Hiroyuki OZAWA

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Konosu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Vacuum switch and vacuum switchgear
- Patent number 8,227,720
- Issue date Jul 24, 2012
- Hitachi, Ltd.
- Kenji Tsuchiya
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vacuum insulated switchgear
- Patent number 8,035,054
- Issue date Oct 11, 2011
- Hitachi, Ltd.
- Hiroyuki Ozawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Inverter module for train traction systems
- Patent number 6,842,352
- Issue date Jan 11, 2005
- Hitachi, Ltd.
- Kazushi Naito
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power semiconductor device
- Patent number 5,539,244
- Issue date Jul 23, 1996
- Hitachi, Ltd.
- Mutsuhiro Mori
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
VACUUM SWITCH AND VACUUM SWITCHGEAR
- Publication number 20100000973
- Publication date Jan 7, 2010
- Hitachi, Ltd.
- Kenji TSUCHIYA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
VACUUM INSULATED SWITCHGEAR
- Publication number 20090159568
- Publication date Jun 25, 2009
- Hiroyuki OZAWA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Inverter module for train traction systems
- Publication number 20040141347
- Publication date Jul 22, 2004
- Kazushi Naito
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER