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Masaki Hachida
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Hitachi, JP
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Patents Grants
last 30 patents
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Patent Grant
Gas insulated switchgear apparatus
Patent number
5,757,614
Issue date
May 26, 1998
Hitachi, Ltd.
Masaki Hachida
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Gas insulated switchgear
Patent number
5,581,439
Issue date
Dec 3, 1996
Hitachi, Ltd.
Masaki Hachida
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Patents Applications
last 30 patents
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Patent Application
Gas-insulated switch
Publication number
20020149904
Publication date
Oct 17, 2002
Masaki Hachida
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER