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Wei ZHANG
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Hitachi-shi, Ibaraki, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical current transformer for gas-insulated apparatus
Patent number
9,116,176
Issue date
Aug 25, 2015
Hitachi, Ltd.
Wei Zhang
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Gas circuit breaker
Patent number
8,957,341
Issue date
Feb 17, 2015
Hitachi, Ltd.
Wei Zhang
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Single-phase optical current transformer
Patent number
8,933,686
Issue date
Jan 13, 2015
Hitachi, Ltd.
Wei Zhang
G01 - MEASURING TESTING
Information
Patent Grant
Insulating spacer with built-in optical fiber
Patent number
8,847,084
Issue date
Sep 30, 2014
Hitachi, Ltd.
Wei Zhang
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Patents Applications
last 30 patents
Information
Patent Application
GAS CIRCUIT BREAKER
Publication number
20130161290
Publication date
Jun 27, 2013
Hitachi, Ltd
Wei ZHANG
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
OPTICAL CURRENT TRANSFORMER FOR GAS-INSULATED APPARATUS
Publication number
20130093409
Publication date
Apr 18, 2013
Hitachi, Ltd
Wei Zhang
G01 - MEASURING TESTING
Information
Patent Application
Insulating Spacer with Built-In Optical Fiber
Publication number
20130025933
Publication date
Jan 31, 2013
Hitachi, Ltd
Wei Zhang
G01 - MEASURING TESTING
Information
Patent Application
Single-Phase Optical Current Transformer
Publication number
20120262150
Publication date
Oct 18, 2012
Hitachi, Ltd
Wei Zhang
G01 - MEASURING TESTING