Yoshihiko Matsuda

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Hitachiota, JP

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Patents Grantslast 30 patents

Information Patent Grant
Commutation type DC breaker
- Patent number 8,270,128
- Issue date Sep 18, 2012
- Hitachi, Ltd.
- Noriaki Munakata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Circuit breaker and opening and closing method thereof
- Patent number 7,911,303
- Issue date Mar 22, 2011
- Hitachi, Ltd.
- Ayumu Morita
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
DC switchgear provided with a commutation-type DC circuit breaker
- Patent number 7,813,090
- Issue date Oct 12, 2010
- Hitachi, Ltd.
- Masato Suzuki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
COMMUTATION TYPE DC BREAKER
- Publication number 20100208392
- Publication date Aug 19, 2010
- Hitachi, Ltd
- Noriaki MUNAKATA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
DC SWITCHGEAR PROVIDED WITH A COMMUTATION-TYPE DC CIRCUIT BREAKER
- Publication number 20080259531
- Publication date Oct 23, 2008
- Masato SUZUKI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
CIRCUIT BREAKER AND OPENING AND CLOSING METHOD THEREOF
- Publication number 20080156775
- Publication date Jul 3, 2008
- Ayumu Morita
- H01 - BASIC ELECTRIC ELEMENTS