Keiji Wakahara

Person

Kariya-city, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Waste heat recovery structure for steel making electric arc furnace...
- Patent number 9,157,336
- Issue date Oct 13, 2015
- JP STEEL PLANTECH CO.
- Keiji Wakahara
- C21 - METALLURGY OF IRON
Information Patent Grant
Leak check for fuel vapor purge system
- Patent number RE41823
- Issue date Oct 19, 2010
- Denso Corporation
- Makoto Miwa
- 123 - Internal-combustion engines
Information Patent Grant
Abnormality diagnosis apparatus for secondary air supply system of...
- Patent number 7,797,924
- Issue date Sep 21, 2010
- Denso Corporation
- Keiji Wakahara
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Fuel vapor control system with leak check
- Patent number RE41660
- Issue date Sep 14, 2010
- Denso Corporation
- Syujiro Morinaga
- 073 - Measuring and testing
Information Patent Grant
Controller, cooling system abnormality diagnosis device and block h...
- Patent number 7,757,649
- Issue date Jul 20, 2010
- Denso Corporation
- Keiji Wakahara
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Method for detecting malfunction of a cooling system based on detec...
- Patent number 7,743,651
- Issue date Jun 29, 2010
- Denso Corporation
- Keiji Wakahara
- G01 - MEASURING TESTING
Information Patent Grant
Engine control apparatus
- Patent number 7,483,781
- Issue date Jan 27, 2009
- Denso Corporation
- Keiji Wakahara
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Apparatus for estimating air-fuel ratios and apparatus for controll...
- Patent number 7,409,284
- Issue date Aug 5, 2008
- Denso Corporation
- Akihiro Okamoto
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Vehicular anomaly diagnosis system
- Patent number 7,397,148
- Issue date Jul 8, 2008
- Denso Corporation
- Takeshi Fujimoto
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Method for detecting malfunction of a cooling system based on detec...
- Patent number 7,363,804
- Issue date Apr 29, 2008
- Denso Corporation
- Keiji Wakahara
- G01 - MEASURING TESTING
Information Patent Grant
Air-fuel ratio controller for internal combustion engine
- Patent number 7,356,985
- Issue date Apr 15, 2008
- DENSO CORPORATION
- Yasuo Hirata
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Device for detecting malfunction in evaporated gas purging system
- Patent number 7,316,223
- Issue date Jan 8, 2008
- DENSO CORPORATION
- Keiji Wakahara
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Diagnostic device for secondary air supply system
- Patent number 7,260,928
- Issue date Aug 28, 2007
- DENSO CORPORATION
- Keiji Wakahara
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Abnormality diagnosis apparatus and engine cooling system having th...
- Patent number 7,168,399
- Issue date Jan 30, 2007
- Denso Corporation
- Keiji Wakahara
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Diagnostic apparatus for variable valve control system
- Patent number 7,146,851
- Issue date Dec 12, 2006
- Denso Corporation
- Keiji Wakahara
- G01 - MEASURING TESTING
Information Patent Grant
Leak-check apparatus of fuel-vapor-processing system, fuel-temperat...
- Patent number 7,140,241
- Issue date Nov 28, 2006
- Denso Corporation
- Keiji Wakahara
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Thermostat malfunction detecting system for engine cooling system
- Patent number 7,137,295
- Issue date Nov 21, 2006
- Denso Corporation
- Keiji Wakahara
- G01 - MEASURING TESTING
Information Patent Grant
Thermostat malfunction detecting system for engine cooling system
- Patent number 7,047,799
- Issue date May 23, 2006
- Denso Corporation
- Keiji Wakahara
- G01 - MEASURING TESTING
Information Patent Grant
Thermostat malfunction detecting system for engine cooling system
- Patent number 7,024,926
- Issue date Apr 11, 2006
- Denso Corporation
- Keiji Wakahara
- G01 - MEASURING TESTING
Information Patent Grant
Thermostat malfunction detecting system for engine cooling system
- Patent number 7,010,967
- Issue date Mar 14, 2006
- Denso Corporation
- Keiji Wakahara
- G01 - MEASURING TESTING
Information Patent Grant
Misfire detector for an internal combustion engine
- Patent number 6,968,268
- Issue date Nov 22, 2005
- Denso Corporation
- Jun Yamada
- G01 - MEASURING TESTING
Information Patent Grant
Thermostat malfunction detecting system for engine cooling system
- Patent number 6,957,570
- Issue date Oct 25, 2005
- Denso Corporation
- Keiji Wakahara
- G01 - MEASURING TESTING
Information Patent Grant
Abnormality diagnosing apparatus for vehicle
- Patent number 6,904,792
- Issue date Jun 14, 2005
- Denso Corporation
- Keiji Wakahara
- G01 - MEASURING TESTING
Information Patent Grant
Emission control system with catalyst warm-up speeding control
- Patent number 6,898,927
- Issue date May 31, 2005
- Denso Corporation
- Syujiro Morinaga
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Leak check for fuel vapor purge system
- Patent number 6,892,712
- Issue date May 17, 2005
- Denso Corporation
- Makoto Miwa
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Fuel vapor handling system
- Patent number 6,854,452
- Issue date Feb 15, 2005
- Denso Corporation
- Syujiro Morinaga
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Fuel vapor control system with leak check
- Patent number 6,832,509
- Issue date Dec 21, 2004
- Denso Corporation
- Syujiro Morinaga
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Leak-check apparatus of fuel-vapor-processing system, fuel-temperat...
- Patent number 6,807,851
- Issue date Oct 26, 2004
- Denso Corporation
- Keiji Wakahara
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Thermostat malfunction detecting system for engine cooling system
- Patent number 6,725,710
- Issue date Apr 27, 2004
- Denso Corporation
- Tatsuya Oka
- G01 - MEASURING TESTING
Information Patent Grant
Thermostat malfunction detecting system for engine cooling system
- Patent number 6,679,110
- Issue date Jan 20, 2004
- Denso Corporation
- Tatsuya Oka
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
WASTE HEAT RECOVERY STRUCTURE FOR STEEL MAKING ELECTRIC ARC FURNACE...
- Publication number 20120320941
