Inventor · disambiguated record

Hirofumi Ohuchi

Also filed as: OHUCHI HIROFUMI

59 granted patents·1,223 citations·filing 1990–2001

99Inventor score

Technology areasF02D F01N F02M Y02T F01L

Files withMITSUBISHI ELECTRIC CORP59

Top patents by PatentIndex Score

59 records

0189US5488938AFault detecting apparatus for exhaust gas recirculation control system of internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 1995·Granted Feb 6, 1996·55 cites·72 claims
0288US6532940B1Fuel injection control system for cylinder injection type internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 2000·Granted Mar 18, 2003·35 cites·6 claims
0386US6196173B1Valve timing control system for internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 1999·Granted Mar 6, 2001·49 cites·12 claims
0484US6494173B2Valve timing control system for internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 2001·Granted Dec 17, 2002·22 cites·6 claims
0583US5257610ATroubleshooting system for exhaust gas recirculation controllerMITSUBISHI ELECTRIC CORP·Filed 1992·Granted Nov 2, 1993·42 cites·12 claims
0682US6513488B2Fuel injection control apparatus for direct injection type internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 2001·Granted Feb 4, 2003·25 cites·3 claims
0782US5363647ADual-sensor type air fuel ratio control system for internal combustion engine and catalytic converter diagnosis apparatus for the sameMITSUBISHI ELECTRIC CORP·Filed 1993·Granted Nov 15, 1994·24 cites·6 claims
0881US6170459B1Fuel injection control assembly for a cylinder-injected engineMITSUBISHI ELECTRIC CORP·Filed 2000·Granted Jan 9, 2001·27 cites·12 claims
0979US6513322B2Device for controlling the rise of the catalyst temperature in an internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 2001·Granted Feb 4, 2003·21 cites·8 claims
1079US5501201AFlow quantity valve controller and manufacturing method for flow quantity valveMITSUBISHI ELECTRIC CORP·Filed 1995·Granted Mar 26, 1996·36 cites·28 claims
1179US5327873AMalfunction sensing apparatus for a fuel vapor control systemMITSUBISHI ELECTRIC CORP·Filed 1993·Granted Jul 12, 1994·34 cites·10 claims
1278US6446602B1Cylinder identifying system for internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 2001·Granted Sep 10, 2002·17 cites·13 claims
1378US5947077AControl device for cylinder injection internal-combustion engineMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Sep 7, 1999·34 cites·20 claims
1477US5794585ACylinder injection fuel control device for an internal-combustion engineMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Aug 18, 1998·32 cites·5 claims
1576US6212884B1Device for controlling the rise of the catalyst temperature in an internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 1999·Granted Apr 10, 2001·28 cites·10 claims
1676US5640846ADual-sensor type air-fuel ratio control system for internal combustion engine and catalytic converter diagnosis apparatus for the sameMITSUBISHI ELECTRIC CORP·Filed 1995·Granted Jun 24, 1997·28 cites·5 claims
1775US6345498B2Exhaust gas purifier for internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 1999·Granted Feb 12, 2002·41 cites·4 claims
1875US5519992AExhaust gas purification system for internal combustion engine, and apparatus and method for controlling the sameMITSUBISHI ELECTRIC CORP·Filed 1994·Granted May 28, 1996·37 cites·7 claims
1975US5152273AExhaust gas recirculation control device and its failure diagnosis deviceMITSUBISHI ELECTRIC CORP·Filed 1991·Granted Oct 6, 1992·31 cites·6 claims
2073US5560202AExhaust gas cleaner system for an internal combustion engine with catalytic converter supplied with secondary airMITSUBISHI ELECTRIC CORP·Filed 1995·Granted Oct 1, 1996·18 cites·4 claims
2173US5517848AExhaust gas purification system for internal combustion engine, and apparatus and method for controlling the sameMITSUBISHI ELECTRIC CORP·Filed 1995·Granted May 21, 1996·32 cites·7 claims
2271US6279537B1Air fuel ratio control apparatus for an internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 1999·Granted Aug 28, 2001·27 cites·12 claims
2370US6601115B1Communication protocol converter system and monitor deviceMITSUBISHI ELECTRIC CORP·Filed 2000·Granted Jul 29, 2003·15 cites·16 claims
2469US6076502AExhaust gas recirculation control system for internal combustion enginesMITSUBISHI ELECTRIC CORP·Filed 1998·Granted Jun 20, 2000·26 cites·13 claims
2569US5438827ADual-sensor type air-fuel ratio control system for internal combustion engine and catalytic diagnosis apparatus for the sameMITSUBISHI ELECTRIC CORP·Filed 1994·Granted Aug 8, 1995·24 cites·2 claims
2669US5426937ADual-sensor type air-fuel ratio control system for internal combustion engine and catalytic converter diagnosis apparatus for the sameMITSUBISHI ELECTRIC CORP·Filed 1994·Granted Jun 27, 1995·24 cites·10 claims
2768US6318152B1Fuel property judgement device for internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 1999·Granted Nov 20, 2001·28 cites·9 claims
2867US6073611AControl apparatus for internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 1998·Granted Jun 13, 2000·39 cites·20 claims
2967US5503131AStepping motor driving apparatus and exhaust gas recirculation control system using the sameMITSUBISHI ELECTRIC CORP·Filed 1994·Granted Apr 2, 1996·25 cites·11 claims
3066US6454676B1Control system for internal combustion engine equipped with automatic transmissionMITSUBISHI ELECTRIC CORP·Filed 2000·Granted Sep 24, 2002·19 cites·14 claims
3166US5154156AFailure diagnosis device of an exhaust gas recirculation control deviceMITSUBISHI ELECTRIC CORP·Filed 1991·Granted Oct 13, 1992·22 cites·2 claims
3261US5054446AIdle revolution speed control apparatus for an internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 1991·Granted Oct 8, 1991·17 cites·3 claims
3359US6499450B2Valve timing control system for internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 2001·Granted Dec 31, 2002·7 cites·7 claims
3459US5591905ADeterioration detecting apparatus for catalytic converterMITSUBISHI ELECTRIC CORP·Filed 1995·Granted Jan 7, 1997·24 cites·8 claims
3557US6176227B1Control system for cylinder injection type internal combustion engine with exhaust gas recirculation feedback controlMITSUBISHI ELECTRIC CORP·Filed 1999·Granted Jan 23, 2001·27 cites·11 claims
3656US6591184B2Cylinder identifying system for internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 2001·Granted Jul 8, 2003·9 cites·9 claims
3756US5417061ADevice for detecting catalyst deterioration for an internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 1994·Granted May 23, 1995·16 cites·3 claims
3853US5251599AInternal combustion engine control device having exhaust gas recycle systemMITSUBISHI ELECTRIC CORP·Filed 1992·Granted Oct 12, 1993·13 cites·4 claims
3952US6213067B1Control device for internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 1999·Granted Apr 10, 2001·14 cites·5 claims
4052US5417099AAir-fuel ratio sensor trouble detecting apparatusMITSUBISHI ELECTRIC CORP·Filed 1994·Granted May 23, 1995·16 cites·16 claims
4151US6227163B1Fuel injection control system for cylinder injection type internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 2000·Granted May 8, 2001·10 cites·6 claims
4251US5056483AEngine speed control apparatusMITSUBISHI ELECTRIC CORP·Filed 1990·Granted Oct 15, 1991·12 cites·2 claims
4350US5425234ADual-sensor type air-fuel ratio control system for internal combustion engine and catalytic converter diagnosis apparatus for the sameMITSUBISHI ELECTRIC CORP·Filed 1994·Granted Jun 20, 1995·13 cites·3 claims
4449US6474307B1Fuel injection control device for internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 2000·Granted Nov 5, 2002·6 cites·4 claims
4549US5459999AExhaust gas cleaner system for an internal combustion engine with catalytic converter supplied with secondary airMITSUBISHI ELECTRIC CORP·Filed 1994·Granted Oct 24, 1995·15 cites·3 claims
4646US5257534AFault diagnosis device for an exhaust gas recycle control unitMITSUBISHI ELECTRIC CORP·Filed 1992·Granted Nov 2, 1993·10 cites·6 claims
4745US5184595ADisorder diagnosis device for fuel injection apparatusMITSUBISHI ELECTRIC CORP·Filed 1992·Granted Feb 9, 1993·10 cites·5 claims
4844US5024196AIdle speed adjusting system for internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 1990·Granted Jun 18, 1991·9 cites·3 claims
4942US6240894B1Control system for cylinder injection type internal combustion engineMITSUBISHI ELECTRIC CORP·Filed 1999·Granted Jun 5, 2001·8 cites·12 claims
5041US6092505AEngine controlling apparatus for an automotive engineMITSUBISHI ELECTRIC CORP·Filed 1998·Granted Jul 25, 2000·9 cites·14 claims

Showing the top 50 of 59 patent records by PatentIndex Score.

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