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Kazuya Ooishi
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Ibaraki, JP
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last 30 patents
Information
Patent Grant
Substation with surge arresters
Patent number
5,712,756
Issue date
Jan 27, 1998
Hitachi, Ltd.
Jun Ozawa
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Arrestor for gas insulated switchgear
Patent number
5,585,996
Issue date
Dec 17, 1996
Hitachi, Ltd.
Jun Ozawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Arrester for gas insulated switchgear device
Patent number
5,373,279
Issue date
Dec 13, 1994
Hitachi, Ltd.
Jun Ozawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Zinc oxide type arrester
Patent number
5,359,316
Issue date
Oct 25, 1994
Hitachi Ltd.
Jun Ozawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Lightning arrester on tower for power transmission
Patent number
5,283,709
Issue date
Feb 1, 1994
Hitachi, Ltd.
Shingo Shirakawa
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER