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Yoshimi Sakai
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Method for manufacturing discoid optical record medium and discoid...
Patent number
7,368,156
Issue date
May 6, 2008
TDK Corporation
Mamoru Usami
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical recording medium and method for manufacturing the same
Patent number
7,205,038
Issue date
Apr 17, 2007
TDK Corporation
Junichi Satou
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical recording medium
Patent number
7,052,759
Issue date
May 30, 2006
TDK Corporation
Junichi Satou
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical recording medium and method for making the same
Patent number
6,977,107
Issue date
Dec 20, 2005
TDK Corporation
Junichi Satou
G11 - INFORMATION STORAGE
Information
Patent Grant
Stamper, mold system, recording medium substrate, recording medium,...
Patent number
6,835,435
Issue date
Dec 28, 2004
TDK Corporation
Yuuichi Kawaguchi
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Stamper, mold system, recording medium substrate, recording medium,...
Patent number
6,815,029
Issue date
Nov 9, 2004
TDK Corporation
Yuuichi Kawaguchi
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Apparatus for making a plurality of optical record disc subtrates
Patent number
5,648,105
Issue date
Jul 15, 1997
TDK Corporation
Seiki Shimazu
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method of making a plurality of optical record disc substrates
Patent number
5,458,821
Issue date
Oct 17, 1995
TDK Corporation
Seiki Shimazu
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Guard panel for tape cassettes and method and apparatus for manufac...
Patent number
4,799,120
Issue date
Jan 17, 1989
TDK Corporation
Yoshimi Sakai
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Patents Applications
last 30 patents
Information
Patent Application
Optical recording medium
Publication number
20060044992
Publication date
Mar 2, 2006
TDK Corporation
Jun-ichi Satoh
G11 - INFORMATION STORAGE
Information
Patent Application
Optical recording medium
Publication number
20050271854
Publication date
Dec 8, 2005
TDK Corporation
Junichi Satou
G11 - INFORMATION STORAGE
Information
Patent Application
Optical recording medium and method of fabricating the same
Publication number
20050271855
Publication date
Dec 8, 2005
TDK Corporation
Junichi Satou
G11 - INFORMATION STORAGE
Information
Patent Application
Optical recording medium
Publication number
20050238837
Publication date
Oct 27, 2005
Junichi Satou
B32 - LAYERED PRODUCTS
Information
Patent Application
Stamper, mold system, recording medium substrate, recording medium,...
Publication number
20050034617
Publication date
Feb 17, 2005
TDK Corporation
Yuuichi Kawaguchi
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
Method for manufacturing discoid optical record medium and discoid...
Publication number
20050007945
Publication date
Jan 13, 2005
Mamoru Usami
G11 - INFORMATION STORAGE
Information
Patent Application
Optical disk manufacturing method
Publication number
20040244026
Publication date
Dec 2, 2004
Mamoru Usami
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
Stamper, mold system, recording medium substrate, recording medium,...
Publication number
20040101650
Publication date
May 27, 2004
TDK Corporation
Yuuichi Kawaguchi
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
Method for manufacturing disc-shaped substrate material
Publication number
20030085479
Publication date
May 8, 2003
Mamoru Usami
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
Stamper, mold system, recording medium substrate, recording medium,...
Publication number
20020142128
Publication date
Oct 3, 2002
Yuuichi Kawaguchi
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL