Keiji OKUMURA

Person

Matsumoto-city, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Insulated-gate semiconductor device and method of manufacturing the...
- Patent number 12,074,200
- Issue date Aug 27, 2024
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device
- Patent number 12,040,361
- Issue date Jul 16, 2024
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device and method of manufacturing same
- Patent number 11,984,498
- Issue date May 14, 2024
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device
- Patent number 11,908,929
- Issue date Feb 20, 2024
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Insulated-gate semiconductor device and method of manufacturing the...
- Patent number 11,798,993
- Issue date Oct 24, 2023
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Silicon carbide semiconductor device and silicon carbide semiconduc...
- Patent number 11,695,045
- Issue date Jul 4, 2023
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device and method of manufacturing semiconductor device
- Patent number 11,637,199
- Issue date Apr 25, 2023
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Current concentration-suppressed electronic circuit, and semiconduc...
- Patent number 11,631,668
- Issue date Apr 18, 2023
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Insulated-gate semiconductor device
- Patent number 11,610,969
- Issue date Mar 21, 2023
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device
- Patent number 11,489,071
- Issue date Nov 1, 2022
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device
- Patent number 11,430,714
- Issue date Aug 30, 2022
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Insulated-gate semiconductor device and method of manufacturing the...
- Patent number 11,329,151
- Issue date May 10, 2022
- Fuji Electric Co., Ltd.
- Akimasa Kinoshita
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Silicon carbide semiconductor device and method of manufacturing th...
- Patent number 11,276,757
- Issue date Mar 15, 2022
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device and method of manufacturing semiconductor device
- Patent number 11,257,945
- Issue date Feb 22, 2022
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Insulated-gate semiconductor device and method of manufacturing the...
- Patent number 11,177,350
- Issue date Nov 16, 2021
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device
- Patent number 11,164,859
- Issue date Nov 2, 2021
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of manufacturing silicon carbide semiconductor device
- Patent number 11,139,377
- Issue date Oct 5, 2021
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Silicon carbide semiconductor device and method of manufacturing si...
- Patent number 11,139,376
- Issue date Oct 5, 2021
- Fuji Electric Co., Ltd.
- Akimasa Kinoshita
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Silicon carbide semiconductor device and method of manufacturing si...
- Patent number 11,114,560
- Issue date Sep 7, 2021
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Silicon carbide semiconductor device and method of manufacturing si...
- Patent number 11,063,123
- Issue date Jul 13, 2021
- Fuji Electric Co., Ltd.
- Shin'ichi Nakamata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device
- Patent number 10,998,410
- Issue date May 4, 2021
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device and method of manufacturing same
- Patent number 10,840,369
- Issue date Nov 17, 2020
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Silicon carbide semiconductor device and silicon carbide semiconduc...
- Patent number 10,840,340
- Issue date Nov 17, 2020
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device
- Patent number 10,833,189
- Issue date Nov 10, 2020
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Insulated gate semiconductor device and method of manufacturing same
- Patent number 10,777,677
- Issue date Sep 15, 2020
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device
- Patent number 10,777,678
- Issue date Sep 15, 2020
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device and method of manufacturing same
- Patent number 10,686,066
- Issue date Jun 16, 2020
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Insulated-gate semiconductor device and method of manufacturing the...
- Patent number 10,672,874
- Issue date Jun 2, 2020
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device
- Patent number 10,600,864
- Issue date Mar 24, 2020
- Fuji Electric Co., Ltd.
- Akimasa Kinoshita
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Insulated-gate semiconductor device and method of manufacturing the...
- Patent number 10,529,848
- Issue date Jan 7, 2020
- Fuji Electric Co., Ltd.
- Keiji Okumura
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
SILICON CARBIDE SEMICONDUCTOR DEVICE
- Publication number 20240387724
- Publication date Nov 21, 2024
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SILICON CARBIDE SEMICONDUCTOR DEVICE
- Publication number 20240387725
- Publication date Nov 21, 2024
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SAME
- Publication number 20240250167
- Publication date Jul 25, 2024
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME
- Publication number 20240170569
- Publication date May 23, 2024
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE
- Publication number 20240145589
- Publication date May 2, 2024
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
INSULATED-GATE SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE...
- Publication number 20240014270
- Publication date Jan 11, 2024
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
INSULATED-GATE SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE...
- Publication number 20230154986
- Publication date May 18, 2023
- FUJI ELECTRIC CO., LTD.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE
- Publication number 20230049039
- Publication date Feb 16, 2023
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METHOD OF MANUFACTURING SILICON CARBIDE SEMICONDUCTOR DEVICE
- Publication number 20220367294
- Publication date Nov 17, 2022
- Fuji Electric Co., Ltd.
- Hidetatsu NAKAMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METHOD OF MANUFACTURING SILICON CARBIDE SEMICONDUCTOR DEVICE
- Publication number 20220367274
- Publication date Nov 17, 2022
- Fuji Electric Co., Ltd.
- Hidetatsu NAKAMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE
- Publication number 20220238655
- Publication date Jul 28, 2022
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
ELECTRONIC CIRCUIT AND SEMICONDUCTOR MODULE
- Publication number 20220216199
- Publication date Jul 7, 2022
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE
- Publication number 20220216335
- Publication date Jul 7, 2022
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE
- Publication number 20220140136
- Publication date May 5, 2022
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
INSULATED-GATE SEMICONDUCTOR DEVICE
- Publication number 20220013637
- Publication date Jan 13, 2022
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE
- Publication number 20210408278
- Publication date Dec 30, 2021
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
ELECTRONIC CIRCUIT, SEMICONDUCTOR MODULE, AND SEMICONDUCTOR APPARATUS
- Publication number 20210193651
- Publication date Jun 24, 2021
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SILICON CARBIDE SEMICONDUCTOR DEVICE AND SILICON CARBIDE SEMICONDUC...
- Publication number 20210020751
- Publication date Jan 21, 2021
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE
- Publication number 20210013128
- Publication date Jan 14, 2021
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SAME
- Publication number 20210013339
- Publication date Jan 14, 2021
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SILICON CARBIDE SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SI...
- Publication number 20200303541
- Publication date Sep 24, 2020
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METHOD OF MANUFACTURING SILICON CARBIDE SEMICONDUCTOR DEVICE
- Publication number 20200295141
- Publication date Sep 17, 2020
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE
- Publication number 20200294989
- Publication date Sep 17, 2020
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE
- Publication number 20200266294
- Publication date Aug 20, 2020
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
INSULATED-GATE SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE...
- Publication number 20200235210
- Publication date Jul 23, 2020
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE
- Publication number 20200152748
- Publication date May 14, 2020
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SILICON CARBIDE SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SI...
- Publication number 20200119147
- Publication date Apr 16, 2020
- Fuji Electric Co., Ltd.
- Akimasa KINOSHITA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SILICON CARBIDE SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SI...
- Publication number 20200091299
- Publication date Mar 19, 2020
- Fuji Electric Co., Ltd.
- Shin'ichi NAKAMATA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE
- Publication number 20200091339
- Publication date Mar 19, 2020
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
INSULATED-GATE SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE...
- Publication number 20200058740
- Publication date Feb 20, 2020
- Fuji Electric Co., Ltd.
- Keiji OKUMURA
- H01 - BASIC ELECTRIC ELEMENTS

Keiji OKUMURA

Person

Patents Grantslast 30 patents

Insulated-gate semiconductor device and method of manufacturing the...

Semiconductor device

Semiconductor device and method of manufacturing same

Semiconductor device

Insulated-gate semiconductor device and method of manufacturing the...

Silicon carbide semiconductor device and silicon carbide semiconduc...

Semiconductor device and method of manufacturing semiconductor device

Current concentration-suppressed electronic circuit, and semiconduc...

Insulated-gate semiconductor device

Semiconductor device

Semiconductor device

Insulated-gate semiconductor device and method of manufacturing the...

Silicon carbide semiconductor device and method of manufacturing th...

Semiconductor device and method of manufacturing semiconductor device

Insulated-gate semiconductor device and method of manufacturing the...

Semiconductor device

Method of manufacturing silicon carbide semiconductor device

Silicon carbide semiconductor device and method of manufacturing si...

Silicon carbide semiconductor device and method of manufacturing si...

Silicon carbide semiconductor device and method of manufacturing si...

Semiconductor device

Semiconductor device and method of manufacturing same

Silicon carbide semiconductor device and silicon carbide semiconduc...

Semiconductor device

Insulated gate semiconductor device and method of manufacturing same

Semiconductor device

Semiconductor device and method of manufacturing same

Insulated-gate semiconductor device and method of manufacturing the...

Semiconductor device

Insulated-gate semiconductor device and method of manufacturing the...

Patents Applicationslast 30 patents

SILICON CARBIDE SEMICONDUCTOR DEVICE

SILICON CARBIDE SEMICONDUCTOR DEVICE

SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SAME

SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME

SEMICONDUCTOR DEVICE

INSULATED-GATE SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE...

INSULATED-GATE SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE...

SEMICONDUCTOR DEVICE

METHOD OF MANUFACTURING SILICON CARBIDE SEMICONDUCTOR DEVICE

METHOD OF MANUFACTURING SILICON CARBIDE SEMICONDUCTOR DEVICE

SEMICONDUCTOR DEVICE

ELECTRONIC CIRCUIT AND SEMICONDUCTOR MODULE

SEMICONDUCTOR DEVICE

SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE

INSULATED-GATE SEMICONDUCTOR DEVICE

SEMICONDUCTOR DEVICE

ELECTRONIC CIRCUIT, SEMICONDUCTOR MODULE, AND SEMICONDUCTOR APPARATUS

SILICON CARBIDE SEMICONDUCTOR DEVICE AND SILICON CARBIDE SEMICONDUC...

SEMICONDUCTOR DEVICE

SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SAME

SILICON CARBIDE SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SI...

METHOD OF MANUFACTURING SILICON CARBIDE SEMICONDUCTOR DEVICE

SEMICONDUCTOR DEVICE

SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE

INSULATED-GATE SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE...

SEMICONDUCTOR DEVICE

SILICON CARBIDE SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SI...

SILICON CARBIDE SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SI...

SEMICONDUCTOR DEVICE

INSULATED-GATE SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE...