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Kaori Tsubouchi
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Ibaraki-shi, JP
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Patents Grants
last 30 patents
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Patent Grant
Optical member and optical product provided therewith
Patent number
6,885,415
Issue date
Apr 26, 2005
Sumitomo Chemical Company, Limited
Ryuma Kuroda
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Foamed thermoplastic resin sheet and manufacturing method of the same
Patent number
6,815,047
Issue date
Nov 9, 2004
Sumitomo Chemical Company, Limited
Takeo Kitayama
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Manufacturing device of foamed thermoplastic resin sheet
Patent number
6,520,759
Issue date
Feb 18, 2003
Sumitomo Chemical Company, Limited
Takeo Kitayama
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Polypropylene-based foamed sheet
Patent number
6,124,025
Issue date
Sep 26, 2000
Sumitomo Chemical Company, Limited
Takeo Kitayama
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Patents Applications
last 30 patents
Information
Patent Application
Optical member and optical product having the same
Publication number
20030179460
Publication date
Sep 25, 2003
Ryuma Kuroda
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
MANUFACTURING DEVICE OF FOAMED THERMOPLASTIC RESIGN SHEET
Publication number
20020048614
Publication date
Apr 25, 2002
TAKEO KITAYAMA
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL