Hisao KAWAKAMI

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Operating device or vacuum switch
- Patent number 9,378,913
- Issue date Jun 28, 2016
- Hitachi, Ltd.
- Takashi Sato
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vacuum insulating switch gear
- Patent number 8,110,771
- Issue date Feb 7, 2012
- Hitachi, Ltd.
- Keiichi Takahashi
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Operating Device or Vacuum Switch
- Publication number 20150318132
- Publication date Nov 5, 2015
- Hitachi, Ltd
- Takashi SATO
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Operation Device, Vacuum Opening/Closing Device, and Method for Ass...
- Publication number 20150198260
- Publication date Jul 16, 2015
- Hitachi, Ltd
- Takamitsu Hae
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
VACUUM INSULATING SWITCH GEAR
- Publication number 20100243611
- Publication date Sep 30, 2010
- Hitachi, Ltd
- Keiichi TAKAHASHI
- H01 - BASIC ELECTRIC ELEMENTS