineNIPPON SOKEN·Filed 1984·Granted Aug 5, 1986·126 cites·11 claims
- 0598US4499878AFuel injection system for an internal combustion engineNIPPON SOKEN·Filed 1983·Granted Feb 19, 1985·76 cites·10 claims
- 0696US6367453B1Fuel injection valveDENSO CORP·Filed 2000·Granted Apr 9, 2002·63 cites·10 claims
- 0796US4767959AMethod and apparatus for driving capacitive-type loadNIPPON DENSO CO·Filed 1987·Granted Aug 30, 1988·80 cites·15 claims
- 0895US4784102AFuel injector and fuel injection systemNIPPON SOKEN·Filed 1985·Granted Nov 15, 1988·65 cites·25 claims
- 0995US4465050ADevice for atomizing the fuel for an internal-combustion engineNIPPON SOKEN·Filed 1982·Granted Aug 14, 1984·58 cites·10 claims
- 1094US5159915AFuel injectorNIPPON SOKEN·Filed 1992·Granted Nov 3, 1992·134 cites·20 claims
- 1194US4550744APiezoelectric hydraulic control valveNIPPON SOKEN·Filed 1983·Granted Nov 5, 1985·72 cites·24 claims
- 1293US5201341AElectromagnetic type fluid flow control valveNIPPON SOKEN·Filed 1992·Granted Apr 13, 1993·84 cites·14 claims
- 1392US5305714AFuel supply system for an internal combustion engineNIPPON SOKEN·Filed 1992·Granted Apr 26, 1994·72 cites·23 claims
- 1492US4728074APiezoelectric flow control valveNIPPON SOKEN·Filed 1986·Granted Mar 1, 1988·51 cites·6 claims
- 1592US4514657ASpark plug having dual gaps for internal combustion enginesNIPPON SOKEN·Filed 1981·Granted Apr 30, 1985·61 cites·13 claims
- 1691US6311674B1Fuel injection system for internal combustion engineDENSO CORP·Filed 1999·Granted Nov 6, 2001·62 cites·26 claims
- 1790US4579283APressure responsive fuel injector actuated by pumpNIPPON SOKEN·Filed 1984·Granted Apr 1, 1986·33 cites·9 claims
- 1889US5582805AElectrically heated catalytic apparatusTOYOTA MOTOR CO LTD·Filed 1994·Granted Dec 10, 1996·69 cites·12 claims
- 1989US5239972AGas/liquid separation deviceNIPPON SOKEN·Filed 1992·Granted Aug 31, 1993·64 cites·7 claims
- 2088US5517959ALubricating apparatus for an engineTOYOTA MOTOR CO LTD·Filed 1994·Granted May 21, 1996·70 cites·17 claims
- 2188US4705003AApparatus for controlling electroexpansive actuator avoiding deterioration of polarizationNIPPON SOKEN·Filed 1985·Granted Nov 10, 1987·38 cites·13 claims
- 2288US4202312AIgnition device for rotary piston engineTOYOTA MOTOR CO LTD·Filed 1978·Granted May 13, 1980·55 cites·8 claims
- 2387US4732129AControl apparatus for electroexpansive actuator enabling variation of strokeNIPPON SOKEN·Filed 1986·Granted Mar 22, 1988·60 cites·34 claims
- 2487US4722310AFuel injection control for diesel engineNIPPON SOKEN·Filed 1986·Granted Feb 2, 1988·31 cites·9 claims
- 2587US4667638AFuel injection apparatus for internal combustion engineNIPPON SOKEN·Filed 1985·Granted May 26, 1987·37 cites·18 claims
- 2687US4535735AMulti-gap spark ignition systemNIPPON SOKEN·Filed 1982·Granted Aug 20, 1985·45 cites·1 claims
- 2787US4529164APiezo-type valveNIPPON SOKEN·Filed 1983·Granted Jul 16, 1985·28 cites·20 claims
- 2886US6840466B2Hydraulic control valve and fuel injector using sameDENSO CORP·Filed 2001·Granted Jan 11, 2005·26 cites·17 claims
