Naoki Nakatsugawa

Follow

Person

Hitachinaka, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Switchgear
- Patent number 8,189,325
- Issue date May 29, 2012
- Hitachi, Ltd.
- Takuya Kurogi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Solid insulated bus switchgear
- Patent number 8,045,322
- Issue date Oct 25, 2011
- Hitachi, Ltd.
- Takuya Kurogi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Earthing equipment for switchgear
- Patent number 7,983,023
- Issue date Jul 19, 2011
- Hitachi, Ltd.
- Kenichi Shoda
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Vacuum switch and a vacuum switchgear using the same
- Patent number 6,259,051
- Issue date Jul 10, 2001
- Hitachi, Ltd.
- Toru Tanimizu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vacuum switch and a vacuum switchgear using the same
- Patent number 6,144,005
- Issue date Nov 7, 2000
- Hitachi, Ltd.
- Toru Tanimizu
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
EARTHING EQUIPMENT FOR SWITCHGEAR
- Publication number 20100208416
- Publication date Aug 19, 2010
- Hitachi, Ltd
- Kenichi SHODA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SOLID INSULATED BUS SWITCHGEAR
- Publication number 20100002363
- Publication date Jan 7, 2010
- Hitachi, Ltd.
- Takuya KUROGI
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SWITCHGEAR
- Publication number 20090159569
- Publication date Jun 25, 2009
- Takuya KUROGI
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER