Takao Takenaka

Person

Gunma, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Thin film silicon wafer and method for manufacturing the same
- Patent number 8,728,870
- Issue date May 20, 2014
- Shin-Etsu Handotai Co., Ltd.
- Satoshi Tobe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Algainp light-emitting device
- Patent number 5,739,553
- Issue date Apr 14, 1998
- Shin-Etsu Handotai, Co., Ltd.
- Nobuhiko Noto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of evaluating lifetime related quality of semiconductor surface
- Patent number 5,612,539
- Issue date Mar 18, 1997
- Shin-Etsu Handotai Co., Ltd.
- Ryoji Hoshi
- G01 - MEASURING TESTING
Information Patent Grant
Semiconductor light emitting device with current spreading layer
- Patent number 5,600,158
- Issue date Feb 4, 1997
- Shin-Etsu Handotai Co., Ltd.
- Nobuhiko Noto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of evaluating a silicon single crystal
- Patent number 5,598,452
- Issue date Jan 28, 1997
- Shin-Etsu Handotai Co., Ltd.
- Hiroshi Takeno
- G01 - MEASURING TESTING
Information Patent Grant
Semiconductor light emitting device and methods of manufacturing it
- Patent number 5,597,761
- Issue date Jan 28, 1997
- Shin-Etsu Handotai Co. Ltd.
- Keizo Adomi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for fabricating a semiconductor device
- Patent number 5,585,305
- Issue date Dec 17, 1996
- Shin-Etsu Handotai Co. Ltd.
- Masato Yamada
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of evaluating silicon wafers
- Patent number 5,533,387
- Issue date Jul 9, 1996
- Shin-Etsu Handotai Co., Ltd.
- Ken Aihara
- B82 - NANO-TECHNOLOGY
Information Patent Grant
AlGaInP light emitting device
- Patent number 5,444,269
- Issue date Aug 22, 1995
- Shin-Etsu Handotai Co., Ltd.
- Keizo Adomi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor light emitting device having AlGaAsP light reflecting...
- Patent number 5,442,203
- Issue date Aug 15, 1995
- Shin-Etsu Handotai Co., Ltd.
- Keizo Adomi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor light emitting device with nitrogen doping
- Patent number 5,442,201
- Issue date Aug 15, 1995
- Shin-Etsu Handotai Co., Ltd.
- Keizo Adomi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of manufacturing a light-emitting semiconductor device subst...
- Patent number 5,401,684
- Issue date Mar 28, 1995
- Shin-Etsu Handatai Co., Ltd.
- Masato Yamada
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method and apparatus for determination of interstitial oxygen conce...
- Patent number 5,386,118
- Issue date Jan 31, 1995
- Shin-Etsu Handotai Co., Ltd.
- Yutaka Kitagawara
- C30 - CRYSTAL GROWTH
Information Patent Grant
Apparatus for liquid-phase epitaxial growth
- Patent number 5,366,552
- Issue date Nov 22, 1994
- Shin-Etsu Handotai Co., Ltd.
- Masato Yamada
- C30 - CRYSTAL GROWTH
Information Patent Grant
Method of making epitaxial wafers
- Patent number 5,362,683
- Issue date Nov 8, 1994
- Shin-Etsu Handotai Co., Ltd.
- Takao Takenaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Light emitting device with double heterostructure
- Patent number 5,323,027
- Issue date Jun 21, 1994
- Shin-Etsu Handotai Kabushiki Kaisha
- Masato Yamada
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for evaluation of spatial distribution of deep level concent...
- Patent number 5,302,832
- Issue date Apr 12, 1994
- Shin-Etsu Handotai Co., Ltd.
- Yutaka Kitagawara
- G01 - MEASURING TESTING
Information Patent Grant
Rotating furnace tube having a non-rotating slidable work holder fo...
- Patent number 5,254,172
- Issue date Oct 19, 1993
- Shin-Etsu Handotai Co., Ltd.
- Toshio Otaki
- C30 - CRYSTAL GROWTH
Information Patent Grant
Method for heat-treating gallium arsenide monocrystals
- Patent number 5,228,927
- Issue date Jul 20, 1993
- Shin-Etsu Handotai Company Limited
- Yutaka Kitagawara
- C30 - CRYSTAL GROWTH
Information Patent Grant
Method for heat-treating gallium arsenide monocrystals
- Patent number 5,209,811
- Issue date May 11, 1993
- Shin-Etsu Handotai Company Limited of Japan
- Yutaka Kitagawara
- C30 - CRYSTAL GROWTH
Information Patent Grant
Light-emitting semiconductor device
- Patent number 4,905,058
- Issue date Feb 27, 1990
- Shin-Etsu Handotai Company Limited
- Masato Yamada
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
THIN FILM SILICON WAFER AND METHOD FOR MANUFACTURING THE SAME
- Publication number 20100171195
- Publication date Jul 8, 2010
- Shin-Etsu Handotai Co., Ltd.
- Satoshi Tobe
- H01 - BASIC ELECTRIC ELEMENTS

Takao Takenaka

Person

Patents Grantslast 30 patents

Thin film silicon wafer and method for manufacturing the same

Algainp light-emitting device

Method of evaluating lifetime related quality of semiconductor surface

Semiconductor light emitting device with current spreading layer

Method of evaluating a silicon single crystal

Semiconductor light emitting device and methods of manufacturing it

Method for fabricating a semiconductor device

Method of evaluating silicon wafers

AlGaInP light emitting device

Semiconductor light emitting device having AlGaAsP light reflecting...

Semiconductor light emitting device with nitrogen doping

Method of manufacturing a light-emitting semiconductor device subst...

Method and apparatus for determination of interstitial oxygen conce...

Apparatus for liquid-phase epitaxial growth

Method of making epitaxial wafers

Light emitting device with double heterostructure

Method for evaluation of spatial distribution of deep level concent...

Rotating furnace tube having a non-rotating slidable work holder fo...

Method for heat-treating gallium arsenide monocrystals

Method for heat-treating gallium arsenide monocrystals

Light-emitting semiconductor device

Patents Applicationslast 30 patents

THIN FILM SILICON WAFER AND METHOD FOR MANUFACTURING THE SAME