Inventor · disambiguated record
Takao Sasayama
Also filed as: NISHIMIYA TORAZO · SASAYAMA TAKAO
54 granted patents·1,269 citations·filing 1974–1996
99Inventor score
Files withHITACHI LTD54
Top patents by PatentIndex Score
54 records- 0195US4452210AFuel injection valve drive circuitHITACHI LTD·Filed 1982·Granted Jun 5, 1984·46 cites·8 claims
- 0295US4201161AControl system for internal combustion engineHITACHI LTD·Filed 1978·Granted May 6, 1980·48 cites·10 claims
- 0394US5659254ACapacitance type sensor deviceHITACHI LTD·Filed 1995·Granted Aug 19, 1997·104 cites·8 claims
- 0493US4517837AAir flow rate measuring apparatusHITACHI LTD·Filed 1983·Granted May 21, 1985·42 cites·18 claims
- 0593US4236214AIgnition timing control system for internal combustion engineHITACHI LTD·Filed 1978·Granted Nov 25, 1980·28 cites·16 claims
- 0691US5616844ACapacitance type acceleration sensorHITACHI LTD·Filed 1994·Granted Apr 1, 1997·74 cites·24 claims
- 0790US4297881AHot-wire flow rate measuring apparatusHITACHI LTD·Filed 1979·Granted Nov 3, 1981·46 cites·39 claims
- 0889US4556807APressure transducer with temperature compensation circuitHITACHI LTD·Filed 1983·Granted Dec 3, 1985·50 cites·5 claims
- 0989US4334186AApparatus for driving hot-wire type flow sensorHITACHI LTD·Filed 1980·Granted Jun 8, 1982·46 cites·12 claims
- 1087US4282842AFuel supply control system for internal combustion engineHITACHI LTD·Filed 1978·Granted Aug 11, 1981·29 cites·10 claims
- 1186US4019474AAir-fuel ratio regulating apparatus for an internal combustion engine with exhaust gas sensor characteristic compensationHITACHI LTD·Filed 1975·Granted Apr 26, 1977·29 cites·3 claims
- 1283US4708480ASolid-state optical interferometerHITACHI LTD·Filed 1984·Granted Nov 24, 1987·34 cites·10 claims
- 1383US4348729AEngine control system including non-volatile memory and correction data transfer methodHITACHI LTD·Filed 1980·Granted Sep 7, 1982·25 cites·35 claims
- 1481US5831263AIn-cylinder pressure sensing apparatus for multi-cylinder engineHITACHI LTD·Filed 1995·Granted Nov 3, 1998·38 cites·33 claims
- 1581US5693936APhysical quantity detecting apparatus and internal combustion engine control apparatus each utilizing optical fiberHITACHI LTD·Filed 1994·Granted Dec 2, 1997·43 cites·58 claims
- 1680US4719373AGate circuit of combined field-effect and bipolar transistorsHITACHI LTD·Filed 1987·Granted Jan 12, 1988·28 cites·23 claims
- 1780US4396890AVariable gain amplifierHITACHI LTD·Filed 1980·Granted Aug 2, 1983·23 cites·30 claims
- 1877US5323635AAir fuel ratio detecting arrangement and method therefor for an internal combustion engineHITACHI LTD·Filed 1993·Granted Jun 28, 1994·31 cites·12 claims
- 1975US4718999AAir-fuel ratio detectorHITACHI LTD·Filed 1985·Granted Jan 12, 1988·36 cites·17 claims
- 2075US4558238APressure transducer using integrated circuit elementsHITACHI LTD·Filed 1983·Granted Dec 10, 1985·30 cites·6 claims
- 2173US4781059AMethod and apparatus for detecting combustion pressure in engineHITACHI LTD·Filed 1986·Granted Nov 1, 1988·32 cites·10 claims
- 2273US4604535AFET-bipolar switching device and circuitHITACHI LTD·Filed 1982·Granted Aug 5, 1986·23 cites·8 claims
- 2373US4455980AEngine combustion control methodHITACHI LTD·Filed 1981·Granted Jun 26, 1984·17 cites·14 claims
- 2473US4363097AElectronic type engine control methodHITACHI LTD·Filed 1980·Granted Dec 7, 1982·18 cites·71 claims
- 2572US5745611AOptical fiber pressure sensorHITACHI LTD·Filed 1996·Granted Apr 28, 1998·32 cites·16 claims
- 2671US4703430AMethod controlling air-fuel ratioHITACHI LTD·Filed 1984·Granted Oct 27, 1987·14 cites·7 claims
- 2771US4630206AMethod of fuel injection into engineHITACHI LTD·Filed 1984·Granted Dec 16, 1986·20 cites·3 claims
- 2870US4030462AAir-fuel ratio controller for internal-combustion engineHITACHI LTD·Filed 1976·Granted Jun 21, 1977·17 cites·5 claims
- 2970US3939811AIgnition apparatus for internal combustion engineHITACHI LTD·Filed 1974·Granted Feb 24, 1976·20 cites·20 claims
- 3069US4890017ACMOS-BiCMOS gate circuitHITACHI LTD·Filed 1987·Granted Dec 26, 1989·18 cites·19 claims
- 3168US4363307AMethod for adjusting the supply of fuel to an internal combustion engine for an acceleration conditionHITACHI LTD·Filed 1981·Granted Dec 14, 1982·15 cites·5 claims
- 3264US4501249AFuel injection control apparatus for internal combustion engineHITACHI LTD·Filed 1983·Granted Feb 26, 1985·13 cites·6 claims
- 3360US4829201AGate circuit of combined field-effect and bipolar transistorsHITACHI LTD·Filed 1987·Granted May 9, 1989·13 cites·6 claims
- 3457US5692474AEngine combustion control apparatusHITACHI LTD·Filed 1996·Granted Dec 2, 1997·17 cites·9 claims
- 3557US4900425AOxygen sensorHITACHI LTD·Filed 1984·Granted Feb 13, 1990·17 cites·7 claims
- 3657US4366524AElectromechanical transducer controlling deviceHITACHI LTD·Filed 1980·Granted Dec 28, 1982·12 cites·12 claims
- 3757US4175506AElectric ignition control systemHITACHI LTD·Filed 1977·Granted Nov 27, 1979·14 cites·7 claims
- 3854US4882030AAir-fuel ratio detection system for engine exhaust gasHITACHI LTD·Filed 1988·Granted Nov 21, 1989·16 cites·21 claims
- 3952US4664773AAir-to-fuel ratio sensor for an automobileHITACHI LTD·Filed 1986·Granted May 12, 1987·14 cites·13 claims
- 4051US4837698AMethod of controlling air-fuel ratioHITACHI LTD·Filed 1987·Granted Jun 6, 1989·8 cites·19 claims
- 4150US4604899ASemiconductor-type pressure transducerHITACHI LTD·Filed 1984·Granted Aug 12, 1986·11 cites·6 claims
- 4250US4523284AMethod of controlling internal combustion engineHITACHI LTD·Filed 1980·Granted Jun 11, 1985·9 cites·45 claims
- 4350US4499880AAir-fuel ratio controlling apparatus for internal combustion engineHITACHI LTD·Filed 1982·Granted Feb 19, 1985·12 cites·3 claims
- 4449US4433650ASystem for controlling the starting operation of an internal combustion engineHITACHI LTD·Filed 1981·Granted Feb 28, 1984·10 cites·7 claims
- 4548US5676851AMethod of making a capacitance type acceleration sensorHITACHI LTD·Filed 1996·Granted Oct 14, 1997·11 cites·3 claims
- 4645US5001366AGate circuit of combined field-effect and bipolar transistorsHITACHI LTD·Filed 1987·Granted Mar 19, 1991·7 cites·3 claims
- 4745US4585962ASemiconductor switching device utilizing bipolar and MOS elementsHITACHI LTD·Filed 1983·Granted Apr 29, 1986·8 cites·9 claims
- 4844US4561056AElectronic control apparatus for internal combustion engineHITACHI LTD·Filed 1982·Granted Dec 24, 1985·5 cites·10 claims
- 4940US4100564APower transistor deviceHITACHI LTD·Filed 1976·Granted Jul 11, 1978·4 cites·4 claims
- 5036US4150643ACar exhaust gas purification device controlling circuitHITACHI LTD·Filed 1977·Granted Apr 24, 1979·3 cites·6 claims
Showing the top 50 of 54 patent records by PatentIndex Score.
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