Yukio Tokiwa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for controlling the output voltage of an AC el...
- Patent number 5,349,522
- Issue date Sep 20, 1994
- Hitachi, Ltd.
- Hiroo Konishi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power converting apparatus capable of suppressing a fault current
- Patent number 5,179,510
- Issue date Jan 12, 1993
- The Tokyo Electric Power Company, Incorporated
- Yukio Tokiwa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Control apparatus of DC power coupling system
- Patent number 5,010,467
- Issue date Apr 23, 1991
- The Tokyo Electric Power Co., Inc.
- Yukio Tokiwa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER