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Tetsuhiko Yamaguchi
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Chiba, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Organic light-emitting device
Patent number
8,257,837
Issue date
Sep 4, 2012
Showa Denko K.K.
Tetsuhiko Yamaguchi
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Light emitting polymer material, organic electroluminescence device...
Patent number
8,025,987
Issue date
Sep 27, 2011
Showa Denko K.K.
Yoshiaki Takahashi
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Organic electroluminescence device using a copolymer and a phosphor...
Patent number
7,872,411
Issue date
Jan 18, 2011
Showa Denko K.K.
Tetsuhiko Yamaguchi
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Photosensitive compositions and pattern formation method
Patent number
6,342,330
Issue date
Jan 29, 2002
Toyo Gosei Kogyo Co., Ltd.
Masaharu Watanabe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Freeze-preventing material and method for preventing pavement surfa...
Patent number
6,126,850
Issue date
Oct 3, 2000
Showa Denko Kabushiki Kaisha
Nobuya Ishioka
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Terpolymers of unsaturated sulfonates, N-vinylamides and ethylenic...
Patent number
6,090,899
Issue date
Jul 18, 2000
Showa Denko K.K.
Takanori Futami
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Fine particulate cross-linked type N-vinylamide resin
Patent number
5,968,555
Issue date
Oct 19, 1999
Showa Denko K.K.
Tetsuhiko Yamaguchi
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Liquid-absorbing material composition, molded product therefrom, pr...
Patent number
5,965,651
Issue date
Oct 12, 1999
Showa Denko K.K.
Tetsuya Ishii
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Seedling culture mat
Patent number
5,934,011
Issue date
Aug 10, 1999
Showa Denko K.K.
Nobuya Ishioka
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information
Patent Grant
Method for the synthesis of mixed metal oxide powders
Patent number
5,788,950
Issue date
Aug 4, 1998
Showa Denko K.K.
Kunio Imamura
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Method for the synthesis of mixed metal oxide powders
Patent number
5,744,118
Issue date
Apr 28, 1998
Showa Denko K.K.
Kunio Imamura
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Fine particulate crosslinked type n-vinylamide resin and microgel,...
Patent number
5,338,815
Issue date
Aug 16, 1994
Showa Denko K.K.
Toshiyuki Aizawa
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Fine particulate crosslinked type N-vinylamide resin and microgel,...
Patent number
5,280,095
Issue date
Jan 18, 1994
Showa Denko K.K.
Toshiyuki Aizawa
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Process for producing collagen powder
Patent number
5,274,078
Issue date
Dec 28, 1993
Showa Denko K.K.
Tetsuo Wada
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Grant
Collagen powder having good dispersion stability and use thereof as...
Patent number
5,153,067
Issue date
Oct 6, 1992
Showa Denko K.K.
Eiichi, deceased Yoshida
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Fluoran derivatives and recording material containing the same
Patent number
4,833,256
Issue date
May 23, 1989
Showa Denko Kabushiki Kaisha
Teijiro Kitao
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Agent for forming surface-protecting layer on coated paper
Patent number
4,581,394
Issue date
Apr 8, 1986
Showa Denko Kabushiki Kaisha
Eiichi Yoshida
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Patents Applications
last 30 patents
Information
Patent Application
ORGANIC ELECTROLUMINESCENCE DEVICE USING A COPOLYMER AND A PHOSPHOR...
Publication number
20090284133
Publication date
Nov 19, 2009
Showa Denko K.K.
Tetsuhiko Yamaguchi
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
LIGHT EMITTING POLYMER MATERIAL, ORGANIC ELECTROLUMINESCENCE DEVICE...
Publication number
20090096353
Publication date
Apr 16, 2009
Showa Denko K.K.
Yoshiaki Takahashi
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
ORGANIC LIGHT-EMITTING DEVICE
Publication number
20090091249
Publication date
Apr 9, 2009
Showa Denko K.K.
Tetsuhiko Yamaguchi
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
Seed coating composition, coated seed, and coating method
Publication number
20060240983
Publication date
Oct 26, 2006
SHOWA DENKO K.K.
Tetsuhiko Yamaguchi
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information
Patent Application
Photosensitive compositions and pattern formation method
Publication number
20010012597
Publication date
Aug 9, 2001
Masaharu Watanabe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Photosensitive compositions and pattern formation method
Publication number
20010003633
Publication date
Jun 14, 2001
Masaharu Watanabe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY