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Hidekazu Aoyagi
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Niiza-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
LED having a reflector layer of improved contact ohmicity
Patent number
7,675,070
Issue date
Mar 9, 2010
Sanken Electric Co., Ltd.
Hidekazu Aoyagi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Light-emitting semiconductor device of improved efficiency
Patent number
7,498,609
Issue date
Mar 3, 2009
Sanken Electric Co., Ltd.
Hitoshi Murofushi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Light-emitting semiconductor device
Patent number
7,456,435
Issue date
Nov 25, 2008
Sanken Electric Co., Ltd.
Hidekazu Aoyagi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Light-emitting semiconductor device having an overvoltage protector
Patent number
7,405,431
Issue date
Jul 29, 2008
Sanken Electric Co., Ltd.
Hidekazu Aoyagi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Light-emitting semiconductor device
Patent number
7,199,401
Issue date
Apr 3, 2007
Sanken Electric Co., Ltd.
Mikio Tazima
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
NITRIDE SEMICONDUCTOR DEVICE HAVING A SILVER-BASE ALLOY ELECTRODE
Publication number
20070114515
Publication date
May 24, 2007
Sanken Electric Co., Ltd
Hidekazu Aoyagi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
LED HAVING A REFLECTOR LAYER OF IMPROVED CONTACT OHMICITY AND METHO...
Publication number
20070102711
Publication date
May 10, 2007
Sanken Electric Co., Ltd
Hidekazu Aoyagi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Method of fabricating light-emitting semiconductor device
Publication number
20060275937
Publication date
Dec 7, 2006
Sanken Electric Co., Ltd.
Hidekazu Aoyagi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Migration-proof light-emitting semiconductor device and method of f...
Publication number
20060065901
Publication date
Mar 30, 2006
Sanken Electric Co., Ltd.
Hidekazu Aoyagi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Light-emitting semiconductor device having an overvoltage protector...
Publication number
20060056123
Publication date
Mar 16, 2006
Sanken Electric Co., Ltd.
Hidekazu Aoyagi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Light-emitting semiconductor device and method of fabrication
Publication number
20060001032
Publication date
Jan 5, 2006
Sanken Electric Co., Ltd.
Hitoshi Murofushi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Light-emitting semiconductor device and method of fabrication
Publication number
20050184300
Publication date
Aug 25, 2005
Mikio Tazima
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Light-emitting semiconductor device and method of fabrication
Publication number
20050110029
Publication date
May 26, 2005
Hidekazu Aoyagi
H01 - BASIC ELECTRIC ELEMENTS