- 2986US4522177ATemperature compensated fuel injection system for internal combustion enginesNIPPON SOKEN·Filed 1982·Granted Jun 11, 1985·30 cites·3 claims
- 3086US4480619AFlow control deviceNIPPON SOKEN·Filed 1983·Granted Nov 6, 1984·35 cites·45 claims
- 3185US5301642AWarming-up promoting apparatus of internal combustion engineNIPPON SOKEN·Filed 1993·Granted Apr 12, 1994·60 cites·10 claims
- 3285US4635849APiezoelectric low-pressure fuel injectorNIPPON SOKEN·Filed 1985·Granted Jan 13, 1987·39 cites·17 claims
- 3385US4535743AFuel injection apparatus for an internal combustion engineNIPPON SOKEN·Filed 1984·Granted Aug 20, 1985·25 cites·22 claims
- 3483US5398660AFuel vapor purging systemNIPPON DENSO CO·Filed 1993·Granted Mar 21, 1995·48 cites·10 claims
- 3583US4815431AOil heating apparatus for internal combustion engineNIPPON SOKEN·Filed 1986·Granted Mar 28, 1989·39 cites·33 claims
- 3683US4546749AFuel injection apparatusNIPPON SOKEN·Filed 1983·Granted Oct 15, 1985·39 cites·4 claims
- 3782US5363816AValve drive deviceNIPPON SOKEN·Filed 1994·Granted Nov 15, 1994·38 cites·12 claims
- 3882US4433665ADevice for controlling choke valve in carburetor for internal combustion engineNIPPON SOKEN·Filed 1982·Granted Feb 28, 1984·22 cites·11 claims
- 3980US4914344ASpark plug for internal combustion enginesNIPPON SOKEN·Filed 1988·Granted Apr 3, 1990·39 cites·7 claims
- 4080US4470392AMulti-gap spark ignition device for engineNIPPON SOKEN·Filed 1983·Granted Sep 11, 1984·19 cites·9 claims
- 4179US4368380AFlexible ceramic PTC electric heater assemblyNIPPON SOKEN·Filed 1980·Granted Jan 11, 1983·32 cites·9 claims
- 4279US4361125AFuel evaporator for internal combustion engineNIPPON SOKEN·Filed 1981·Granted Nov 30, 1982·20 cites·11 claims
- 4378US4711216AFuel supply device for an internal combustion engineNIPPON SOKEN·Filed 1986·Granted Dec 8, 1987·27 cites·13 claims
- 4476US7185828B2Hydraulic control device, system and method for controlling actuator deviceDENSO CORP·Filed 2004·Granted Mar 6, 2007·14 cites·4 claims
- 4576US6895940B2Hydraulic control device, system and method for controlling actuator deviceDENSO CORP·Filed 2001·Granted May 24, 2005·14 cites·4 claims
- 4675US5284121AInternal combustion engine with evaporated fuel purge systemNIPPON SOKEN·Filed 1992·Granted Feb 8, 1994·27 cites·12 claims
- 4775US4512307AFuel quantity control apparatus of supercharged diesel engine with safety measuresNIPPON SOKEN·Filed 1982·Granted Apr 23, 1985·28 cites·4 claims
- 4875US4406273AIgnition system for internal combustion engineNIPPON SOKEN·Filed 1981·Granted Sep 27, 1983·17 cites·4 claims
- 4973US5404842AInternal combustion engine cooling apparatusNIPPON SOKEN·Filed 1993·Granted Apr 11, 1995·32 cites·20 claims
- 5072US6729554B2Structure of fuel injector for avoiding injection of excess quantity of fuelDENSO CORP·Filed 2001·Granted May 4, 2004·15 cites·4 claims
Showing the top 50 of 91 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Toshihiko Igashira 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 →