Inventor
USUI TOSHIFUMI
JP46 patents
⚠️ This page may combine multiple inventors who share the name “USUI TOSHIFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
39 patentsUS4887577ADec 19, 1989
Hot-wire type air flow meter and an internal combustion engine with the same
HITACHI LTD45 citations95
US4615173AOct 7, 1986
Exhaust emission control apparatus for diesel engine
HITACHI LTD72 citations94
US6559637B2May 6, 2003
Non-contact rotational position sensor and throttle valve assembly including non-contact rotational position sensor
HITACHI LTD32 citations93
US6701892B2Mar 9, 2004
Throttle valve control apparatus of internal combustion engine and automobile using the same
HITACHI LTD30 citations92
US6691678B1Feb 17, 2004
Throttle assembly for internal combustion engine, and throttle sensor
HITACHI LTD23 citations92
US6626143B1Sep 30, 2003
Throttle device of internal combustion engine
HITACHI LTD24 citations92
US6591809B2Jul 15, 2003
Throttle device for internal-combustion engine
HITACHI LTD19 citations92
US6390062B1May 21, 2002
Throttle device of internal combustion engine
HITACHI LTD39 citations92
US6382181B2May 7, 2002
Throttle apparatus for an internal combustion engine
HITACHI LTD22 citations92
US6371080B1Apr 16, 2002
Throttle device for internal-combustion engine
HITACHI LTD21 citations92
US6199537B1Mar 13, 2001
Method and apparatus for controlling intake air flow rate of an engine and method for controlling output
HITACHI LTD23 citations92
US6098594AAug 8, 2000
Electric-control-type throttle apparatus
HITACHI LTD23 citations92
US6047680AApr 11, 2000
Electronically controlled throttle apparatus for an engine
HITACHI LTD20 citations92
US4974445ADec 4, 1990
Hot wire type of air flow meter and internal combustion engine using the same
HITACHI LTD26 citations92
US4991560AFeb 12, 1991
Hot-wire air flow meter and internal combustion engine provided with same
HITACHI LTD26 citations91
US6691681B2Feb 17, 2004
Throttle apparatus for an internal combustion engine
HITACHI LTD12 citations82
US6418908B2Jul 16, 2002
Throttle apparatus for an internal combustion engine
HITACHI LTD10 citations82
US6382180B2May 7, 2002
Throttle apparatus for an internal combustion engine
HITACHI LTD10 citations82
US4549399AOct 29, 1985
Exhaust emission control system for diesel engine
HITACHI LTD23 citations81
US4581891AApr 15, 1986
Exhaust emission control device for diesel engine
HITACHI LTD22 citations78
US6694947B2Feb 24, 2004
Throttle apparatus for an internal combustion engine
HITACHI LTD6 citations74
US6543416B2Apr 8, 2003
Electric-control-type throttle apparatus
HITACHI LTD8 citations74
US6488010B2Dec 3, 2002
Throttle device for internal-combustion engine
HITACHI LTD8 citations74
US6386182B2May 14, 2002
Method and apparatus for controlling intake air flow rate of an engine and method for controlling output
HITACHI LTD6 citations74
US5231871AAug 3, 1993
Hot-electrical-resistance type gas flow meter and internal combustion engine with hot-electrical-resistance type gas flow meter
HITACHI LTD12 citations74
USRE34403EOct 12, 1993
Hot-wire type air flow meter and an internal combustion engine with the same
HITACHI LTD16 citations73
US4815192AMar 28, 1989
Method of securing an elongated vibration amplifier member to an annular vibrating reed
HITACHI LTD17 citations73
US4506506AMar 26, 1985
Exhaust emission control device for diesel engine
HITACHI LTD8 citations73
US4723443AFeb 9, 1988
Intake air flow sensor
HITACHI LTD16 citations72
US5083455AJan 28, 1992
Air meter for an internal combustion engine and method of producing the same
HITACHI LTD11 citations71
US4790178ADec 13, 1988
Intake structure of internal combustion engine with bypass intake passage for mounting air flow meter
HITACHI LTD7 citations71
USRE40523ESep 30, 2008
Non-contact rotational position sensor and throttle valve assembly including non-contact rotational position sensor
HITACHI LTD5 citations63
US7367315B2May 6, 2008
Throttle valve control apparatus of internal combustion engine and automobile using the same
HITACHI LTD1 citations63
US6684850B2Feb 3, 2004
Electric-control-type throttle apparatus
HITACHI LTD2 citations63
US6401690B1Jun 11, 2002
Electric-control-type throttle apparatus
HITACHI LTD5 citations63
US4986115AJan 22, 1991
Hot-wire air flow meter
HITACHI LTD2 citations62
US4986116AJan 22, 1991
Air flow meter for internal combustion engine
HITACHI LTD4 citations62
US4782805ANov 8, 1988
Control device for throttle valve for internal combustion engine
HITACHI LTD6 citations60
US4397792AAug 9, 1983
Throttle valve linkage for use with multi-carburetor assembly
HITACHI LTD3 citations59
HITACHI CAR ENG CO LTD
7 patentsUS7121259B2Oct 17, 2006
Throttle device for internal-combustion engine
HITACHI CAR ENG CO LTD14 citations92
US6945228B2Sep 20, 2005
Throttle device for internal-combustion engine
HITACHI CAR ENG CO LTD14 citations92
US7152581B2Dec 26, 2006
Throttle valve control apparatus of internal combustion engine and automobile using the same
HITACHI CAR ENG CO LTD9 citations74
US7093581B2Aug 22, 2006
Throttle valve control apparatus of internal combustion engine and automobile using the same
HITACHI CAR ENG CO LTD6 citations74
US6966297B2Nov 22, 2005
Throttle device for internal-combustion engine
HITACHI CAR ENG CO LTD9 citations74
US7231903B2Jun 19, 2007
Throttle apparatus for an internal combustion engine
HITACHI CAR ENG CO LTD3 citations63
US7055498B2Jun 6, 2006
Throttle assembly for internal combustion engine, and throttle sensor
HITACHI CAR ENG CO LTD5 citations59