Ryuichi Toba

Person

Chiyoda-ku, JP

People

Patents Grantslast 30 patents

Information Patent Grant
III nitride semiconductor device and method of manufacturing the same
- Patent number 9,537,053
- Issue date Jan 3, 2017
- BBSA LIMITED
- Meoung Whan Cho
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vertically structured group III nitride semiconductor LED chip and...
- Patent number 9,502,603
- Issue date Nov 22, 2016
- Wavesquare Inc.
- Meoung Whan Cho
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device and method of manufacturing the same
- Patent number 9,184,338
- Issue date Nov 10, 2015
- BBSA LIMITED
- Meoung Whan Cho
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vertically structured group III nitride semiconductor LED chip and...
- Patent number 9,012,935
- Issue date Apr 21, 2015
- Wavesquare Inc.
- Meoung Whan Cho
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device and manufacturing method therefor
- Patent number 8,963,290
- Issue date Feb 24, 2015
- Dowa Electronics Materials Co., Ltd.
- Ryuichi Toba
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vertically structured group III nitride semiconductor LED chip and...
- Patent number 8,962,362
- Issue date Feb 24, 2015
- Wavesquare Inc.
- Meoung Whan Cho
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device assembly and semiconductor device and method o...
- Patent number 8,921,227
- Issue date Dec 30, 2014
- Dowa Electronics Materials Co., Ltd.
- Ryuichi Toba
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Group III nitride semiconductor growth substrate, group III nitride...
- Patent number 8,878,189
- Issue date Nov 4, 2014
- Dowa Holdings Co., Ltd.
- Ryuichi Toba
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Lighting element
- Patent number D711582
- Issue date Aug 19, 2014
- Wavesquare Inc.
- Meoung Whan Cho
- D26 - Lighting
Information Patent Grant
Lighting element
- Patent number D711583
- Issue date Aug 19, 2014
- Wavesquare Inc.
- Meoung Whan Cho
- D26 - Lighting
Information Patent Grant
Lighting element
- Patent number D711581
- Issue date Aug 19, 2014
- Wavesquare Inc.
- Meoung Whan Cho
- D26 - Lighting
Information Patent Grant
III-nitride semiconductor growth substrate, III-nitride semiconduct...
- Patent number 8,736,025
- Issue date May 27, 2014
- Dowa Electroncs Materials Co., Ltd.
- Ryuichi Toba
- C30 - CRYSTAL GROWTH
Information Patent Grant
Lighting elements
- Patent number D703863
- Issue date Apr 29, 2014
- Wavesquare Inc.
- Meoung Whan Cho
- D26 - Lighting
Information Patent Grant
Lighting elements
- Patent number D703862
- Issue date Apr 29, 2014
- Wavesquare Inc.
- Meoung Whan Cho
- D26 - Lighting
Information Patent Grant
Group III nitride semiconductor and a manufacturing method thereof
- Patent number 8,216,869
- Issue date Jul 10, 2012
- Dowa Electronics Material Co., Ltd.
- Takafumi Yao
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Notched compound semiconductor wafer
- Patent number 7,256,478
- Issue date Aug 14, 2007
- Dowa Mining Co., LTD
- Ryuichi Toba
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Notched compound semiconductor wafer
- Patent number 7,256,476
- Issue date Aug 14, 2007
- Dowa Mining Co., LTD
- Ryuichi Toba
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Notched compound semiconductor wafer
- Patent number 7,256,477
- Issue date Aug 14, 2007
- Dowa Mining Co., LTD
- Ryuichi Toba
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Notched compound semiconductor wafer
- Patent number 6,998,700
- Issue date Feb 14, 2006
- Dowa Mining Co., LTD
- Ryuichi Toba
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Surface preparation method and semiconductor device
- Patent number 6,336,970
- Issue date Jan 8, 2002
- Dowa Mining Co., Ltd.
- Ryo Sakamoto
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
GAAS WAFER, GAAS WAFER GROUP, AND METHOD OF PRODUCING GAAS INGOT
- Publication number 20240392475
- Publication date Nov 28, 2024
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Naoya SUNACHI
- C30 - CRYSTAL GROWTH
Information Patent Application
GaAs WAFER AND METHOD OF PRODUCING GaAs INGOT
- Publication number 20230392291
- Publication date Dec 7, 2023
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Naoya SUNACHI
- C30 - CRYSTAL GROWTH
Information Patent Application
GaAs INGOT AND METHOD OF PRODUCING GaAs INGOT, AND GaAs WAFER
- Publication number 20230243067
- Publication date Aug 3, 2023
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Naoya SUNACHI
- C30 - CRYSTAL GROWTH
Information Patent Application
ULTRAVIOLET LIGHT RECEIVING DEVICE
- Publication number 20230040765
- Publication date Feb 9, 2023
- DOWA HOLDINGS Co., Ltd.
- Ryuichi TOBA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
III NITRIDE SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME
- Publication number 20150263234
- Publication date Sep 17, 2015
- BBSA LIMITED
- Meoung Whan Cho
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
III NITRIDE SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME
- Publication number 20150187887
- Publication date Jul 2, 2015
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Meoung Whan Cho
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
VERTICALLY STRUCTURED GROUP III NITRIDE SEMICONDUCTOR LED CHIP AND...
- Publication number 20140319557
- Publication date Oct 30, 2014
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Meoung Whan Cho
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME
- Publication number 20140284770
- Publication date Sep 25, 2014
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Meoung Whan Cho
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LIGHT-EMITTING ELEMENT CHIP AND MANUFACTURING METHOD THEREFOR
- Publication number 20140217457
- Publication date Aug 7, 2014
- WAVESQUARE INC.
- Meoung Whan Cho
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREFOR
- Publication number 20140015105
- Publication date Jan 16, 2014
- WAVESQUARE INC.
- Ryuichi Toba
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
VERTICALLY STRUCTURED GROUP III NITRIDE SEMICONDUCTOR LED CHIP AND...
- Publication number 20140001511
- Publication date Jan 2, 2014
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Meoung Whan CHO
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE ASSEMBLY AND SEMICONDUCTOR DEVICE AND METHOD O...
- Publication number 20130307133
- Publication date Nov 21, 2013
- Ryuichi TOBA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METHOD OF PRODUCING GROUP III NITRIDE SEMICONDUCTOR GROWTH SUBSTRATE
- Publication number 20130137246
- Publication date May 30, 2013
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Ryuichi Toba
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
VERTICALLY STRUCTURED GROUP III NITRIDE SEMICONDUCTOR LED CHIP AND...
- Publication number 20120248458
- Publication date Oct 4, 2012
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Meoung Whan Cho
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
GROUP III NITRIDE SEMICONDUCTOR GROWTH SUBSTRATE, GROUP III NITRIDE...
- Publication number 20120061683
- Publication date Mar 15, 2012
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Ryuichi Toba
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
III-NITRIDE SEMICONDUCTOR GROWTH SUBSTRATE, III-NITRIDE SEMICONDUCT...
- Publication number 20110254135
- Publication date Oct 20, 2011
- Dowa Holdings Co., Ltd.
- Ryuichi Toba
- C30 - CRYSTAL GROWTH
Information Patent Application
Group III nitride semiconductor and a manufacturing method thereof
- Publication number 20090057835
- Publication date Mar 5, 2009
- TOHOKU TECHNO ARCH CO., LTD.
- Takafumi Yao
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Notched compound semiconductor wafer
- Publication number 20060113559
- Publication date Jun 1, 2006
- DOWA MINING CO., LTD.
- Ryuichi Toba
- C30 - CRYSTAL GROWTH
Information Patent Application
Notched compound semiconductor wafer
- Publication number 20060113558
- Publication date Jun 1, 2006
- DOWA MINING CO., LTD.
- Ryuichi Toba
- C30 - CRYSTAL GROWTH
Information Patent Application
Notched compound semiconductor wafer
- Publication number 20060060883
- Publication date Mar 23, 2006
- DOWA MINING CO., LTD.
- Ryuichi Toba
- C30 - CRYSTAL GROWTH
Information Patent Application
Notched compound semiconductor wafer
- Publication number 20040242001
- Publication date Dec 2, 2004
- Ryuichi Toba
- C30 - CRYSTAL GROWTH

