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Shoichi Washizuka
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Yokohama, JP
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Patents Grants
last 30 patents
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Patent Grant
Method of manufacturing a semiconductor light-emitting element
Patent number
7,037,738
Issue date
May 2, 2006
Kabushiki Kaisha Toshiba
Hitoshi Sugiyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Light emitting element and manufacturing method for the same
Patent number
6,924,513
Issue date
Aug 2, 2005
Kabushiki Kaisha Toshiba
Yasuhiko Akaike
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method for evaluating an epitaxial wafer for a light emitting devic...
Patent number
6,373,069
Issue date
Apr 16, 2002
Kabushiki Kaisha Toshiba
Yasuhiko Akaike
G01 - MEASURING TESTING
Information
Patent Grant
Apparatus for measuring the electrical characteristics of a semicon...
Patent number
5,179,333
Issue date
Jan 12, 1993
Kabushiki Kaisha Toshiba
Shoichi Washizuka
G01 - MEASURING TESTING
Patents Applications
last 30 patents
Information
Patent Application
Semiconductor light-emitting element and method of manufacturing th...
Publication number
20050145864
Publication date
Jul 7, 2005
Hitoshi Sugiyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Light emitting element and manufacturing method for the same
Publication number
20040026700
Publication date
Feb 12, 2004
Kabushiki Kaisha Toshiba
Yasuhiko Akaike
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Semiconductor light-emitting element and method of manufacturing th...
Publication number
20030178626
Publication date
Sep 25, 2003
Hitoshi Sugiyama
H01 - BASIC ELECTRIC ELEMENTS