Katsuhiro Imai

Person

Nagoya, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Group-III element nitride semiconductor substrate
- Patent number 11,862,689
- Issue date Jan 2, 2024
- NGK Insulators, Ltd.
- Katsuhiro Imai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Group 13 nitride layer, composite substrate, and functional element
- Patent number 11,035,055
- Issue date Jun 15, 2021
- NGK Insulators, Ltd.
- Yoshinori Isoda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Underlying substrate including a seed crystal layer of a group 13 n...
- Patent number 10,947,638
- Issue date Mar 16, 2021
- NGK INSULATORS, LTD.
- Takayuki Hirao
- C30 - CRYSTAL GROWTH
Information Patent Grant
Free-standing substrate comprising polycrystalline group 13 element...
- Patent number 10,804,432
- Issue date Oct 13, 2020
- NGK Insulators, Ltd.
- Katsuhiro Imai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Free-standing substrate comprising polycrystalline group 13 element...
- Patent number 10,734,548
- Issue date Aug 4, 2020
- NGK Insulators, Ltd.
- Katsuhiro Imai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Polycrystalline gallium nitride self-supported substrate and light...
- Patent number 10,707,373
- Issue date Jul 7, 2020
- NGK Insulators, Ltd.
- Morimichi Watanabe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Heat discharge structures for light source devices and light source...
- Patent number 10,598,369
- Issue date Mar 24, 2020
- NGK Insulators, Ltd.
- Masahiko Namerikawa
- F21 - LIGHTING
Information Patent Grant
Supporting substrate for composite substrate and composite substrate
- Patent number 10,332,958
- Issue date Jun 25, 2019
- NGK Insulators, Ltd.
- Jun Yoshikawa
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Free-standing substrate, function element and method for producing...
- Patent number 10,249,494
- Issue date Apr 2, 2019
- NGK Insulators, Ltd.
- Takashi Yoshino
- C30 - CRYSTAL GROWTH
Information Patent Grant
Method for producing nitride of group-13 element, and melt composition
- Patent number 10,156,022
- Issue date Dec 18, 2018
- NGK Insulators, Ltd.
- Takayuki Hirao
- C30 - CRYSTAL GROWTH
Information Patent Grant
System and method for producing group 13 nitride crystals comprised...
- Patent number 10,138,570
- Issue date Nov 27, 2018
- NGK Insulators, Ltd.
- Takashi Yoshino
- C30 - CRYSTAL GROWTH
Information Patent Grant
Method for producing nitride crystal
- Patent number 10,041,186
- Issue date Aug 7, 2018
- NGK Insulators, Ltd.
- Katsuhiro Imai
- C30 - CRYSTAL GROWTH
Information Patent Grant
Method for separating group 13 element nitride layer, and composite...
- Patent number 9,960,316
- Issue date May 1, 2018
- NGK Insulators, Ltd.
- Katsuhiro Imai
- C30 - CRYSTAL GROWTH
Information Patent Grant
Zinc oxide sputtering target
- Patent number 9,919,931
- Issue date Mar 20, 2018
- NGK Insulators, Ltd.
- Jun Yoshikawa
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Composite substrate for light-emitting element and production metho...
- Patent number 9,893,234
- Issue date Feb 13, 2018
- NGK Insulators, Ltd.
- Morimichi Watanabe
- C30 - CRYSTAL GROWTH
Information Patent Grant
Method for producing zinc oxide single crystal
- Patent number 9,816,198
- Issue date Nov 14, 2017
- NGK Insulators, Ltd.
- Jun Yoshikawa
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Group 3B nitride crystal substrate
- Patent number 9,677,192
- Issue date Jun 13, 2017
- NGK Insulators, Ltd.
- Takanao Shimodaira
- C30 - CRYSTAL GROWTH
Information Patent Grant
Method for forming a single crystal by spraying the raw material on...
- Patent number 9,663,871
- Issue date May 30, 2017
- NGK Insulators, Ltd.
- Nobuyuki Kobayashi
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Gallium nitride substrates and functional devices
- Patent number 9,653,649
- Issue date May 16, 2017
- NGK Insulators, Ltd.
- Makoto Iwai
- C30 - CRYSTAL GROWTH
Information Patent Grant
Surface light-emission element using zinc oxide substrate
- Patent number 9,640,720
- Issue date May 2, 2017
- NGK Insulators, Ltd.
- Morimichi Watanabe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Photovoltaic element
- Patent number 9,627,568
- Issue date Apr 18, 2017
- NGK Insulators, Ltd.
- Mikiya Ichimura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Gallium nitride self-supported substrate, light-emitting device and...
- Patent number 9,548,418
- Issue date Jan 17, 2017
- NGK Insulators, Ltd.
- Morimichi Watanabe
- C30 - CRYSTAL GROWTH
Information Patent Grant
Zinc oxide powder and process for manufacturing same
- Patent number 9,327,994
- Issue date May 3, 2016
- NGK Insulators, Ltd.
- Jun Yoshikawa
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Zinc oxide sputtering target and method for producing same
- Patent number 9,318,307
- Issue date Apr 19, 2016
- NGK Insulators, Ltd.
- Jun Yoshikawa
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Gallium nitride self-supported substrate, light-emitting device and...
- Patent number 9,312,446
- Issue date Apr 12, 2016
- NGK Insulators, Ltd.
- Morimichi Watanabe
- C30 - CRYSTAL GROWTH
Information Patent Grant
Group 13 nitride crystal with stepped surface
- Patent number 9,290,861
- Issue date Mar 22, 2016
- NGK Insulators, Ltd.
- Takayuki Hirao
- C30 - CRYSTAL GROWTH
Information Patent Grant
Composite substrates and functional device
- Patent number 9,287,453
- Issue date Mar 15, 2016
- NGK Insulators, Ltd.
- Makoto Iwai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Process for producing a nitride single crystal and apparatus therefor
- Patent number 8,999,059
- Issue date Apr 7, 2015
- NGK Insulators, Ltd.
- Katsuhiro Imai
- C30 - CRYSTAL GROWTH
Information Patent Grant
Method for producing gallium nitride layer and seed crystal substra...
- Patent number 8,795,431
- Issue date Aug 5, 2014
- NGK Insulators, Ltd.
- Katsuhiro Imai
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Method for growing group 13 nitride crystal and group 13 nitride cr...
- Patent number 8,729,672
- Issue date May 20, 2014
- NGK Insulators, Ltd.
- Takanao Shimodaira
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

Information Patent Application
GROUP III ELEMENT NITRIDE SUBSTRATE AND PRODUCTION METHOD FOR GROUP...
- Publication number 20240344238
- Publication date Oct 17, 2024
- NGK Insulators, Ltd.
- Katsuhiro IMAI
- C30 - CRYSTAL GROWTH
Information Patent Application
GROUP III ELEMENT NITRIDE SEMICONDUCTOR SUBSTRATE, EPITAXIAL SUBSTR...
- Publication number 20240347604
- Publication date Oct 17, 2024
- NGK INSULATORS, LTD.
- Kentaro NONAKA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SPUTTERING TARGET
- Publication number 20240002997
- Publication date Jan 4, 2024
- NGK Insulators, Ltd.
- Kentaro NONAKA
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
GROUP-III ELEMENT NITRIDE SEMICONDUCTOR SUBSTRATE
- Publication number 20230395373
- Publication date Dec 7, 2023
- NGK Insulators, Ltd.
- Masahiro SAKAI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
GROUP-III ELEMENT NITRIDE SEMICONDUCTOR SUBSTRATE
- Publication number 20230352298
- Publication date Nov 2, 2023
- NGK Insulators, Ltd.
- Katsuhiro IMAI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
GROUP-III ELEMENT NITRIDE SEMICONDUCTOR SUBSTRATE
- Publication number 20230282711
- Publication date Sep 7, 2023
- NGK Insulators, Ltd.
- Katsuhiro IMAI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
GROUP-III ELEMENT NITRIDE SEMICONDUCTOR SUBSTRATE
- Publication number 20230246132
- Publication date Aug 3, 2023
- NGK Insulators, Ltd.
- Kentaro NONAKA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METHOD FOR PRODUCING GROUP 13 ELEMENT NITRIDE CRYSTAL LAYER, AND SE...
- Publication number 20230215969
- Publication date Jul 6, 2023
- NGK Insulators, Ltd.
- Masahiro SAKAI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METHOD FOR PRODUCING GROUP 13 ELEMENT NITRIDE CRYSTAL LAYER, AND SE...
- Publication number 20220199854
- Publication date Jun 23, 2022
- NGK Insulators, Ltd.
- Masahiro SAKAI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
GROUP 13 ELEMENT NITRIDE LAYER, FREE-STANDING SUBSTRATE, FUNCTIONAL...
- Publication number 20210013366
- Publication date Jan 14, 2021
- NGK Insulators, Ltd.
- Masahiro SAKAI
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Method of producing substrates including gallium nitride
- Publication number 20200411718
- Publication date Dec 31, 2020
- NGK Insulators, Ltd.
- Shuhei Higashihara
- C30 - CRYSTAL GROWTH
Information Patent Application
GROUP 13 NITRIDE LAYER, COMPOSITE SUBSTRATE, AND FUNCTIONAL ELEMENT
- Publication number 20190242029
- Publication date Aug 8, 2019
- NGK Insulators, Ltd.
- Yoshinori ISODA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
FREE-STANDING SUBSTRATE COMPRISING POLYCRYSTALLINE GROUP 13 ELEMENT...
- Publication number 20180350918
- Publication date Dec 6, 2018
- NGK Insulators, Ltd.
- Katsuhiro IMAI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
FREE-STANDING SUBSTRATE COMPRISING POLYCRYSTALLINE GROUP 13 ELEMENT...
- Publication number 20180351041
- Publication date Dec 6, 2018
- NGK Insulators, Ltd.
- Katsuhiro IMAI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
POLYCRYSTALLINE GALLIUM NITRIDE SELF-SUPPORTED SUBSTRATE AND LIGHT...
- Publication number 20180351038
- Publication date Dec 6, 2018
- NGK Insulators, Ltd.
- Morimichi WATANABE
- C30 - CRYSTAL GROWTH
Information Patent Application
Heat Discharge Structures for Light Source Devices and Light Source...
- Publication number 20180306428
- Publication date Oct 25, 2018
- NGK Insulators, Ltd.
- Masahiko Namerikawa
- F21 - LIGHTING
Information Patent Application
UNDERLYING SUBSTRATE, METHOD OF MANUFACTURING UNDERLYING SUBSTRATE,...
- Publication number 20180202067
- Publication date Jul 19, 2018
- NGK Insulators, Ltd.
- Takayuki HIRAO
- C30 - CRYSTAL GROWTH
Information Patent Application
FREE-STANDING SUBSTRATE, FUNCTION ELEMENT AND METHOD FOR PRODUCING...
- Publication number 20170330749
- Publication date Nov 16, 2017
- NGK Insulators, Ltd.
- Takashi YOSHINO
- C30 - CRYSTAL GROWTH
Information Patent Application
Method for Separating Group 13 Element Nitride Layer, and Composite...
- Publication number 20170263810
- Publication date Sep 14, 2017
- NGK Insulators, Ltd.
- Katsuhiro Imai
- C30 - CRYSTAL GROWTH
Information Patent Application
Method and Apparatus for Producing Group-13-Element Nitride Crystals
- Publication number 20170260644
- Publication date Sep 14, 2017
- NGK Insulators, Ltd.
- Takashi Yoshino
- C30 - CRYSTAL GROWTH
Information Patent Application
Heat Discharge Structures for Light Source Devices and Light Source...
- Publication number 20170211797
- Publication date Jul 27, 2017
- NGK Insulators, Ltd.
- Masahiko Namerikawa
- F21 - LIGHTING
Information Patent Application
Method for Producing Nitride Crystal
- Publication number 20160355945
- Publication date Dec 8, 2016
- NGK Insulators, Ltd.
- Katsuhiro Imai
- C30 - CRYSTAL GROWTH
Information Patent Application
Substrates Including Gallium Nitride Layers and a Method of Produci...
- Publication number 20160300980
- Publication date Oct 13, 2016
- NGK Insulators, Ltd.
- Shuhei Higashihara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
COMPOSITE SUBSTRATE FOR LIGHT-EMITTING ELEMENT AND PRODUCTION METHO...
- Publication number 20160293800
- Publication date Oct 6, 2016
- NGK Insulators, Ltd.
- Morimichi WATANABE
- C30 - CRYSTAL GROWTH
Information Patent Application
Method for Producing Nitride of Group-13 Element, and Melt Composition
- Publication number 20160168749
- Publication date Jun 16, 2016
- NGK Insulators, Ltd.
- Takayuki Hirao
- C30 - CRYSTAL GROWTH
Information Patent Application
GALLIUM NITRIDE SELF-SUPPORTED SUBSTRATE, LIGHT-EMITTING DEVICE AND...
- Publication number 20160172541
- Publication date Jun 16, 2016
- NGK Insulators, Ltd.
- Morimichi WATANABE
- C30 - CRYSTAL GROWTH
Information Patent Application
Gallium Nitride Substrates and Functional Devices
- Publication number 20160049554
- Publication date Feb 18, 2016
- NGK Insulators, Ltd.
- Makoto Iwai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SUPPORTING SUBSTRATE FOR COMPOSITE SUBSTRATE AND COMPOSITE SUBSTRATE
- Publication number 20160049469
- Publication date Feb 18, 2016
- NGK Insulators, Ltd.
- Jun YOSHIKAWA
- B32 - LAYERED PRODUCTS
Information Patent Application
PHOTOVOLTAIC ELEMENT
- Publication number 20160043261
- Publication date Feb 11, 2016
- NGK Insulators, Ltd.
- Mikiya ICHIMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Composite Substrates and Functional Device
- Publication number 20160005924
- Publication date Jan 7, 2016
- NGK Insulators, Ltd.
- Makoto Iwai
- H01 - BASIC ELECTRIC ELEMENTS

Katsuhiro Imai

Person

Patents Grantslast 30 patents

Group-III element nitride semiconductor substrate

Group 13 nitride layer, composite substrate, and functional element

Underlying substrate including a seed crystal layer of a group 13 n...

Free-standing substrate comprising polycrystalline group 13 element...

Free-standing substrate comprising polycrystalline group 13 element...

Polycrystalline gallium nitride self-supported substrate and light...

Heat discharge structures for light source devices and light source...

Supporting substrate for composite substrate and composite substrate

Free-standing substrate, function element and method for producing...

Method for producing nitride of group-13 element, and melt composition

System and method for producing group 13 nitride crystals comprised...

Method for producing nitride crystal

Method for separating group 13 element nitride layer, and composite...

Zinc oxide sputtering target

Composite substrate for light-emitting element and production metho...

Method for producing zinc oxide single crystal

Group 3B nitride crystal substrate

Method for forming a single crystal by spraying the raw material on...

Gallium nitride substrates and functional devices

Surface light-emission element using zinc oxide substrate

Photovoltaic element

Gallium nitride self-supported substrate, light-emitting device and...

Zinc oxide powder and process for manufacturing same

Zinc oxide sputtering target and method for producing same

Gallium nitride self-supported substrate, light-emitting device and...

Group 13 nitride crystal with stepped surface

Composite substrates and functional device

Process for producing a nitride single crystal and apparatus therefor

Method for producing gallium nitride layer and seed crystal substra...

Method for growing group 13 nitride crystal and group 13 nitride cr...

Patents Applicationslast 30 patents

GROUP III ELEMENT NITRIDE SUBSTRATE AND PRODUCTION METHOD FOR GROUP...

GROUP III ELEMENT NITRIDE SEMICONDUCTOR SUBSTRATE, EPITAXIAL SUBSTR...

SPUTTERING TARGET

GROUP-III ELEMENT NITRIDE SEMICONDUCTOR SUBSTRATE

GROUP-III ELEMENT NITRIDE SEMICONDUCTOR SUBSTRATE

GROUP-III ELEMENT NITRIDE SEMICONDUCTOR SUBSTRATE

GROUP-III ELEMENT NITRIDE SEMICONDUCTOR SUBSTRATE

METHOD FOR PRODUCING GROUP 13 ELEMENT NITRIDE CRYSTAL LAYER, AND SE...

METHOD FOR PRODUCING GROUP 13 ELEMENT NITRIDE CRYSTAL LAYER, AND SE...

GROUP 13 ELEMENT NITRIDE LAYER, FREE-STANDING SUBSTRATE, FUNCTIONAL...

Method of producing substrates including gallium nitride

GROUP 13 NITRIDE LAYER, COMPOSITE SUBSTRATE, AND FUNCTIONAL ELEMENT

FREE-STANDING SUBSTRATE COMPRISING POLYCRYSTALLINE GROUP 13 ELEMENT...

FREE-STANDING SUBSTRATE COMPRISING POLYCRYSTALLINE GROUP 13 ELEMENT...

POLYCRYSTALLINE GALLIUM NITRIDE SELF-SUPPORTED SUBSTRATE AND LIGHT...

Heat Discharge Structures for Light Source Devices and Light Source...

UNDERLYING SUBSTRATE, METHOD OF MANUFACTURING UNDERLYING SUBSTRATE,...

FREE-STANDING SUBSTRATE, FUNCTION ELEMENT AND METHOD FOR PRODUCING...

Method for Separating Group 13 Element Nitride Layer, and Composite...

Method and Apparatus for Producing Group-13-Element Nitride Crystals

Heat Discharge Structures for Light Source Devices and Light Source...

Method for Producing Nitride Crystal

Substrates Including Gallium Nitride Layers and a Method of Produci...

COMPOSITE SUBSTRATE FOR LIGHT-EMITTING ELEMENT AND PRODUCTION METHO...

Method for Producing Nitride of Group-13 Element, and Melt Composition

GALLIUM NITRIDE SELF-SUPPORTED SUBSTRATE, LIGHT-EMITTING DEVICE AND...

Gallium Nitride Substrates and Functional Devices

SUPPORTING SUBSTRATE FOR COMPOSITE SUBSTRATE AND COMPOSITE SUBSTRATE

PHOTOVOLTAIC ELEMENT

Composite Substrates and Functional Device