Ryuji Iyotani

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Hitachi-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Semiconductor power converting apparatus
- Patent number 6,380,796
- Issue date Apr 30, 2002
- Hitachi, Ltd.
- Hiromitsu Sakai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Semiconductor power converting apparatus
- Patent number 6,242,968
- Issue date Jun 5, 2001
- Hitachi, Ltd.
- Hiromitsu Sakai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Gate drive power source for electric power converter
- Patent number 5,424,937
- Issue date Jun 13, 1995
- Hitachi, Ltd.
- Ryuji Iyotani
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Gate controlling apparatus for a thyristor valve
- Patent number 4,223,236
- Issue date Sep 16, 1980
- Hitachi, Ltd.
- Ryuji Iyotani
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Gate controlling apparatus for a thyristor valve
- Patent number 4,100,434
- Issue date Jul 11, 1978
- Hitachi, Ltd.
- Ryuji Iyotani
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Semiconductor power converting apparatus
- Publication number 20010015670
- Publication date Aug 23, 2001
- Hitachi, Ltd.
- Hiromitsu Sakai
- H03 - BASIC ELECTRONIC CIRCUITRY