Ryotaro Hanabuchi

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Vacuum switch
- Patent number 6,951,993
- Issue date Oct 4, 2005
- Hitachi, Ltd.
- Shuuichi Kikukawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vacuum switch
- Patent number 6,855,903
- Issue date Feb 15, 2005
- Hitachi, Ltd.
- Shuuichi Kikukawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vacuum switch and vacuum switchgear using the same
- Patent number 6,498,314
- Issue date Dec 24, 2002
- Hitachi, Ltd.
- Takuya Miyo
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Vacuum switch
- Publication number 20040222192
- Publication date Nov 11, 2004
- Hitachi, Ltd.
- Shuuichi Kikukawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Vacuum switch
- Publication number 20030230553
- Publication date Dec 18, 2003
- Shuuichi Kikukawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Vacuum switch and vacuum switchgear using the same
- Publication number 20020134756
- Publication date Sep 26, 2002
- Hitachi, Ltd.
- Takuya Miyo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Vacuum switch and vacuum switchgear using the same
- Publication number 20010040146
- Publication date Nov 15, 2001
- Takuya Miyo
- H01 - BASIC ELECTRIC ELEMENTS