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Hitachi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Electromagnet and actuating mechanism for switch device, using thereof
Patent number
7,075,398
Issue date
Jul 11, 2006
Hitachi, Ltd.
Ayumu Morita
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Electromagnet and actuating mechanism for switch device, using thereof
Patent number
6,940,376
Issue date
Sep 6, 2005
Hitachi, Ltd.
Ayumu Morita
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Electromagnet and actuating mechanism for switch device, using thereof
Patent number
6,816,048
Issue date
Nov 9, 2004
Hitachi, Ltd.
Ayumu Morita
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Vacuum switchgear
Patent number
6,268,579
Issue date
Jul 31, 2001
Hitachi, Ltd.
Satoru Kajiwara
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Vacuum switch and a vacuum switchgear using the same
Patent number
6,259,051
Issue date
Jul 10, 2001
Hitachi, Ltd.
Toru Tanimizu
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Vacuum switch and a vacuum switchgear using the same
Patent number
6,144,005
Issue date
Nov 7, 2000
Hitachi, Ltd.
Toru Tanimizu
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
Electromagnet and actuating mechanism for switch device, using thereof
Publication number
20060208841
Publication date
Sep 21, 2006
Ayumu Morita
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Electromagnet and actuating mechanism for switch device, using thereof
Publication number
20040217834
Publication date
Nov 4, 2004
Hitachi, Ltd.
Ayumu Morita
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Electromagnet and actuating mechanism for switch device, using thereof
Publication number
20040164828
Publication date
Aug 26, 2004
Hitachi, Ltd.
Ayumu Morita
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Electromagnet and actuating mechanism for switch device, using thereof
Publication number
20020093408
Publication date
Jul 18, 2002
Ayumu Morita
H01 - BASIC ELECTRIC ELEMENTS