Inventor
TSUCHIDA HIROFUMI
JP65 patents
⚠️ This page may combine multiple inventors who share the name “TSUCHIDA HIROFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NISSAN MOTOR
22 patentsUS6289673B1Sep 18, 2001
Air-fuel ratio control for exhaust gas purification of engine
NISSAN MOTOR84 citations97
US6070567AJun 6, 2000
Individual cylinder combustion state detection from engine crankshaft acceleration
NISSAN MOTOR62 citations96
US6516612B1Feb 11, 2003
Exhaust gas purification device for an engine and A/F ratio control for early activating a NOx trapping catalyst
NISSAN MOTOR59 citations93
US6912989B2Jul 5, 2005
Fuel injection control device for a direct fuel injection engine
NISSAN MOTOR21 citations92
US6845610B2Jan 25, 2005
Exhaust gas purification apparatus and method
NISSAN MOTOR48 citations92
US6814046B1Nov 9, 2004
Direct fuel injection engine
NISSAN MOTOR21 citations92
US6314724B1Nov 13, 2001
Air-fuel ratio controller and method of controlling air-fuel ratio
NISSAN MOTOR37 citations92
US6282889B1Sep 4, 2001
Air/fuel ration control system of internal combustion engine
NISSAN MOTOR23 citations92
US6220017B1Apr 24, 2001
Exhaust emission control system for internal combustion engine
NISSAN MOTOR20 citations92
US4833373AMay 23, 1989
System for shaking water off windshield
NISSAN MOTOR35 citations91
US7334547B2Feb 26, 2008
Variable expansion-ratio engine
NISSAN MOTOR15 citations84
US6477833B2Nov 12, 2002
Engine exhaust emission control
NISSAN MOTOR20 citations83
US7121087B2Oct 17, 2006
Exhaust emission control device of internal combustion engine
NISSAN MOTOR8 citations73
US6497846B1Dec 24, 2002
Exhaust gas purifying system for internal combustion engine
NISSAN MOTOR10 citations73
US6381954B1May 7, 2002
Air/fuel ratio control system of internal combustion engine
NISSAN MOTOR10 citations73
US4875444AOct 24, 1989
Swirl chamber for diesel engines and the like
NISSAN MOTOR12 citations72
US10465622B2Nov 5, 2019
Engine control method and control device
NISSAN MOTOR2 citations69
US9964055B2May 8, 2018
Control device and control method of internal combustion engine
NISSAN MOTOR2 citations68
US5495839AMar 5, 1996
Engine fuel injection controller
NISSAN MOTOR8 citations68
US7980207B2Jul 19, 2011
Multi-link engine
NISSAN MOTOR4 citations63
US7086378B2Aug 8, 2006
Direct fuel injection internal combustion engine
NISSAN MOTOR3 citations63
US12055108B2Aug 6, 2024
Control method and control device for internal combustion engine
NISSAN MOTOR0 citations62
OLYMPUS OPTICAL CO
22 patentsUS6559439B1May 6, 2003
Image taking lens unit with frame member for positioning lens and substrate
OLYMPUS OPTICAL CO87 citations96
US5157550AOct 20, 1992
Vari-focal lens system
OLYMPUS OPTICAL CO61 citations96
US4999007AMar 12, 1991
Vari-focal lens system
OLYMPUS OPTICAL CO72 citations94
US6327096B1Dec 4, 2001
Set of lens system
OLYMPUS OPTICAL CO20 citations93
US5870229AFeb 9, 1999
Gradient index lens component and image pickup apparatus using the gradient index lens component
OLYMPUS OPTICAL CO33 citations93
US5184251AFeb 2, 1993
Vari-focal lens system
OLYMPUS OPTICAL CO27 citations93
US5046833ASep 10, 1991
Zoom lens system
OLYMPUS OPTICAL CO24 citations93
US6362925B1Mar 26, 2002
Lens group zoom lens system, and display device having phototaking function
OLYMPUS OPTICAL CO17 citations84
US6359738B1Mar 19, 2002
Two-group zoom lens system and display device having phototaking function
OLYMPUS OPTICAL CO7 citations74
US6163411ADec 19, 2000
Lens system and image pickup apparatus
OLYMPUS OPTICAL CO10 citations74
US6130787AOct 10, 2000
Optical system and optical module
OLYMPUS OPTICAL CO10 citations74
US6104545AAug 15, 2000
Gradient index lens component and image pickup apparatus using the gradient index lens
OLYMPUS OPTICAL CO12 citations74
US6057968AMay 2, 2000
Eyepiece system
OLYMPUS OPTICAL CO9 citations74
US5268791ADec 7, 1993
Lens system using graded refractive index lens component
OLYMPUS OPTICAL CO13 citations74
US5235464AAug 10, 1993
Lens system
OLYMPUS OPTICAL CO12 citations74
US5004329AApr 2, 1991
Vari-focal lens system
OLYMPUS OPTICAL CO10 citations74
US4828383AMay 9, 1989
Range-finding optical system
OLYMPUS OPTICAL CO19 citations74
US4810071AMar 7, 1989
Variable focal length lens system
OLYMPUS OPTICAL CO8 citations74
US5117308AMay 26, 1992
Lens system using unhomogenous media
OLYMPUS OPTICAL CO12 citations73
US4947198AAug 7, 1990
Finder optical system for single reflex cameras
OLYMPUS OPTICAL CO17 citations70
US5912770AJun 15, 1999
Achromatic lens system
OLYMPUS OPTICAL CO2 citations63
US5218475AJun 8, 1993
Attachment lens system
OLYMPUS OPTICAL CO4 citations63
OLYMPUS CORP
4 patentsUS7801439B2Sep 21, 2010
Image taking device having a detachable optical unit, an attachment and displacement detection unit, and a control unit responsive to attachment and displacement detection
OLYMPUS CORP75 citations97
US7604423B2Oct 20, 2009
Interchangeable-lens camera
OLYMPUS CORP50 citations92
US6870692B2Mar 22, 2005
Wide angle lens system
OLYMPUS CORP2 citations63
US6831791B2Dec 14, 2004
Optical system for optical communications and method of manufacturing the same
OLYMPUS CORP3 citations63
TAKAHASHI NAOKI
1 patentHIRAYA KOJI
1 patentShowing the top 50 of 65 patents by PatentIndex Score.