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Koji Higashi
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Osaka, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Transflective film, transflective polarizer, and polarizing light s...
Patent number
7,820,252
Issue date
Oct 26, 2010
Sumitomo Chemical Company, Limited
Koji Higashi
G02 - OPTICS
Information
Patent Grant
Polarizer, polarizing light source device and liquid crystal display
Patent number
6,807,005
Issue date
Oct 19, 2004
Sumitomo Chemical Company, Limited
Masaru Honda
G02 - OPTICS
Information
Patent Grant
Phase retarder
Patent number
6,762,266
Issue date
Jul 13, 2004
Sumitomo Chemical Company, Limited
Keiichi Minakuchi
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Normally white mode twisted nematic liquid crystal display device h...
Patent number
6,208,396
Issue date
Mar 27, 2001
Sumitomo Chemical Company, Limited
Akiko Shimizu
G02 - OPTICS
Information
Patent Grant
Phase retarder film containing TiO.sub.2
Patent number
6,097,460
Issue date
Aug 1, 2000
Sumitomo Chemical Company, Limited
Akiko Shimizu
G02 - OPTICS
Information
Patent Grant
Phase retarder and liquid crystal display device using the same
Patent number
6,060,183
Issue date
May 9, 2000
Sumitomo Chemical Company, Limited
Koji Higashi
G02 - OPTICS
Information
Patent Grant
Phase retarder film
Patent number
5,926,313
Issue date
Jul 20, 1999
Sumitomo Chemical Company, Limited
Takahiro Hishinuma
G02 - OPTICS
Information
Patent Grant
Phase retarder film
Patent number
5,888,634
Issue date
Mar 30, 1999
Sumitomo Chemical Company, Limited
Akiko Shimizu
G02 - OPTICS
Information
Patent Grant
Optically anisotropic material, process for producing it, and retar...
Patent number
5,693,253
Issue date
Dec 2, 1997
Sumitomo Chemical Company, Limited
Toshihiro Ohnishi
G02 - OPTICS
Information
Patent Grant
Optically anisotropic material, process for producing it, and retar...
Patent number
5,688,436
Issue date
Nov 18, 1997
Sumitomo Chemical Company, Limited
Toshihiro Ohnishi
G02 - OPTICS
Information
Patent Grant
Process for making a phase retarder film
Patent number
5,658,505
Issue date
Aug 19, 1997
Sumitomo Chemical Company, Limited
Akiko Shimizu
G02 - OPTICS
Information
Patent Grant
Layered inorganic compound-containing phase retarder
Patent number
5,631,755
Issue date
May 20, 1997
Sumitomo Chemical Company, Limited
Taiichi Sakaya
G02 - OPTICS
Information
Patent Grant
Process for producing phase retarder film
Patent number
5,474,731
Issue date
Dec 12, 1995
Sumitomo Chemical Company, Ltd.
Michitaka Morikawa
G02 - OPTICS
Information
Patent Grant
Liquid crystal device with phase retarder having layered inorganic...
Patent number
5,430,566
Issue date
Jul 4, 1995
Sumitomo Chemical Company, Limited
Taiichi Sakaya
G02 - OPTICS
Information
Patent Grant
Process for producing phase retarder
Patent number
5,366,682
Issue date
Nov 22, 1994
Sumitomo Chemical Company, Limited
Michitaka Morikawa
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Dye-containing polarizing film
Patent number
5,354,512
Issue date
Oct 11, 1994
Sumitomo Chemical Company Limited
Kazuya Ogino
G02 - OPTICS
Information
Patent Grant
Dye-containing light-polarizing film
Patent number
5,310,509
Issue date
May 10, 1994
Sumitomo Chemical Company, Limited
Toyokazu Okada
G02 - OPTICS
Information
Patent Grant
Phase retarder and process for producing the same
Patent number
5,285,303
Issue date
Feb 8, 1994
Sumitomo Chemical Co., Ltd.
Toyokazu Okada
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Light-polarizing films
Patent number
5,082,601
Issue date
Jan 21, 1992
Sumitomo Chemical Co., Ltd.
Toyokazu Okada
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Phase retarder and liquid crystal display using the same
Patent number
5,061,042
Issue date
Oct 29, 1991
Sumitomo Chemical Co., Ltd.
Kimishige Nakamura
G02 - OPTICS
Information
Patent Grant
Light-polarizing films
Patent number
4,802,745
Issue date
Feb 7, 1989
Sumitomo Chemical Company, Limited
Toyokazu Okada
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Patents Applications
last 30 patents
Information
Patent Application
Transflective film, transflective polarizer, and polarizing light s...
Publication number
20030082314
Publication date
May 1, 2003
Sumitomo Chemical Company, Limited
Koji Higashi
G02 - OPTICS
Information
Patent Application
Phase retarder
Publication number
20020169267
Publication date
Nov 14, 2002
Sumitomo Chemical Company, Limited
Keiichi Minakuchi
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Polarizer, polarizing light source device and liquid crystal display
Publication number
20010033349
Publication date
Oct 25, 2001
Masaru Honda
G02 - OPTICS
Information
Patent Application
Transflective polarizer
Publication number
20010022997
Publication date
Sep 20, 2001
Masaru Honda
G02 - OPTICS