Inventor · disambiguated record
Akira Uchikawa
Also filed as: UCHIKAWA AKIRA
47 granted patents·7 pending applications·1,039 citations·filing 1987–2010
99Inventor score
Top patents by PatentIndex Score
54 records- 0195US4935046AManufacture of a quartz glass vessel for the growth of single crystal semiconductorSHINETSU HANDOTAI KK·Filed 1988·Granted Jun 19, 1990·91 cites·10 claims
- 0294US5992514AHeat exchanger having several exchanging portionsDENSO CORP·Filed 1998·Granted Nov 30, 1999·79 cites·50 claims
- 0392US4956208AManufacture of a quartz glass vessel for the growth of single crystal semiconductorSHINETSU HANDOTAI KK·Filed 1989·Granted Sep 11, 1990·79 cites·4 claims
- 0490US6357521B1Heat exchanger having header tankDENSO CORP·Filed 2000·Granted Mar 19, 2002·38 cites·24 claims
- 0590US5568725AApparatus and method for controlling the air-fuel ratio of an internal combustion engineUNISIA JECS CORP·Filed 1994·Granted Oct 29, 1996·50 cites·14 claims
- 0688US5549080AApparatus and method for diagnosing occurrence of failure in variable valve timing control system for internal combustion engineUNISIA JECS CORP·Filed 1995·Granted Aug 27, 1996·55 cites·21 claims
- 0787US4915080AElectronic air-fuel ratio control apparatus in internal combustion engineJAPAN ELECTRONIC CONTROL SYST·Filed 1988·Granted Apr 10, 1990·32 cites·11 claims
- 0884US6305465B1Double heat exchanger having condenser core and radiator coreDENSO CORP·Filed 1999·Granted Oct 23, 2001·47 cites·2 claims
- 0983US5533332AMethod and apparatus for self diagnosis of an internal combustion engineUNISIA JECS CORP·Filed 1994·Granted Jul 9, 1996·62 cites·13 claims
- 1079US6167946B1Heat exchanger mounted to vehicleDENSO CORP·Filed 2000·Granted Jan 2, 2001·19 cites·15 claims
- 1177US7370545B2Oxygen sensorHITACHI LTD·Filed 2006·Granted May 13, 2008·5 cites·10 claims
- 1273US6595272B1Double heat exchanger having condenser core and radiator coreDENSO CORP·Filed 2000·Granted Jul 22, 2003·14 cites·15 claims
- 1373US5450837AApparatus and method for controlling the air-fuel ratio of an internal combustion engineUNISIA JECS CORP·Filed 1994·Granted Sep 19, 1995·25 cites·12 claims
- 1471US5641354APuller cellSEH AMERICA INC·Filed 1995·Granted Jun 24, 1997·31 cites·13 claims
- 1571US5582157AFuel property detecting apparatus for internal combustion enginesUNISIA JECS CORP·Filed 1995·Granted Dec 10, 1996·28 cites·6 claims
- 1668US7302828B2Oxygen sensorHITACHI LTD·Filed 2005·Granted Dec 4, 2007·2 cites·12 claims
- 1768US5870688AMisfire diagnostic system for internal combustion engineUNISIA JECS CORP·Filed 1996·Granted Feb 9, 1999·25 cites·9 claims
- 1867US6173765B1Heat exchange having header tankDENSO CORP·Filed 2000·Granted Jan 16, 2001·15 cites·13 claims
- 1965US7704358B2Oxygen sensorHITACHI LTD·Filed 2007·Granted Apr 27, 2010·2 cites·16 claims
- 2064US6228165B1Method of manufacturing crystal of silicon using an electric potentialSEH AMERICA INC·Filed 1999·Granted May 8, 2001·18 cites·19 claims
- 2162US6523603B2Double heat exchanger with condenser and radiatorDENSO CORP·Filed 2001·Granted Feb 25, 2003·11 cites·8 claims
- 2262US6523605B2Heat exchanger made of an aluminum alloyFURUKAWA ELECTRIC CO LTD·Filed 2001·Granted Feb 25, 2003·8 cites·8 claims
- 2361US5787977AHeat exchangerNIPPON DENSO CO·Filed 1993·Granted Aug 4, 1998·29 cites·13 claims
- 2459US5006221AOxygen concentration-detecting apparatusJAPAN ELECTRONIC CONTROL SYST·Filed 1989·Granted Apr 9, 1991·22 cites·18 claims
- 2557US6206089B1Heat exchanger and method for manufacturing the sameDENSO CORP·Filed 1997·Granted Mar 27, 2001·20 cites·20 claims
- 2657US5970967AMethod and apparatus for diagnosing an abnormality in a wide range air-fuel ratio sensorUNISIA JECS CORP·Filed 1997·Granted Oct 26, 1999·25 cites·8 claims
- 2756US5969230ASystem and method for estimating the temperature of oxygen sensor installed in exhaust system of internal combustion engineUNISIA JECS CORP·Filed 1997·Granted Oct 19, 1999·17 cites·8 claims
- 2856US5619852AAir/fuel ratio control system for internal combustion engineUNISIA JECS CORP·Filed 1995·Granted Apr 15, 1997·17 cites·4 claims
- 2956US4878473AInternal combustion engine with electronic air-fuel ratio control apparatusJAPAN ELECTRONIC CONTROL SYST·Filed 1988·Granted Nov 7, 1989·11 cites·18 claims
- 3054US4957705AOxygen gas concentration-detecting apparatusJAPAN ELECTRONIC CONTROL SYST·Filed 1987·Granted Sep 18, 1990·15 cites·14 claims
- 3153US6023964AMisfire diagnosis method and apparatus of internal combustion engineUNISIA JECS CORP·Filed 1998·Granted Feb 15, 2000·17 cites·6 claims
- 3252US4773376AOxygen gas concentration-detecting apparatus and air-fuel ratio-controlling apparatus using same in internal combustion engineJAPAN ELECTRONIC CONTROL SYST·Filed 1987·Granted Sep 27, 1988·17 cites·21 claims
- 3351US5598702AMethod and apparatus for controlling the air-fuel ratio of an internal combustion engineUNISIA JECS CORP·Filed 1995·Granted Feb 4, 1997·15 cites·12 claims
- 3450US6276447B1Apparatus formed by brazing and method for manufacturing the sameDENSO CORP·Filed 1999·Granted Aug 21, 2001·15 cites·8 claims
- 3549US6186222B1Aluminum alloy tube and heat exchanger, and method of metal-spraying a filler alloyFURUKAWA ELECTRIC CO LTD·Filed 1998·Granted Feb 13, 2001·14 cites·13 claims
- 3647US5778866AAir-fuel ratio detecting system of internal combustion engineUNISIA JECS CORP·Filed 1997·Granted Jul 14, 1998·12 cites·5 claims
- 3747US2007215471A1Exhaust gas sensorHITACHI LTD·Filed 2007·Application pending·0 cites
- 3846US4854288AAir-fuel ratio control apparatus in internal combustion engineJAPAN ELECTRONIC CONTROL SYST·Filed 1988·Granted Aug 8, 1989·7 cites·11 claims
- 3945US2007084725A1Oxygen sensorHITACHI LTD·Filed 2006·Application pending·0 cites
- 4045US2008116071A1Oxygen Sensor Degradation Judging DeviceHITACHI LTD·Filed 2006·Application pending·0 cites
- 4145US2007108051A1Oxygen sensorHITACHI LTD·Filed 2006·Application pending·0 cites
- 4244US2006272944A1Oxygen sensorHITACHI LTD·Filed 2006·Application pending·0 cites
- 4342US6161376AMethod and apparatus for controlling air-fuel ratio of internal combustion engineUNISIA JECS CORP·Filed 1998·Granted Dec 19, 2000·9 cites·6 claims
- 4440US5728932AMethod for diagnosing performance of intake air amount detection device and apparatus thereofUNISIA JECS CORP·Filed 1996·Granted Mar 17, 1998·9 cites·21 claims
- 4538US2009312938A1Gas sensor, oxygen sensor and air-fuel ratio control systemHITACHI LTD·Filed 2009·Application pending·0 cites
- 4637US6269541B1Method of manufacturing a heat exchangerDENSO CORP·Filed 1999·Granted Aug 7, 2001·9 cites·5 claims
- 4736US6953080B2Front end structure of vehicle preventing short-circuit of cooling airDENSO CORP·Filed 2002·Granted Oct 11, 2005·0 cites·3 claims
- 4836US5505184AMethod and apparatus for controlling the air-fuel ratio of an internal combustion engineUNISIA JECS CORP·Filed 1995·Granted Apr 9, 1996·6 cites·10 claims
- 4936US2010236925A1Ceramic structure and gas sensor including the ceramic structureHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2010·Application pending·0 cites
- 5035US5671720AApparatus and method for controlling air-fuel ratio of an internal combustion engineUNISIA JECS CORP·Filed 1996·Granted Sep 30, 1997·5 cites·20 claims
Showing the top 50 of 54 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →