Inventor
TOMISAWA NAOKI
JP77 patents
⚠️ This page may combine multiple inventors who share the name “TOMISAWA NAOKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
UNISIA JECS CORP
37 patentsUS5850458ADec 15, 1998
Apparatus and method for actively reducing noise in vehicular passengers compartment
UNISIA JECS CORP87 citations96
US5606855AMar 4, 1997
Apparatus and method for estimating the temperature of an automotive catalytic converter
UNISIA JECS CORP61 citations96
US5542394AAug 6, 1996
Vehicle engine refueling detection apparatus and method and fuel supply apparatus and method
UNISIA JECS CORP85 citations96
US5992373ANov 30, 1999
Apparatus and method for controlling fuel injection of direct injection gasoline internal combustion engine
UNISIA JECS CORP20 citations93
US5701868ADec 30, 1997
Method and apparatus for controlling the ignition timing of an internal combustion engine
UNISIA JECS CORP21 citations93
US5698776ADec 16, 1997
Method and apparatus for detecting combustion conditions of an internal combustion engine, and engine control method using the detection method, and engine control apparatus using the detection apparatus
UNISIA JECS CORP26 citations93
US5682856ANov 4, 1997
Apparatus for controlling an internal combustion engine and method thereof
UNISIA JECS CORP32 citations93
US5664544ASep 9, 1997
Apparatus and method for control of an internal combustion engine
UNISIA JECS CORP19 citations93
US5631412AMay 20, 1997
Apparatus and method for estimating atmospheric pressure in an internal combustion engine
UNISIA JECS CORP21 citations93
US5611311AMar 18, 1997
Crank angle sensing system
UNISIA JECS CORP54 citations93
US5586537ADec 24, 1996
Fuel property detecting apparatus for internal combustion engines
UNISIA JECS CORP48 citations93
US5560340AOct 1, 1996
Fuel-supply system for internal combustion engines
UNISIA JECS CORP22 citations93
US5553573ASep 10, 1996
Valve duration control system for four-cycle engine
UNISIA JECS CORP42 citations93
US5507180AApr 16, 1996
Apparatus and method for detecting rough road travel of a vehicle, and apparatus and method for detecting misfire of a vehicle engine
UNISIA JECS CORP24 citations93
US5499607AMar 19, 1996
Fuel characteristic detecting system for internal combustion engine
UNISIA JECS CORP38 citations93
US5469827ANov 28, 1995
Method and apparatus for control of the start-up air-fuel ratio of an internal combustion engine
UNISIA JECS CORP26 citations93
US5458102AOct 17, 1995
Air fuel ratio control system
UNISIA JECS CORP30 citations93
US5445124AAug 29, 1995
Method and apparatus for controlling the idle speed of an internal combustion engine
UNISIA JECS CORP21 citations93
US5635635AJun 3, 1997
Method and apparatus for detecting the intake air quantity of an engine
UNISIA JECS CORP45 citations89
US5599254AFeb 4, 1997
Method and apparatus for diagnosing a fault in a lock-up mechanism of a torque converter fitted to an automatic transmission
UNISIA JECS CORP21 citations89
US5850811ADec 22, 1998
Apparatus for controlling timings of exhaust valves and method thereof
UNISIA JECS CORP28 citations86
US5747677AMay 5, 1998
Apparatus and method for detecting pressure in an engine cylinder
UNISIA JECS CORP18 citations84
US5617833AApr 8, 1997
Apparatus and method for diagnosing exhaust recirculation system in internal combustion engine
UNISIA JECS CORP18 citations84
US5429098AJul 4, 1995
Method and apparatus for controlling the treatment of fuel vapor of an internal combustion engine
UNISIA JECS CORP19 citations82
US6453720B1Sep 24, 2002
Activation diagnosis method and activation diagnosis apparatus for air-fuel ratio sensor
UNISIA JECS CORP11 citations74
US5670715ASep 23, 1997
Method of diagnosing a mechanism for improving combustion in an internal combustion engine and apparatus therefor
UNISIA JECS CORP11 citations74
US5634451AJun 3, 1997
Apparatus and method for treating fuel vapor of an engine
UNISIA JECS CORP13 citations74
US5590633AJan 7, 1997
Fuel injection control system for engine
UNISIA JECS CORP7 citations74
US5584276ADec 17, 1996
Ignition timing controlling apparatus and method for internal combustion engine with exhaust gas purification catalytic converter
UNISIA JECS CORP12 citations74
US5579737ADec 3, 1996
Method and apparatus for electronically controlling a fuel supply to an internal combustion engine
UNISIA JECS CORP10 citations74
US5537978AJul 23, 1996
Apparatus and method for determining characteristic of fuel supplied to vehicular internal combustion engine
UNISIA JECS CORP12 citations74
US5421305AJun 6, 1995
Method and apparatus for control of a fuel quantity increase correction amount for an internal combustion engine, and method and apparatus for detection of the engine surge-torque
UNISIA JECS CORP10 citations74
US5408981AApr 25, 1995
Apparatus and method for controlling air/fuel mixture ratio in feedback control mode for internal combustion engine
UNISIA JECS CORP14 citations74
US5394849AMar 7, 1995
Method of and an apparatus for controlling the quantity of fuel supplied to an internal combustion engine
UNISIA JECS CORP15 citations74
US5375574ADec 27, 1994
Engine idling speed control apparatus
UNISIA JECS CORP15 citations74
US5363831ANov 15, 1994
Method of and an apparatus for carrying out feedback control on an air-fuel ratio in an internal combustion engine
UNISIA JECS CORP19 citations74
US5359980ANov 1, 1994
Apparatus for controlling fuel delivery to engine associated with evaporated fuel purging unit
UNISIA JECS CORP10 citations74
JAPAN ELECTRONIC CONTROL SYST
13 patentsUS5353764AOct 11, 1994
Electronically controlled fuel supply method and device for internal combustion engine
JAPAN ELECTRONIC CONTROL SYST20 citations93
US5182710AJan 26, 1993
Driving condition recognition system for an automotive vehicle and shift control system for an automotive automatic power transmission utilizing the results of vehicular driving state recognition
JAPAN ELECTRONIC CONTROL SYST41 citations93
US5103791AApr 14, 1992
Fuel supply control system for internal combustion engine with feature of exhaust temperature responsive enrichment
JAPAN ELECTRONIC CONTROL SYST32 citations93
US4881505ANov 21, 1989
Electronic learning control apparatus for internal combustion engine
JAPAN ELECTRONIC CONTROL SYST24 citations93
US4715344ADec 29, 1987
Learning and control apparatus for electronically controlled internal combustion engine
JAPAN ELECTRONIC CONTROL SYST37 citations93
US4615319AOct 7, 1986
Apparatus for learning control of air-fuel ratio of airfuel mixture in electronically controlled fuel injection type internal combustion engine
JAPAN ELECTRONIC CONTROL SYST29 citations93
US4655188AApr 7, 1987
Apparatus for learning control of air-fuel ratio of air-fuel mixture in electronically controlled fuel injection type internal combustion engine
JAPAN ELECTRONIC CONTROL SYST28 citations92
US4729359AMar 8, 1988
Learning and control apparatus for electronically controlled internal combustion engine
JAPAN ELECTRONIC CONTROL SYST33 citations87
US4875456AOct 24, 1989
Self-diagnosis system for auxiliary air control system of internal combustion engine
JAPAN ELECTRONIC CONTROL SYST21 citations82
US5343745ASep 6, 1994
Apparatus and method for detecting intake air quantity for internal combustion engine
JAPAN ELECTRONIC CONTROL SYST9 citations74
US5044196ASep 3, 1991
Method and apparatus for detecting deterioration of a hot-wire type sucked air flow quantity-detecting device for an engine
JAPAN ELECTRONIC CONTROL SYST7 citations74
US5014548AMay 14, 1991
Method and apparatus for detecting deterioration of sucked air flow quantity-detecting device of engine
JAPAN ELECTRONIC CONTROL SYST7 citations74
US4957083ASep 18, 1990
Fuel supply control system for internal combustion engine with feature providing engine stability in low engine load condition
JAPAN ELECTRONIC CONTROL SYST18 citations74
Showing the top 50 of 77 patents by PatentIndex Score.