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Tomoyuki OHSHIMA
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Tokyo, JP
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Patents Grants
last 30 patents
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Patent Grant
Method of manufacturing semiconductor device and semiconductor manu...
Patent number
8,241,515
Issue date
Aug 14, 2012
Oki Semiconductor Co., Ltd.
Kazuhiko Ohmuro
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor device manufacturing method
Patent number
7,981,787
Issue date
Jul 19, 2011
Oki Semiconductor Co., Ltd.
Takayuki Izumi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Field effect transistor comprising compound semiconductor
Patent number
7,705,377
Issue date
Apr 27, 2010
Oki Semiconductor Co., Ltd.
Tomoyuki Ohshima
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
High electron mobility transistor with mesa structure and reduced g...
Patent number
7,608,864
Issue date
Oct 27, 2009
Oki Semiconductor Co., Ltd.
Shinichi Hoshi
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
Semiconductor device manufacturing method
Publication number
20100048016
Publication date
Feb 25, 2010
Oki Semiconductor Co., Ltd.
Takayuki IZUMI
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Method of manufacturing semiconductor device and semiconductor manu...
Publication number
20080242103
Publication date
Oct 2, 2008
Oki Electric Industry Co., Ltd.
Kazuhiko Ohmuro
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Field effect transistor comprising compound semiconductor
Publication number
20070075333
Publication date
Apr 5, 2007
Tomoyuki Ohshima
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Semiconductor device and its manufacturing method
Publication number
20050161704
Publication date
Jul 28, 2005
Shinichi Hoshi
H01 - BASIC ELECTRIC ELEMENTS