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Kai Kazufumi
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Oita-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Transparent composite material
Patent number
8,518,524
Issue date
Aug 27, 2013
Showa Denko K.K.
Yasushi Kadowaki
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Norbornene copolymer and production method thereof
Patent number
8,163,860
Issue date
Apr 24, 2012
Showa Denko K.K.
Shojiro Kaita
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Transparent conductive substrate
Patent number
8,119,039
Issue date
Feb 21, 2012
Showa Denko K.K.
Yasushi Kadowaki
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Radically polymerizable compound having a cyclic dithiocarbonate group
Patent number
7,939,612
Issue date
May 10, 2011
Showa Denko K.K.
Keisuke Ohta
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Curable polymer compound
Patent number
7,569,327
Issue date
Aug 4, 2009
Showda Denko K.K.
Hirotoshi Kamata
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Radically polymerizable sulfur-containing compound and radically po...
Patent number
7,518,001
Issue date
Apr 14, 2009
Showa Denko K.K.
Keisuke Ohta
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polymerizable compound, polymerizable composition and cured product...
Patent number
7,049,350
Issue date
May 23, 2006
Showa Denko K.K.
Yoshihiro Honda
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Fumarate derivative, method for producing the same
Patent number
7,038,076
Issue date
May 2, 2006
Showa Denko K.K.
Kazufumi Kai
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
POLYVALENT CARBOXYLIC ACID ESTER, PROCESS FOR PRODUCING THE CARBOXY...
Patent number
6,846,900
Issue date
Jan 25, 2005
Showa Denko K.K.
Kazuhiko Ooga
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Plastic lens composition, plastic lens, and process for producing t...
Patent number
6,740,721
Issue date
May 25, 2004
Showa Denko K.K.
Kazuhiko Ooga
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Ether compound, production thereof and curable compositions
Patent number
6,376,702
Issue date
Apr 23, 2002
Showa Denko K.K.
Kazufumi Kai
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Ether compounds and process for producing the same
Patent number
6,204,410
Issue date
Mar 20, 2001
Showa Denko Kabushiki Kaisha
Kazufumi Kai
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
LIGHT CONTROL PANEL AND OPTICAL IMAGING DEVICE
Publication number
20170341342
Publication date
Nov 30, 2017
SHOWA DENKO K.K.
Kazufumi KAI
B32 - LAYERED PRODUCTS
Information
Patent Application
NORBORNENE COPOLYMER AND PRODUCTION METHOD THEREOF
Publication number
20110282014
Publication date
Nov 17, 2011
Riken
Shojiro Kaita
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
POLYURETHANE AND PRODUCTION METHOD THEREOF
Publication number
20110124815
Publication date
May 26, 2011
Showa Denko K.K.
Nobuyuki Kibino
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
ALLYL ALCOHOL COPOLYMER AND PRODUCTION METHOD THEREOF
Publication number
20100286354
Publication date
Nov 11, 2010
Showa Denko K.K.
Nobuyuki Kibino
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
TRANSPARENT COMPOSITE MATERIAL
Publication number
20090324922
Publication date
Dec 31, 2009
Showa Denko K.K.
Yasushi Kadowaki
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
RADICALLY POLYMERIZABLE COMPOUND HAVING A CYCLIC DITHIOCARBONATE GROUP
Publication number
20090270574
Publication date
Oct 29, 2009
Showa Denko K.K.
Keisuke Ohta
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Radically Polymerizable Sulfur-Containing Compound and Radically Po...
Publication number
20090192279
Publication date
Jul 30, 2009
SHOWA DENKO K.K.
Keisuke Ohta
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
TRANSPARENT CONDUCTIVE SUBSTRATE
Publication number
20090166589
Publication date
Jul 2, 2009
SHOWA DENKO K.K.
Yasushi Kadowaki
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Radically Polymerizable Sulfur-Containing Compound And Radically Po...
Publication number
20070208149
Publication date
Sep 6, 2007
SHOWA DENKO K.K.
Keisuke Ohta
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Curable polymer compound
Publication number
20070021571
Publication date
Jan 25, 2007
Hirotoshi Kamata
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Plastic lens material, plastic lens composition, plastic lens obtai...
Publication number
20040236064
Publication date
Nov 25, 2004
Kazuhiko Ooga
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Polymerizable compound, polymerizable composition and cured product...
Publication number
20040235980
Publication date
Nov 25, 2004
Yoshihiro Honda
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Plastic lens composition, plastic lens, and process for producing t...
Publication number
20030208019
Publication date
Nov 6, 2003
Kazuhiko Ooga
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Plastic lens composition, plastic lens,and process for producing th...
Publication number
20030149141
Publication date
Aug 7, 2003
Kazuhiko Ooga
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Novel polyvalent carboxylic acid ester and their use in plastic len...
Publication number
20030144447
Publication date
Jul 31, 2003
Kazuhiko Ooga
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Material for plastic lens, production process of the material, comp...
Publication number
20030131548
Publication date
Jul 17, 2003
Kazuhiko Ooga
G02 - OPTICS
Information
Patent Application
Fumarate derivative, method for producing the same
Publication number
20030060563
Publication date
Mar 27, 2003
Kazufumi Kai
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Method for producing fumaric acid esters
Publication number
20020002306
Publication date
Jan 3, 2002
Yasushi Kadowaki
C07 - ORGANIC CHEMISTRY