P

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 patents
US6919686B2Jul 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 patents

JUJO PAPER CO LTD

2 patents

NIHON MEDIPHYSICS CO LTD

1 patent

SAKATA SHOKAI LTD

1 patent

DAINIPPON SCREEN MFG

1 patent

ARKRAY INC

1 patent

Showing the top 50 of 86 patents by PatentIndex Score.