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Tomoya Sugahara
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Niiza-shi, JP
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Patents Grants
last 30 patents
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Patent Grant
Method of making substrates for nitride semiconductor devices
Patent number
7,186,620
Issue date
Mar 6, 2007
Sanken Electric Co., Ltd.
Koji Otsuka
H01 - BASIC ELECTRIC ELEMENTS
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last 30 patents
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Patent Application
Wafer for compound semiconductor devices, and method of fabrication
Publication number
20060068601
Publication date
Mar 30, 2006
Jeong-Sik Lee
H01 - BASIC ELECTRIC ELEMENTS
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Patent Application
Method of making substrates for nitride semiconductor devices
Publication number
20050118752
Publication date
Jun 2, 2005
Koji Otsuka
C30 - CRYSTAL GROWTH