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Yoshihiro Katsu
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Sagamihara, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Liquid crystal display device, side backlight unit, lamp reflector...
Patent number
7,212,257
Issue date
May 1, 2007
International Business Machines Corporation
Yoshihiro Katsu
G02 - OPTICS
Information
Patent Grant
Light source device, display device and reflection sheets for use t...
Patent number
7,064,741
Issue date
Jun 20, 2006
International Business Machines Corporation
Yoshihiro Katsu
G02 - OPTICS
Information
Patent Grant
Plane light source apparatus, light guide plate and display
Patent number
6,692,133
Issue date
Feb 17, 2004
International Business Machines Corporation
Yoshihiro Katsu
G02 - OPTICS
Information
Patent Grant
Light guide plate, sidelight type light source device and image dis...
Patent number
6,607,281
Issue date
Aug 19, 2003
International Business Machines Corporation
Masaki Ono
F21 - LIGHTING
Information
Patent Grant
Liquid crystal panel, display device, identification mark detection...
Patent number
6,597,427
Issue date
Jul 22, 2003
International Business Machines Corporation
Yoshihiro Katsu
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Back light unit, liquid crystal display, and method for manufacturi...
Patent number
6,572,236
Issue date
Jun 3, 2003
International Business Machines Corporation
Masaru Suzuki
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
Light source device, display device and reflection sheets for use t...
Publication number
20020154087
Publication date
Oct 24, 2002
Yoshihiro Katsu
G02 - OPTICS
Information
Patent Application
Liquid crystal display device, side backlight unit, lamp reflector...
Publication number
20020101549
Publication date
Aug 1, 2002
International Business Machines Corporation
Yoshihiro Katsu
G02 - OPTICS
Information
Patent Application
Light guide plate, sidelight type light source device and image dis...
Publication number
20020044438
Publication date
Apr 18, 2002
Masaki Ono
G02 - OPTICS
Information
Patent Application
Plane light source apparatus, light guide plate and display
Publication number
20020015300
Publication date
Feb 7, 2002
International Business Machines Corporation
Yoshihiro Katsu
G02 - OPTICS
Information
Patent Application
Back light unit, liquid crystal display, and method for manufacturi...
Publication number
20010036068
Publication date
Nov 1, 2001
International Business Machines Corporation
Masaru Suzuki
G02 - OPTICS
Information
Patent Application
Input pen for touch panel, and input pen
Publication number
20010028345
Publication date
Oct 11, 2001
International Business Machines Corporation
Yoshifumi Natsuyama
G06 - COMPUTING CALCULATING COUNTING