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Daisuke Ebisawa
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Hydraulic drive for a switchgear
Patent number
10,229,799
Issue date
Mar 12, 2019
Hitachi, Ltd.
Shinji Seto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Abrasion resistant material, puffer cylinder, and puffer type gas c...
Patent number
10,128,071
Issue date
Nov 13, 2018
Hitachi, Ltd.
Masahiko Ono
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Gas circuit breaker
Patent number
9,870,884
Issue date
Jan 16, 2018
Hitachi, Ltd.
Masanao Terada
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Wear-resistant material, method for producing the same, puffer cyli...
Patent number
9,653,239
Issue date
May 16, 2017
Hitachi, Ltd.
Masahiko Ono
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Wear-resistant material, puffer cylinder, and puffer-type gas circu...
Patent number
9,604,881
Issue date
Mar 28, 2017
Hitachi, Ltd.
Masahiko Ono
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Gas-insulated switchgear
Patent number
9,425,589
Issue date
Aug 23, 2016
Hitachi, Ltd.
Hiroaki Hashimoto
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Hydraulic operating apparatus for switch
Patent number
6,875,941
Issue date
Apr 5, 2005
Japan AE Power Systems Corporation
Hideo Kawamoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Hydraulic pressure actuating apparatus for circuit breaker
Patent number
6,815,629
Issue date
Nov 9, 2004
Hitachi, Ltd.
Shinji Seto
F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Patents Applications
last 30 patents
Information
Patent Application
SWITCHGEAR DRIVING DEVICE
Publication number
20180025867
Publication date
Jan 25, 2018
Hitachi, Ltd
Shinji SETO
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Gas Circuit Breaker
Publication number
20170278654
Publication date
Sep 28, 2017
Hitachi, Ltd
Masanao TERADA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
ABRASION RESISTANT MATERIAL, PUFFER CYLINDER, AND PUFFER TYPE GAS C...
Publication number
20170271113
Publication date
Sep 21, 2017
Hitachi, Ltd
Masahiko ONO
B32 - LAYERED PRODUCTS
Information
Patent Application
Gas-Insulated Switchgear
Publication number
20150236485
Publication date
Aug 20, 2015
Hitachi, Ltd
Hiroaki Hashimoto
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Wear-Resistant Material, Method for Producing the Same, Puffer Cyli...
Publication number
20150060408
Publication date
Mar 5, 2015
Hitachi, Ltd
Masahiko ONO
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Fluid-Pressure Drive Device for Circuit Breaker
Publication number
20150053074
Publication date
Feb 26, 2015
Hitachi, Ltd
Shinji SETO
F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information
Patent Application
WEAR-RESISTANT MATERIAL, PUFFER CYLINDER, AND PUFFER-TYPE GAS CIRCU...
Publication number
20140367360
Publication date
Dec 18, 2014
Masahiko ONO
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
Hydraulic operating apparatus for switch
Publication number
20050006349
Publication date
Jan 13, 2005
Hideo Kawamoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Hydraulic pressure actuating apparatus for circuit breaker
Publication number
20030213774
Publication date
Nov 20, 2003
Hitachi, Ltd.
Shinji Seto
F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL