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Takaki Niwa
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Semiconductor apparatus
Patent number
7,834,461
Issue date
Nov 16, 2010
NEC Electronics Corporation
Shuji Asai
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Heterojunction bipolar transistor
Patent number
7,821,037
Issue date
Oct 26, 2010
NEC Electronics Corporation
Takaki Niwa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor device
Patent number
7,304,333
Issue date
Dec 4, 2007
NEC Compound Semiconductor Devices, Ltd.
Takaki Niwa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor device and method of manufacturing the same
Patent number
7,038,244
Issue date
May 2, 2006
NEC Compound Semiconductor Devices, Ltd.
Takashi Ishigaki
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Heterojunction bipolar transistor and semiconductor integrated circ...
Patent number
6,881,988
Issue date
Apr 19, 2005
NEC Compound Semiconductor Devices, Ltd.
Takaki Niwa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Heterojunction bipolar transistor with band gap graded emitter
Patent number
6,355,947
Issue date
Mar 12, 2002
NEC Corporation
Takaki Niwa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
High frequency hetero junction type field effect transistor using m...
Patent number
5,959,317
Issue date
Sep 28, 1999
NEC Corporation
Takaki Niwa
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
HETEROJUNCTION BIPOLAR TRANSISTOR
Publication number
20080116489
Publication date
May 22, 2008
NEC Electronics Corporation
Takaki Niwa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
SEMICONDUCTOR APPARATUS
Publication number
20080073752
Publication date
Mar 27, 2008
NEC ELECTRONICS CORPORATION
Shuji ASAI
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Semiconductor device and method of manufacturing the same
Publication number
20050110045
Publication date
May 26, 2005
NEC Compound Semiconductor Devices, Ltd.
Takashi Ishigaki
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Semiconductor device
Publication number
20050104088
Publication date
May 19, 2005
NEC Compound Semiconductor Devices, Ltd.
Takaki Niwa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Heterojunction bipolar transistor and semiconductor integrated circ...
Publication number
20030136956
Publication date
Jul 24, 2003
NEC COMPOUND SEMICONDUCTOR DEVICES, LTD.
Takaki Niwa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Compound semiconductor device having heterojunction bipolar transis...
Publication number
20020195620
Publication date
Dec 26, 2002
NEC COMPOUND SEMICONDUCTOR DEVICES, LTD.
Masahiro Tanomura
H01 - BASIC ELECTRIC ELEMENTS