- Publication date Dec 20, 2012
- JP STEEL PLANTECH CO.
- Keiji Wakahara
- C21 - METALLURGY OF IRON
Information Patent Application
ERROR DETECTION APPARATUS FOR NOx SENSOR AND EXHAUST GAS CLEANING S...
- Publication number 20090165543
- Publication date Jul 2, 2009
- DENSO CORPORATION
- Keiji WAKAHARA
- G01 - MEASURING TESTING
Information Patent Application
CONTROLLER, COOLING SYSTEM ABNORMALITY DIAGNOSIS DEVICE AND BLOCK H...
- Publication number 20080300774
- Publication date Dec 4, 2008
- DENSO CORPORATION
- Keiji Wakahara
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Method for detecting malfunction of a cooling system based on detec...
- Publication number 20080202452
- Publication date Aug 28, 2008
- DENSO CORPORATION
- Keiji Wakahara
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
ENGINE CONTROL APPARATUS
- Publication number 20080110447
- Publication date May 15, 2008
- DENSO CORPORATION
- Keiji Wakahara
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Apparatus for estimating air-fuel ratios and apparatus for controll...
- Publication number 20070175462
- Publication date Aug 2, 2007
- DENSO CORPORATION
- Akihiro Okamoto
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
Thermostat malfunction detecting system for engine cooling system
- Publication number 20070033998
- Publication date Feb 15, 2007
- DENSO CORPORATION
- Keiji Wakahara
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Air-fuel ratio controller for internal combustion engine
- Publication number 20070017210
- Publication date Jan 25, 2007
- DENSO CORPORATION
- Yasuo Hirata
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
Device for detecting malfunction in evaporated gas purging system
- Publication number 20060272400
- Publication date Dec 7, 2006
- DENSO CORPORATION
- Keiji Wakahara
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
Abnormality diagnosis apparatus for secondary air supply system of...
- Publication number 20060090455
- Publication date May 4, 2006
- DENSO CORPORATION
- Keiji Wakahara
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Diagnostic device for secondary air supply system
- Publication number 20060059898
- Publication date Mar 23, 2006
- DENSO CORPORATION
- Keiji Wakahara
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Diagnostic apparatus for variable valve control system
- Publication number 20050204805
- Publication date Sep 22, 2005
- DENSO CORPORATION
- Keiji Wakahara
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Apparatus for estimating air-fuel ratios and apparatus for controll...
- Publication number 20050161033
- Publication date Jul 28, 2005
- DENSO CORPORATION
- Akihiro Okamoto
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
Thermostat malfunction detecting system for engine cooling system
- Publication number 20050097946
- Publication date May 12, 2005
- DENSO CORPORATION
- Keiji Wakahara
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Thermostat malfunction detecting system for engine cooling system
- Publication number 20050102093
- Publication date May 12, 2005
- DENSO CORPORATION
- Keiji Wakahara
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Thermostat malfunction detecting system for engine cooling system
- Publication number 20050087152
- Publication date Apr 28, 2005
- DENSO CORPORATION
- Keiji Wakahara
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Leak-check apparatus of fuel-vapor-processing system, fuel-temperat...
- Publication number 20050039525
- Publication date Feb 24, 2005
- DENSO CORPORATION
- Keiji Wakahara
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
Misfire detector for an internal combustion engine
- Publication number 20040144165
- Publication date Jul 29, 2004
- Denso Corporation
- Jun Yamada
- G01 - MEASURING TESTING
Information Patent Application
Vehicular anomaly diagnosis system
- Publication number 20040099233
- Publication date May 27, 2004
- Denso Corporation
- Takeshi Fujimoto
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Abnormality diagnosis apparatus and engine cooling system having th...
- Publication number 20040035194
- Publication date Feb 26, 2004
- DENSO CORPORATION
- Keiji Wakahara
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Device for detecting canister deterioration
- Publication number 20030183206
- Publication date Oct 2, 2003
- DENSO Corporation
- Takeshi Fujimoto
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
Thermostat malfunction detecting system for engine cooling system
- Publication number 20030131659
- Publication date Jul 17, 2003
- DENSO Corporation
- Tatsuya Oka
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Abnormality diagnosing apparatus for vehicle
- Publication number 20030121316
- Publication date Jul 3, 2003
- Keiji Wakahara
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Fuel vapor handling system
- Publication number 20030075156
- Publication date Apr 24, 2003
- Syujiro Morinaga
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
Emission control system with catalyst warm-up speeding control
- Publication number 20030070423
- Publication date Apr 17, 2003
- Syujiro Morinaga
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Leak check for fuel vapor purge system
- Publication number 20030056573
- Publication date Mar 27, 2003
- Makoto Miwa
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
Fuel vapor control system with leak check
- Publication number 20030051540
- Publication date Mar 20, 2003
- Syujiro Morinaga
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
Leak-check apparatus of fuel-vapor-processing system, fuel-temperat...
- Publication number 20030019286
- Publication date Jan 30, 2003
- Keiji Wakahara
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
Device for detecting canister deterioration
- Publication number 20020112703
- Publication date Aug 22, 2002
- Takeshi Fujimoto
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
Coolant temperature estimation system for estimating termperature o...
- Publication number 20020111734
- Publication date Aug 15, 2002
- Keiji Wakahara
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES

Keiji Wakahara

Person

Patents Grantslast 30 patents

Waste heat recovery structure for steel making electric arc furnace...

Leak check for fuel vapor purge system

Abnormality diagnosis apparatus for secondary air supply system of...

Fuel vapor control system with leak check

Controller, cooling system abnormality diagnosis device and block h...

Method for detecting malfunction of a cooling system based on detec...

Engine control apparatus

Apparatus for estimating air-fuel ratios and apparatus for controll...

Vehicular anomaly diagnosis system

Method for detecting malfunction of a cooling system based on detec...

Air-fuel ratio controller for internal combustion engine

Device for detecting malfunction in evaporated gas purging system

Diagnostic device for secondary air supply system

Abnormality diagnosis apparatus and engine cooling system having th...

Diagnostic apparatus for variable valve control system

Leak-check apparatus of fuel-vapor-processing system, fuel-temperat...

Thermostat malfunction detecting system for engine cooling system

Thermostat malfunction detecting system for engine cooling system

Thermostat malfunction detecting system for engine cooling system

Thermostat malfunction detecting system for engine cooling system

Misfire detector for an internal combustion engine

Thermostat malfunction detecting system for engine cooling system

Abnormality diagnosing apparatus for vehicle

Emission control system with catalyst warm-up speeding control

Leak check for fuel vapor purge system

Fuel vapor handling system

Fuel vapor control system with leak check

Leak-check apparatus of fuel-vapor-processing system, fuel-temperat...

Thermostat malfunction detecting system for engine cooling system

Thermostat malfunction detecting system for engine cooling system

Patents Applicationslast 30 patents

WASTE HEAT RECOVERY STRUCTURE FOR STEEL MAKING ELECTRIC ARC FURNACE...

ERROR DETECTION APPARATUS FOR NOx SENSOR AND EXHAUST GAS CLEANING S...

CONTROLLER, COOLING SYSTEM ABNORMALITY DIAGNOSIS DEVICE AND BLOCK H...

Method for detecting malfunction of a cooling system based on detec...

ENGINE CONTROL APPARATUS

Apparatus for estimating air-fuel ratios and apparatus for controll...

Thermostat malfunction detecting system for engine cooling system

Air-fuel ratio controller for internal combustion engine

Device for detecting malfunction in evaporated gas purging system

Abnormality diagnosis apparatus for secondary air supply system of...

Diagnostic device for secondary air supply system

Diagnostic apparatus for variable valve control system

Apparatus for estimating air-fuel ratios and apparatus for controll...

Thermostat malfunction detecting system for engine cooling system

Thermostat malfunction detecting system for engine cooling system

Thermostat malfunction detecting system for engine cooling system

Leak-check apparatus of fuel-vapor-processing system, fuel-temperat...

Misfire detector for an internal combustion engine

Vehicular anomaly diagnosis system

Abnormality diagnosis apparatus and engine cooling system having th...

Device for detecting canister deterioration

Thermostat malfunction detecting system for engine cooling system

Abnormality diagnosing apparatus for vehicle

Fuel vapor handling system

Emission control system with catalyst warm-up speeding control

Leak check for fuel vapor purge system

Fuel vapor control system with leak check

Leak-check apparatus of fuel-vapor-processing system, fuel-temperat...

Device for detecting canister deterioration

Coolant temperature estimation system for estimating termperature o...