Inventor
MATSUBARA TAKUJI
JP19 patents
⚠️ This page may combine multiple inventors who share the name “MATSUBARA TAKUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOYOTA MOTOR CO LTD
17 patentsUS6742379B2Jun 1, 2004
Intake air oxygen concentration sensor calibration device and method
TOYOTA MOTOR CO LTD73 citations98
US6988396B2Jan 24, 2006
Evaporated fuel treatment device for internal combustion engine
TOYOTA MOTOR CO LTD59 citations96
US6739177B2May 25, 2004
Combustible-gas sensor, diagnostic device for intake-oxygen concentration sensor, and air-fuel ratio control device for internal combustion engines
TOYOTA MOTOR CO LTD98 citations95
US7043972B2May 16, 2006
Evaporated fuel treatment device of internal combustion engine
TOYOTA MOTOR CO LTD24 citations92
US6837224B2Jan 4, 2005
Evaporated fuel treatment device for internal combustion engine
TOYOTA MOTOR CO LTD36 citations92
US6796295B2Sep 28, 2004
Evaporated fuel treatment device for internal combustion engine
TOYOTA MOTOR CO LTD20 citations92
US7481101B2Jan 27, 2009
Evaporated fuel treatment device for internal combustion engine
TOYOTA MOTOR CO LTD12 citations84
US7213450B2May 8, 2007
Evaporated fuel treatment device for internal combustion engine
TOYOTA MOTOR CO LTD7 citations74
US7082815B1Aug 1, 2006
Evaporated fuel treatment device of internal combustion engine
TOYOTA MOTOR CO LTD6 citations74
US6631632B2Oct 14, 2003
Intake air oxygen concentration sensor calibration device and method
TOYOTA MOTOR CO LTD10 citations74
US6371086B1Apr 16, 2002
Fuel injection control apparatus and method of direct fuel injection-type spark ignition engine
TOYOTA MOTOR CO LTD12 citations74
US7273043B2Sep 25, 2007
Control device of internal combustion engine
TOYOTA MOTOR CO LTD6 citations73
US7234447B2Jun 26, 2007
Control device of internal combustion engine
TOYOTA MOTOR CO LTD9 citations73
US7814743B2Oct 19, 2010
Control apparatus for internal combustion engine
TOYOTA MOTOR CO LTD4 citations63
US7827784B2Nov 9, 2010
Exhaust gas control apparatus for internal combustion engine and method of controlling same
TOYOTA MOTOR CO LTD2 citations62
US7822534B2Oct 26, 2010
Fuel supply device and fuel supply method for internal combustion engine
TOYOTA MOTOR CO LTD6 citations62
US12494644B2Dec 9, 2025
Power supply controller
TOYOTA MOTOR CO LTD0 citations48