Hiroki Honma

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Hitachi-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Gas insulation switch
- Patent number 6,538,877
- Issue date Mar 25, 2003
- Hitachi, Ltd.
- Tokio Yamagiwa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Gas insulation switch
- Patent number 6,373,687
- Issue date Apr 16, 2002
- Hitachi, Ltd.
- Tokio Yamagiwa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Gas insulation switch
- Patent number 6,292,356
- Issue date Sep 18, 2001
- Hitachi, Ltd.
- Tokio Yamagiwa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Gas insulation switch
- Publication number 20020071242
- Publication date Jun 13, 2002
- Hitachi, Ltd.
- Tokio Yamagiwa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Gas insulation switch
- Publication number 20020008958
- Publication date Jan 24, 2002
- Hitachi, Ltd.
- Tokio Yamagiwa
- H01 - BASIC ELECTRIC ELEMENTS