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Jun Nukaga
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Tomobe-machi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Insulation spacer and gas insulation shutoff apparatus using the in...
Patent number
11,070,039
Issue date
Jul 20, 2021
Hitachi, Ltd.
Hirokazu Furui
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Gas-blast circuit breaker
Patent number
10,991,529
Issue date
Apr 27, 2021
Hitachi, Ltd.
Hideyuki Kotsuji
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Oil leakage detector and oil leakage detection method and image pro...
Patent number
10,755,442
Issue date
Aug 25, 2020
Hitachi, Ltd.
Li Lu
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Leakage oil detection system
Patent number
10,234,355
Issue date
Mar 19, 2019
Hitachi, Ltd.
Li Lu
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Leakage oil detector system and method
Patent number
10,113,933
Issue date
Oct 30, 2018
Hitachi, Ltd.
Li Lu
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Stationary induction electrical apparatus
Patent number
10,090,095
Issue date
Oct 2, 2018
Hitachi, Ltd.
Li Lu
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Oil leakage detector and oil leakage detection method
Patent number
9,898,830
Issue date
Feb 20, 2018
Hitachi, Ltd.
Li Lu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Power switchgear
Patent number
9,613,762
Issue date
Apr 4, 2017
Hitachi, Ltd.
Jun Nukaga
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Gas circuit breaker
Patent number
5,837,955
Issue date
Nov 17, 1998
Hitachi, Ltd.
Tomoaki Utsumi
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
Gas-Blast Circuit Breaker
Publication number
20200279704
Publication date
Sep 3, 2020
Hitachi, Ltd
Hideyuki KOTSUJI
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Insulation Spacer and Gas Insulation Shutoff Apparatus Using the In...
Publication number
20200083678
Publication date
Mar 12, 2020
Hitachi, Ltd
Hirokazu FURUI
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Oil Leakage Detector and Oil Leakage Detection Method and Image Pro...
Publication number
20180137652
Publication date
May 17, 2018
Hitachi, Ltd
Li LU
G01 - MEASURING TESTING
Information
Patent Application
STATIONARY INDUCTION ELECTRICAL APPARATUS
Publication number
20170301454
Publication date
Oct 19, 2017
Hitachi, Ltd
Li LU
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
LEAKAGE OIL DETECTOR SYSTEM AND METHOD
Publication number
20170234762
Publication date
Aug 17, 2017
Hitachi, Ltd
Li LU
G01 - MEASURING TESTING
Information
Patent Application
Leakage Oil Detection System
Publication number
20170016796
Publication date
Jan 19, 2017
Hitachi, Ltd
Li LU
G01 - MEASURING TESTING
Information
Patent Application
Oil Leakage Detector and Oil Leakage Detection Method
Publication number
20160275699
Publication date
Sep 22, 2016
Hitachi, Ltd
Li LU
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Switchgear
Publication number
20160049268
Publication date
Feb 18, 2016
Hitachi, Ltd
Toshiaki ROKUNOHE
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Power Switchgear
Publication number
20160035501
Publication date
Feb 4, 2016
Hitachi, Ltd
Jun NUKAGA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
GAS INSULATED SWITCHGEAR
Publication number
20140360984
Publication date
Dec 11, 2014
Hitachi, Ltd
Tomohiro MORIYAMA
H01 - BASIC ELECTRIC ELEMENTS