Tetsu Ishiguro

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Gas-insulated switch
- Patent number 6,831,244
- Issue date Dec 14, 2004
- Hitachi, Ltd.
- Hideo Kawamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Gas-insulated switch
- Patent number 6,762,387
- Issue date Jul 13, 2004
- Hitachi, Ltd.
- Hideo Kawamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Gas-insulated switch
- Patent number 6,717,088
- Issue date Apr 6, 2004
- Hitachi, Ltd.
- Hideo Kawamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Puffer type gas circuit breaker
- Patent number 6,696,657
- Issue date Feb 24, 2004
- Hitachi, Ltd.
- Makoto Hirose
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Gas-insulated switch
- Publication number 20040211757
- Publication date Oct 28, 2004
- Hitachi, Ltd.
- Hideo Kawamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Gas-insulated switch
- Publication number 20040020899
- Publication date Feb 5, 2004
- Hitachi, Ltd.
- Hideo Kawamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Gas-insulated switch
- Publication number 20030201250
- Publication date Oct 30, 2003
- Hitachi, Ltd.
- Hideo Kawamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Puffer type gas circuit breaker
- Publication number 20030094437
- Publication date May 22, 2003
- Makoto Hirose
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Gas-insulated switch
- Publication number 20030015499
- Publication date Jan 23, 2003
- Hideo Kawamoto
- H01 - BASIC ELECTRIC ELEMENTS