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Yutaka KOKAI
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Tokyo, JP
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Patents Grants
last 30 patents
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Patent Grant
Renewable energy system stabilization system and system stabilizati...
Patent number
11,916,394
Issue date
Feb 27, 2024
Hitachi, Ltd.
Yutaka Kokai
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Power system operation assisting device and method, and oscillation...
Patent number
11,404,873
Issue date
Aug 2, 2022
Hitachi, Ltd.
Kenta Kirihara
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Patents Applications
last 30 patents
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Patent Application
RENEWABLE ENERGY SYSTEM STABILIZATION SYSTEM AND SYSTEM STABILIZATI...
Publication number
20230012079
Publication date
Jan 12, 2023
Hitachi, Ltd
Yutaka KOKAI
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
POWER SYSTEM OPERATION ASSISTING DEVICE AND METHOD, AND OSCILLATION...
Publication number
20210126453
Publication date
Apr 29, 2021
Hitachi, Ltd
Kenta KIRIHARA
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER