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Yasunori Ogawa
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Suwa-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Projector
Patent number
RE41680
Issue date
Sep 14, 2010
Seiko Epson Corporation
Toshiaki Hashizume
353 - Optics: image projectors
Information
Patent Grant
Light source device and projector
Patent number
7,648,247
Issue date
Jan 19, 2010
Seiko Epson Corporation
Yasunori Ogawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Optical device and projector
Patent number
RE40397
Issue date
Jun 24, 2008
Seiko Epson Corporation
Yasunori Ogawa
353 - Optics: image projectors
Information
Patent Grant
Optical element, polarization illumination device, and projector
Patent number
RE40251
Issue date
Apr 22, 2008
Seiko Epson Corporation
Yasunori Ogawa
359 - Optical: systems and elements
Information
Patent Grant
Dichroic prism, prism unit, and projection display apparatus
Patent number
RE39859
Issue date
Sep 25, 2007
Seiko Epson Corporation
Tomiyoshi Ushiyama
359 - Optical: systems and elements
Information
Patent Grant
Projector
Patent number
RE39702
Issue date
Jun 26, 2007
Seiko Epson Corporation
Toshiaki Hashizume
353 - Optics: image projectors
Information
Patent Grant
Light source device and projector
Patent number
7,140,739
Issue date
Nov 28, 2006
Seiko Epson Corporation
Yasunori Ogawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Optical element, polarization illumination device, and projector
Patent number
RE39243
Issue date
Aug 22, 2006
Seiko Epson Corporation
Yasunori Ogawa
359 - Optical: systems and elements
Information
Patent Grant
Optical filter, optical device, and projector
Patent number
7,036,942
Issue date
May 2, 2006
Seiko Epson Corporation
Yasunori Ogawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Projector
Patent number
7,029,127
Issue date
Apr 18, 2006
Seiko Epson Corporation
Yasunori Ogawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Projector
Patent number
RE39040
Issue date
Mar 28, 2006
Seiko Epson Corporation
Yasunori Ogawa
353 - Optics: image projectors
Information
Patent Grant
Polarization converter, an illumination optical device having the p...
Patent number
7,011,412
Issue date
Mar 14, 2006
Seiko Epson Corporation
Yasunori Ogawa
G02 - OPTICS
Information
Patent Grant
Optical device and projector
Patent number
6,869,186
Issue date
Mar 22, 2005
Seiko Epson Corporation
Yasunori Ogawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Projector and optical device
Patent number
6,866,387
Issue date
Mar 15, 2005
Seiko Epson Corporation
Yasunori Ogawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Polarization converter, illumination optical device having the pola...
Patent number
6,846,079
Issue date
Jan 25, 2005
Seiko Epson Corporation
Yasunori Ogawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Projector and optical device
Patent number
6,830,338
Issue date
Dec 14, 2004
Seiko Epson Corporation
Yasunori Ogawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Liquid crystal device and projector using the same
Patent number
6,788,377
Issue date
Sep 7, 2004
Seiko Epson Corporation
Yasunori Ogawa
G02 - OPTICS
Information
Patent Grant
Optical modulation device and projector
Patent number
6,603,590
Issue date
Aug 5, 2003
Seiko Epson Corporation
Yasunori Ogawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Projector
Patent number
6,558,001
Issue date
May 6, 2003
Seiko Epson Corporation
Yasunori Ogawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Projector
Patent number
RE38084
Issue date
Apr 22, 2003
Seiko Epson Corporation
Toshiaki Hashizume
353 - Optics: image projectors
Information
Patent Grant
Illumination optical system and projector using same
Patent number
6,527,393
Issue date
Mar 4, 2003
Seiko Epson Corporation
Yasunori Ogawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Illumination optical system and projector using the same
Patent number
6,491,397
Issue date
Dec 10, 2002
Seiko Epson Corporation
Yasunori Ogawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical modulation device and projector
Patent number
6,373,616
Issue date
Apr 16, 2002
Seiko Epson Corporation
Yasunori Ogawa
G02 - OPTICS
Information
Patent Grant
Projector
Patent number
6,315,417
Issue date
Nov 13, 2001
Seiko Epson Corporation
Akitaka Yajima
G02 - OPTICS
Information
Patent Grant
Illuminating optical system and projection type display
Patent number
6,286,961
Issue date
Sep 11, 2001
Seiko Epson Corporation
Yasunori Ogawa
G02 - OPTICS
Information
Patent Grant
Liquid crystal device and projector display device having a specifi...
Patent number
6,278,500
Issue date
Aug 21, 2001
Seiko Epson Corporation
Yasunori Ogawa
G02 - OPTICS
Information
Patent Grant
Projector
Patent number
6,247,817
Issue date
Jun 19, 2001
Seiko Epson Corporation
Yasunori Ogawa
G02 - OPTICS
Information
Patent Grant
Liquid crystal panel structure with micro-lens array and projector...
Patent number
6,195,143
Issue date
Feb 27, 2001
Seiko Epson Corporation
Yasunori Ogawa
G02 - OPTICS
Information
Patent Grant
Projector
Patent number
6,142,634
Issue date
Nov 7, 2000
Seiko Epson Corporation
Yasunori Ogawa
G02 - OPTICS
Information
Patent Grant
Dichroic prism, prism unit, and projection display apparatus
Patent number
6,141,150
Issue date
Oct 31, 2000
Seiko Epson Corporation
Tomiyoshi Ushiyama
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
LIGHT SOURCE DEVICE AND PROJECTOR
Publication number
20190018308
Publication date
Jan 17, 2019
SEIKO EPSON CORPORATION
Takahiro TAKIZAWA
G02 - OPTICS
Information
Patent Application
Light source device and projector
Publication number
20060279712
Publication date
Dec 14, 2006
SEIKO EPSON CORPORATION
Yasunori Ogawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Projector
Publication number
20040246448
Publication date
Dec 9, 2004
SEIKO EPSON CORPORATION
Yasunori Ogawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Light source device and projector
Publication number
20040239897
Publication date
Dec 2, 2004
SEIKO EPSON CORPORATION
Yasunori Ogawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Projector and optical device
Publication number
20040189951
Publication date
Sep 30, 2004
SEIKO EPSON CORPORATION
Yasunori Ogawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Optical filter, optical device, and projector
Publication number
20040057116
Publication date
Mar 25, 2004
SEIKO EPSON CORPORATION
Yasunori Ogawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical device and projector
Publication number
20040017613
Publication date
Jan 29, 2004
SEIKO EPSON CORPORATION
Yasunori Ogawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Polarization converter, an illumination optical device having the p...
Publication number
20030197937
Publication date
Oct 23, 2003
SEIKO EPSON CORPORATION
Yasunori Ogawa
G02 - OPTICS
Information
Patent Application
Polarization converter, illumination optical device having the pola...
Publication number
20030197934
Publication date
Oct 23, 2003
SEIKO EPSON CORPORATION
Yasunori Ogawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical modulation device and projector
Publication number
20020051276
Publication date
May 2, 2002
SEIKO EPSON CORPORATION
Yasunori Ogawa
G02 - OPTICS
Information
Patent Application
Projector
Publication number
20020021416
Publication date
Feb 21, 2002
SEIKO EPSON CORPORATION
Yasunori Ogawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Illumination optical system and projector using the same
Publication number
20020018150
Publication date
Feb 14, 2002
SEIKO EPSON CORPORATION
Yasunori Ogawa
G02 - OPTICS
Information
Patent Application
Projector
Publication number
20020012104
Publication date
Jan 31, 2002
SEIKO EPSON CORPORATION
Yasunori Ogawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY