Hachidai Ito

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Fuchu, JP

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Patents Grantslast 30 patents

Information Patent Grant
System for protecting and controlling substation main circuit compo...
- Patent number 6,845,301
- Issue date Jan 18, 2005
- Kabushiki Kaisha Toshiba
- Koichi Hamamatsu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Digital protective relay system
- Patent number 6,678,134
- Issue date Jan 13, 2004
- Kabushiki Kaisha Toshiba
- Hideaki Sugiura
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Digital protective relay system
- Patent number 4,709,295
- Issue date Nov 24, 1987
- Kabushiki Kaisha Toshiba
- Mitsuru Yamaura
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
System for protecting and controlling substation main circuit compo...
- Publication number 20020116092
- Publication date Aug 22, 2002
- Koichi Hamamatsu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Digital protective relay system
- Publication number 20020057544
- Publication date May 16, 2002
- Hideaki Sugiura
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER