Yoshinori Usui

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Katsuta, JP

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Patents Grantslast 30 patents

Information Patent Grant
Power semiconductors connected antiparallel via heatsinks
- Patent number 4,864,385
- Issue date Sep 5, 1989
- Hitachi, Ltd.
- Hiroshi Itahana
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Apparatus for vapor-cooling a semiconductor
- Patent number 4,694,323
- Issue date Sep 15, 1987
- Hitachi, Ltd.
- Hiroshi Itahana
- H01 - BASIC ELECTRIC ELEMENTS