Ryuichi Toba

Person

Patents Grantslast 30 patents

III nitride semiconductor device and method of manufacturing the same

Vertically structured group III nitride semiconductor LED chip and...

Semiconductor device and method of manufacturing the same

Vertically structured group III nitride semiconductor LED chip and...

Semiconductor device and manufacturing method therefor

Vertically structured group III nitride semiconductor LED chip and...

Semiconductor device assembly and semiconductor device and method o...

Group III nitride semiconductor growth substrate, group III nitride...

Lighting element

Lighting element

Lighting element

III-nitride semiconductor growth substrate, III-nitride semiconduct...

Lighting elements

Lighting elements

Group III nitride semiconductor and a manufacturing method thereof

Notched compound semiconductor wafer

Notched compound semiconductor wafer

Notched compound semiconductor wafer

Notched compound semiconductor wafer

Surface preparation method and semiconductor device

Patents Applicationslast 30 patents

GAAS WAFER, GAAS WAFER GROUP, AND METHOD OF PRODUCING GAAS INGOT

GaAs WAFER AND METHOD OF PRODUCING GaAs INGOT

GaAs INGOT AND METHOD OF PRODUCING GaAs INGOT, AND GaAs WAFER

ULTRAVIOLET LIGHT RECEIVING DEVICE

III NITRIDE SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME

III NITRIDE SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME

VERTICALLY STRUCTURED GROUP III NITRIDE SEMICONDUCTOR LED CHIP AND...

SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME

LIGHT-EMITTING ELEMENT CHIP AND MANUFACTURING METHOD THEREFOR

SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREFOR

VERTICALLY STRUCTURED GROUP III NITRIDE SEMICONDUCTOR LED CHIP AND...

SEMICONDUCTOR DEVICE ASSEMBLY AND SEMICONDUCTOR DEVICE AND METHOD O...

METHOD OF PRODUCING GROUP III NITRIDE SEMICONDUCTOR GROWTH SUBSTRATE

VERTICALLY STRUCTURED GROUP III NITRIDE SEMICONDUCTOR LED CHIP AND...

GROUP III NITRIDE SEMICONDUCTOR GROWTH SUBSTRATE, GROUP III NITRIDE...

III-NITRIDE SEMICONDUCTOR GROWTH SUBSTRATE, III-NITRIDE SEMICONDUCT...

Group III nitride semiconductor and a manufacturing method thereof

Notched compound semiconductor wafer

Notched compound semiconductor wafer

Notched compound semiconductor wafer

Notched compound semiconductor wafer