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Tadashi Sakaue
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Hitachi, JP
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last 30 patents
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Patent Grant
Gate turn-off thyristor of multi-emitter type
Patent number
5,051,806
Issue date
Sep 24, 1991
Hitachi, Ltd.
Toshihide Ujihara
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Thyristor of overvoltage self-protection type
Patent number
5,003,369
Issue date
Mar 26, 1991
Hitachi, Ltd.
Kazuyoshi Kanda
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Gate turn-off thyristor of multi-emitter type
Patent number
4,868,625
Issue date
Sep 19, 1989
Hitachi, Ltd.
Toshihide Ujihara
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Pressure contact semiconductor device
Patent number
4,775,916
Issue date
Oct 4, 1988
Hitachi Ltd.
Shigeyasu Kouzuchi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor device including means for alleviating stress caused...
Patent number
4,305,088
Issue date
Dec 8, 1981
Hitachi, Ltd.
Kazutoyo Narita
H01 - BASIC ELECTRIC ELEMENTS