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Masaru TATEMI
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Diagnostic method of switchgear and device thereof
Patent number
11,249,137
Issue date
Feb 15, 2022
Hitachi, Ltd.
Masaru Tatemi
G01 - MEASURING TESTING
Information
Patent Grant
Switch operating characteristic monitoring device, switch equipped...
Patent number
10,615,590
Issue date
Apr 7, 2020
Hitachi, Ltd.
Masaru Tatemi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Gas leak detection device and gas leak detection method
Patent number
10,190,935
Issue date
Jan 29, 2019
Hitachi, Ltd.
Hisao Inami
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Patents Applications
last 30 patents
Information
Patent Application
Diagnostic Method of Switchgear and Device Thereof
Publication number
20200363473
Publication date
Nov 19, 2020
Hitachi, Ltd
Masaru TATEMI
G01 - MEASURING TESTING
Information
Patent Application
Switch Operating Characteristic Monitoring Device, Switch Equipped...
Publication number
20180062382
Publication date
Mar 1, 2018
Hitachi, Ltd
Masaru TATEMI
G01 - MEASURING TESTING
Information
Patent Application
Gas Leak Detection Device and Gas Leak Detection Method
Publication number
20170030799
Publication date
Feb 2, 2017
Hitachi, Ltd
Hisao INAMI
G01 - MEASURING TESTING