Inventor
HIROOKA SHIGEMASA
JP36 patents
⚠️ This page may combine multiple inventors who share the name “HIROOKA SHIGEMASA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOYOTA MOTOR CO LTD
31 patentsUS7610140B2Oct 27, 2009
Vehicular ejector system and control method thereof
TOYOTA MOTOR CO LTD34 citations92
US6945035B2Sep 20, 2005
Auxiliary air supplying system, and control methods and failure diagnostic methods thereof
TOYOTA MOTOR CO LTD32 citations92
US6918245B2Jul 19, 2005
Secondary air feeding apparatus and method of detecting abnormality in the apparatus
TOYOTA MOTOR CO LTD35 citations92
US6912845B2Jul 5, 2005
Internal combustion engine, control apparatus for internal combustion engine, and control method for internal combustion engine
TOYOTA MOTOR CO LTD23 citations92
US8360739B2Jan 29, 2013
Control apparatus and control method for negative pressure generating apparatus
TOYOTA MOTOR CO LTD9 citations84
US7848870B2Dec 7, 2010
Control apparatus and control method for negative pressure generating apparatus
TOYOTA MOTOR CO LTD15 citations84
US7650221B2Jan 19, 2010
Ejector system for vehicle
TOYOTA MOTOR CO LTD19 citations84
US7634348B2Dec 15, 2009
Ejector system for a vehicle and ejector system controller
TOYOTA MOTOR CO LTD16 citations84
US7627407B2Dec 1, 2009
Fault determination device and method of negative pressure generation device
TOYOTA MOTOR CO LTD18 citations84
US7107758B2Sep 19, 2006
Failure diagnosis apparatus for secondary air supplier
TOYOTA MOTOR CO LTD16 citations84
US7073323B2Jul 11, 2006
Secondary air supply apparatus and method for detecting abnormality thereof
TOYOTA MOTOR CO LTD11 citations84
US6978600B2Dec 27, 2005
Secondary air supply system and secondary air supply method
TOYOTA MOTOR CO LTD15 citations84
US6832474B2Dec 21, 2004
Exhaust gas purification device of internal combustion engine and method therefore
TOYOTA MOTOR CO LTD10 citations74
US10934920B2Mar 2, 2021
Exhaust purification system for internal combustion engine
TOYOTA MOTOR CO LTD4 citations73
US10895187B2Jan 19, 2021
Exhaust gas purification apparatus for internal combustion engine
TOYOTA MOTOR CO LTD2 citations73
US10072545B2Sep 11, 2018
Exhaust purification system of internal combustion engine
TOYOTA MOTOR CO LTD4 citations73
US11532945B2Dec 20, 2022
Control device for vehicle
TOYOTA MOTOR CO LTD2 citations72
US11293326B2Apr 5, 2022
Exhaust gas purifying device for internal combustion engine
TOYOTA MOTOR CO LTD2 citations72
US11306640B2Apr 19, 2022
Abnormality detection apparatus for electrically heated catalyst
TOYOTA MOTOR CO LTD2 citations71
US7694512B2Apr 13, 2010
Exhaust gas purification apparatus for internal combustion engine
TOYOTA MOTOR CO LTD3 citations63
US7107762B2Sep 19, 2006
Secondary air supplying apparatus
TOYOTA MOTOR CO LTD3 citations63
US5873345AFeb 23, 1999
Idling speed controller and idling speed control method for internal-combustion engine
TOYOTA MOTOR CO LTD3 citations63
US11199145B2Dec 14, 2021
Control device for internal combustion engine
TOYOTA MOTOR CO LTD1 citations62
US7286924B2Oct 23, 2007
Knocking determining apparatus of internal combustion engine
TOYOTA MOTOR CO LTD2 citations62
US11492941B1Nov 8, 2022
Controller for internal combustion engine
TOYOTA MOTOR CO LTD1 citations61
US12122353B2Oct 22, 2024
Control device for hybrid vehicle
TOYOTA MOTOR CO LTD0 citations50
US11795884B2Oct 24, 2023
Control device for internal combustion engine
TOYOTA MOTOR CO LTD0 citations50
US11306641B2Apr 19, 2022
Abnormality detection apparatus for electrically heated catalyst
TOYOTA MOTOR CO LTD0 citations50
US11300032B2Apr 12, 2022
Abnormality detection apparatus for electrically heated catalyst
TOYOTA MOTOR CO LTD0 citations50
US9562486B2Feb 7, 2017
Control device for internal combustion engine
TOYOTA MOTOR CO LTD0 citations42
US10100691B2Oct 16, 2018
Electrically heated catalyst
TOYOTA MOTOR CO LTD0 citations39