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Narutoshi Hayashi
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Ehime, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Polarizer, process for preparing the same, optical member and liqui...
Patent number
9,638,850
Issue date
May 2, 2017
Sumitomo Chemical Company, Limited
Yoshiki Matsuoka
G02 - OPTICS
Information
Patent Grant
Method for producing iodine type polarizing film
Patent number
8,518,474
Issue date
Aug 27, 2013
Sumitomo Chemical Company, Limited
Koji Matsumoto
B32 - LAYERED PRODUCTS
Information
Patent Grant
Method for producing polarizing film
Patent number
8,012,383
Issue date
Sep 6, 2011
Sumitomo Chemical Company, Limited
Koji Matsumoto
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Polarizing plate and liquid crystal display device using the same
Patent number
7,450,305
Issue date
Nov 11, 2008
Sumitomo Chemical Company, Limited
Narutoshi Hayashi
G02 - OPTICS
Information
Patent Grant
Poly-azo compound, and polarization film having said compound
Patent number
7,276,268
Issue date
Oct 2, 2007
Sumitomo Chemical Company, Limited
Toru Ashida
F21 - LIGHTING
Information
Patent Grant
Polarizing plate and method for producing the same
Patent number
7,136,225
Issue date
Nov 14, 2006
Sumitomo Chemical Company, Limited
Koji Matsumoto
G02 - OPTICS
Information
Patent Grant
Disazo compound or salt thereof and polarizing film using the same
Patent number
7,070,715
Issue date
Jul 4, 2006
Sumitomo Chemical Company, Limited
Toru Ashida
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Polarizing plate and liquid crystal display device using the same
Patent number
6,965,473
Issue date
Nov 15, 2005
Sumitomo Chemical Company, Limited
Narutoshi Hayashi
G02 - OPTICS
Information
Patent Grant
Polyazo compound or salt thereof and dye-based polarization film co...
Patent number
6,699,976
Issue date
Mar 2, 2004
Sumitomo Chemical Company, Limited
Toru Ashida
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Iodine-type polarizing plate enables neutral white in white display...
Patent number
6,606,136
Issue date
Aug 12, 2003
Sumitomo Chemical Company, Limited
Koji Matsumoto
G02 - OPTICS
Information
Patent Grant
Light-polarizing film
Patent number
6,583,929
Issue date
Jun 24, 2003
Sumitomo Chemical Company, Limited
Narutoshi Hayashi
G02 - OPTICS
Information
Patent Grant
Light-polarizing film
Patent number
6,522,468
Issue date
Feb 18, 2003
Sumitomo Chemical Company, Limited
Narutoshi Hayashi
G02 - OPTICS
Information
Patent Grant
Polyazo compound or salt thereof and dye-based polarization film co...
Patent number
6,399,752
Issue date
Jun 4, 2002
Sumitomo Chemical Company, Limited
Yoshiteru Ohta
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Azo-compounds and dye polarizing films containing them
Patent number
6,277,966
Issue date
Aug 21, 2001
SumitomoChemical Company, Ltd.
Yutaka Kayane
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Dye containing polarizing film
Patent number
6,235,064
Issue date
May 22, 2001
Sumitomo Chemical Company, Limited
Kazuya Ogino
G02 - OPTICS
Information
Patent Grant
Reflector, reflective polarizing plate and reflective liquid crysta...
Patent number
6,204,903
Issue date
Mar 20, 2001
Sumitomo Chemical Company, Limited
Narutoshi Hayashi
G02 - OPTICS
Information
Patent Grant
Reflective liquid crystal display with angularly selective light di...
Patent number
6,166,793
Issue date
Dec 26, 2000
Sumitomo Chemical Company, Limited
Narutoshi Hayashi
G02 - OPTICS
Information
Patent Grant
Azo compound and a polarizing film containing the same
Patent number
5,700,296
Issue date
Dec 23, 1997
Sumitomo Chemical Company, Limited
Kazuya Ogino
B32 - LAYERED PRODUCTS
Information
Patent Grant
Tetrakisazo compound and a polarizing film containing the same
Patent number
5,659,020
Issue date
Aug 19, 1997
Sumitomo Chemical Company, Limited
Kazuya Ogino
G02 - OPTICS
Information
Patent Grant
Disazo dyes having aminobenzoylamino group
Patent number
5,480,977
Issue date
Jan 2, 1996
Sumitomo Chemical Company, Limited
Kazuya Ogino
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
POLARIZER, PROCESS FOR PREPARING THE SAME, OPTICAL MEMBER AND LIQUI...
Publication number
20120169973
Publication date
Jul 5, 2012
Sumitomo Chemical Company, Limited
Yoshiki MATSUOKA
G02 - OPTICS
Information
Patent Application
Method for producing polarizing film
Publication number
20060244163
Publication date
Nov 2, 2006
Koji Matsumoto
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
Method for producing iodine type polarizing film
Publication number
20060045982
Publication date
Mar 2, 2006
Koji Matsumoto
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Polarized light separating element embedded with thin metallic wire
Publication number
20060039069
Publication date
Feb 23, 2006
Sumitomo Chemical Company, Limited
Narutoshi Hayashi
G02 - OPTICS
Information
Patent Application
Polarizing plate
Publication number
20050264726
Publication date
Dec 1, 2005
Sumitomo Chemical Company, Limited
Yoshiteru Ohta
G02 - OPTICS
Information
Patent Application
Poly-azo compound, and polarization film having said compound
Publication number
20050127335
Publication date
Jun 16, 2005
Sumitomo Chemical Company, Limited
Toru Ashida
F21 - LIGHTING
Information
Patent Application
Iodine type polarizing film, method of producing the same and polar...
Publication number
20050117219
Publication date
Jun 2, 2005
Sumitomo Chemical Company, Limited
Hideki Hayashi
G02 - OPTICS
Information
Patent Application
Polarizer, process for preparing the same, optical member and liqui...
Publication number
20040218117
Publication date
Nov 4, 2004
Sumitomo Chemical Company, Limited
Yoshiki Matsuoka
G02 - OPTICS
Information
Patent Application
Dye type polarizing film and dye type polarizer
Publication number
20040218118
Publication date
Nov 4, 2004
Sumitomo Chemical Company, Limited
Narutoshi Hayashi
G02 - OPTICS
Information
Patent Application
Polarizing plate and liquid crystal display device using the same
Publication number
20040156104
Publication date
Aug 12, 2004
Sumitomo Chemical Company, Limited
Narutoshi Hayashi
G02 - OPTICS
Information
Patent Application
Disazo compound or salt thereof and polarizing film using the same
Publication number
20040069976
Publication date
Apr 15, 2004
Sumitomo Chemical Company, Limited
Toru Ashida
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
Polarizing plate and its production method
Publication number
20030174398
Publication date
Sep 18, 2003
Hideki Hayashi
G02 - OPTICS
Information
Patent Application
Polyazo compound or salt thereof and dye-based polarization film co...
Publication number
20030098447
Publication date
May 29, 2003
Toru Ashida
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
Light-polarizing film
Publication number
20030035211
Publication date
Feb 20, 2003
Sumitomo Chemical Company, Limited
Narutoshi Hayashi
G02 - OPTICS
Information
Patent Application
Polarizing plate and method for producing the same`
Publication number
20030030906
Publication date
Feb 13, 2003
SUMITOMO CHEMICAL COMPANY LIMITED and OKURA INDUSTRIAL CO., LTD.
Koji Matsumoto
G02 - OPTICS
Information
Patent Application
Polarization film containing a monoazo compound or salt
Publication number
20020193515
Publication date
Dec 19, 2002
Yoshiteru Ohta
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
Polarizing plate and liquid crystal display device using the same
Publication number
20020131172
Publication date
Sep 19, 2002
Sumitomo Chemical Company, Limited
Narutoshi Hayashi
G02 - OPTICS
Information
Patent Application
Iodine-type polarizing plate
Publication number
20020063243
Publication date
May 30, 2002
Sumitomo Chemical Company, Limited
Koji Matsumoto
G02 - OPTICS
Information
Patent Application
LIGHT-POLARIZING FILM
Publication number
20010040652
Publication date
Nov 15, 2001
NARUTOSHI HAYASHI
G02 - OPTICS
Information
Patent Application
Azo-compounds and dye polarizing films containing them
Publication number
20010005748
Publication date
Jun 28, 2001
Yutaka Kayane
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...