Inventor
OKAMOTO MASASHI
JP86 patents
⚠️ This page may combine multiple inventors who share the name “OKAMOTO MASASHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
USHIO ELECTRIC INC
36 patentsUS6919686B2Jul 19, 2005
Discharge lamp having an auxiliary light source to produce light with a short wavelength
USHIO ELECTRIC INC23 citations93
US6605906B2Aug 12, 2003
Light source device
USHIO ELECTRIC INC26 citations93
US6483253B1Nov 19, 2002
Light source
USHIO ELECTRIC INC20 citations93
US5936358AAug 10, 1999
Dielectric barrier discharge device
USHIO ELECTRIC INC21 citations93
US6661184B2Dec 9, 2003
Light source device
USHIO ELECTRIC INC21 citations92
US6597118B2Jul 22, 2003
High-pressure mercury lamp luminescent device and means of ignition
USHIO ELECTRIC INC34 citations92
US6495972B1Dec 17, 2002
Dielectric barrier discharge lamp light source
USHIO ELECTRIC INC36 citations92
US6445137B1Sep 3, 2002
Dielectric barrier discharge lamp apparatus
USHIO ELECTRIC INC31 citations92
US6356033B1Mar 12, 2002
Light source using dielectric barrier discharge lamp, and power supply
USHIO ELECTRIC INC26 citations92
US5763999AJun 9, 1998
Light source device using a double-tube dielectric barrier discharge lamp and output stabilizing power source
USHIO ELECTRIC INC38 citations92
US6552502B2Apr 22, 2003
Light source device
USHIO ELECTRIC INC20 citations90
US7355355B2Apr 8, 2008
Discharge lamp lighting apparatus
USHIO ELECTRIC INC9 citations84
US7012381B2Mar 14, 2006
DC—DC converter and device for operation of a high pressure discharge lamp using the converter
USHIO ELECTRIC INC12 citations84
US6646391B2Nov 11, 2003
Light source device of a dielectric barrier discharge lamp
USHIO ELECTRIC INC15 citations84
US6376998B1Apr 23, 2002
Feeding device for discharge lamp
USHIO ELECTRIC INC16 citations84
US6369519B1Apr 9, 2002
Dielectric barrier discharge lamp light source
USHIO ELECTRIC INC18 citations84
US6239559B1May 29, 2001
Light source using dielectric barrier discharge lamp
USHIO ELECTRIC INC16 citations84
US7845805B2Dec 7, 2010
Discharge lamp lighting apparatus and projector
USHIO ELECTRIC INC9 citations83
US7301289B2Nov 27, 2007
Discharge lamp lighting control device
USHIO ELECTRIC INC10 citations83
US6946807B2Sep 20, 2005
Lamp lighting apparatus for a discharge lamp
USHIO ELECTRIC INC13 citations83
US7365497B2Apr 29, 2008
Discharge lamp ignition device and projector
USHIO ELECTRIC INC14 citations82
US6734643B2May 11, 2004
Light source device
USHIO ELECTRIC INC17 citations82
US7078868B2Jul 18, 2006
DC—DC converter and device for operation of a high pressure discharge lamp using said converter
USHIO ELECTRIC INC8 citations74
US6759811B2Jul 6, 2004
Light source device
USHIO ELECTRIC INC10 citations74
US9874330B2Jan 23, 2018
Light projection device and head lamp for vehicle
USHIO ELECTRIC INC2 citations73
US8950873B2Feb 10, 2015
Light source apparatus and projector
USHIO ELECTRIC INC6 citations73
US6894437B2May 17, 2005
Light source device
USHIO ELECTRIC INC10 citations73
US6788008B2Sep 7, 2004
Device for operating a dielectric barrier discharge lamp
USHIO ELECTRIC INC7 citations73
US6373192B1Apr 16, 2002
Dielectric barrier discharge lamp and irradiation device
USHIO ELECTRIC INC12 citations73
US10191362B2Jan 29, 2019
Light source unit and projector
USHIO ELECTRIC INC2 citations71
US7239090B2Jul 3, 2007
Discharge lamp lighting apparatus
USHIO ELECTRIC INC9 citations71
US6838838B2Jan 4, 2005
Power feeding apparatus for discharge lamp
USHIO ELECTRIC INC10 citations69
US8358079B2Jan 22, 2013
Discharge lamp light apparatus
USHIO ELECTRIC INC2 citations63
US7847492B2Dec 7, 2010
Discharge lamp lighting apparatus and projector
USHIO ELECTRIC INC4 citations63
US7567041B2Jul 28, 2009
Discharge lamp lighting apparatus and projector
USHIO ELECTRIC INC5 citations63
US7332874B2Feb 19, 2008
Discharge lamp ignition device
USHIO ELECTRIC INC4 citations63
MITSUBISHI RAYON CO
8 patentsUS4781832ANov 1, 1988
Hollow-fiber filter module
MITSUBISHI RAYON CO30 citations92
US4720342AJan 19, 1988
Hollow-fiber filter module with filtrate conduit
MITSUBISHI RAYON CO28 citations92
US6871000B1Mar 22, 2005
Plastic optical fiber, optical fiber cable, plugged optical fiber cable, and production methods thereof
MITSUBISHI RAYON CO18 citations82
US5127079AJun 30, 1992
Multifilament type plastic optical fiber endoscope
MITSUBISHI RAYON CO20 citations81
US6569523B2May 27, 2003
Carbon fiber bundle
MITSUBISHI RAYON CO6 citations71
US6503624B2Jan 7, 2003
Carbon fiber precursor fiber bundle and manufacturing method of the same
MITSUBISHI RAYON CO7 citations71
US5882690AMar 16, 1999
Resin forming nozzle device and resin forming method using same
MITSUBISHI RAYON CO8 citations69
US4980012ADec 25, 1990
Apparatus for preparation of a sheet-shaped photoconductor
MITSUBISHI RAYON CO14 citations68
JUJO PAPER CO LTD
2 patentsNIHON MEDIPHYSICS CO LTD
1 patentSAKATA SHOKAI LTD
1 patentDAINIPPON SCREEN MFG
1 patentARKRAY INC
1 patentShowing the top 50 of 86 patents by PatentIndex Score.