Yasuhiro Yasaka

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of assembling wound rotor of vertical type adjustable speed...
- Patent number 4,926,541
- Issue date May 22, 1990
- Hitachi, Ltd.
- Shinsaku Hakuta
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Variable-speed power generating system
- Patent number 4,870,339
- Issue date Sep 26, 1989
- Hitachi Ltd.
- Yosio Furukawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Salient pole rotor with shielding rods between adjacent poles
- Patent number 4,274,027
- Issue date Jun 16, 1981
- Hitachi, Ltd.
- Shigeo Higuchi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Rotor with salient poles and shield plates between the poles
- Patent number 4,246,505
- Issue date Jan 20, 1981
- Hitachi, Ltd.
- Yasuhiro Yasaka
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Brushless alternating-current generating apparatus and method for m...
- Publication number 20020047356
- Publication date Apr 25, 2002
- Hideo Tanahashi
- G01 - MEASURING TESTING