Inventor
OHKUMA SHIGEO
JP31 patents
⚠️ This page may combine multiple inventors who share the name “OHKUMA SHIGEO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
UNISIA JECS CORP
18 patentsUS6182642B1Feb 6, 2001
Leak detection of emission control system
UNISIA JECS CORP62 citations96
US5850458ADec 15, 1998
Apparatus and method for actively reducing noise in vehicular passengers compartment
UNISIA JECS CORP87 citations96
US6644017B2Nov 11, 2003
Device for and method of controlling air-fuel ratio of internal combustion engine
UNISIA JECS CORP34 citations92
US6571602B2Jun 3, 2003
Apparatus and method for detecting catalyst temperature
UNISIA JECS CORP20 citations92
US6453229B1Sep 17, 2002
Air-fuel ratio control device for internal combustion engine and method thereof
UNISIA JECS CORP32 citations92
US6389882B1May 21, 2002
Apparatus and method for diagnosing leakage in fuel vapor treatment apparatus
UNISIA JECS CORP28 citations92
US6321728B1Nov 27, 2001
Apparatus and method for diagnosing faults of fuel vapor treatment unit
UNISIA JECS CORP32 citations92
US5517073AMay 14, 1996
Pressure sensor
UNISIA JECS CORP45 citations92
US6712054B2Mar 30, 2004
Device and method for measuring element temperature of air-fuel ratio sensor, and device and method for controlling heater of air-fuel ratio sensor
UNISIA JECS CORP9 citations74
US6576118B2Jun 10, 2003
Correction device of air-fuel ratio detection apparatus
UNISIA JECS CORP8 citations74
US6450158B2Sep 17, 2002
Air-fuel ratio feedback control apparatus of internal combustion engine and method thereof
UNISIA JECS CORP12 citations74
US6176217B1Jan 23, 2001
Fuel vapor processing apparatus and method of internal combustion engine
UNISIA JECS CORP9 citations73
US6769422B2Aug 3, 2004
Apparatus and method for controlling air-fuel ratio of engine
UNISIA JECS CORP6 citations63
US6453895B2Sep 24, 2002
Feedback control device and feedback control method of air-fuel ratio in internal combustion engine
UNISIA JECS CORP4 citations63
US6450159B2Sep 17, 2002
Fuel vapor treatment apparatus in internal combustion engine and method thereof
UNISIA JECS CORP2 citations63
US6723965B2Apr 20, 2004
Heater control apparatus of air-fuel ratio sensor and method thereof
UNISIA JECS CORP3 citations56
US6609510B2Aug 26, 2003
Device and method for controlling air-fuel ratio of internal combustion engine
UNISIA JECS CORP0 citations42
US6453896B2Sep 24, 2002
Air-fuel ratio feedback control apparatus and method of internal combustion engine
UNISIA JECS CORP0 citations42
HITACHI LTD
6 patentsUS7017567B2Mar 28, 2006
Device and method for measuring element temperature of air-fuel ratio sensor, and device and method for controlling heater of air-fuel ratio sensor
HITACHI LTD14 citations84
US7836758B2Nov 23, 2010
Deterioration diagnosis system for an air-fuel ratio sensor
HITACHI LTD13 citations81
US6918385B2Jul 19, 2005
Air-fuel ratio detecting apparatus of engine and method thereof
HITACHI LTD8 citations72
US6976483B2Dec 20, 2005
Air-fuel ratio control apparatus for internal combustion engine and method thereof
HITACHI LTD2 citations63
US6973926B2Dec 13, 2005
Air-fuel ratio control apparatus for internal combustion engine and method thereof
HITACHI LTD5 citations63
US7146972B2Dec 12, 2006
Exhaust gas sensor activation judgment and air fuel ratio control system/method
HITACHI LTD0 citations42
NICHICON CORP
6 patentsUS10093193B2Oct 9, 2018
Charging system
NICHICON CORP10 citations76
US10040364B2Aug 7, 2018
Charging apparatus
NICHICON CORP4 citations72
US9007022B2Apr 14, 2015
Stationary charging system
NICHICON CORP4 citations68
US8994329B2Mar 31, 2015
Stationary charging system
NICHICON CORP5 citations68
US10343539B2Jul 9, 2019
Power supply device for supplying electricity to a load utilizing electric power of a storage-battery-equipped vehicle
NICHICON CORP0 citations36
US9124117B2Sep 1, 2015
Charging device
NICHICON CORP0 citations36