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Patents Grants
last 30 patents
Information
Patent Grant
Adjustment power procurement device and adjustment power procuring...
Patent number
12,155,209
Issue date
Nov 26, 2024
Hitachi, Ltd.
Yuki Tsujii
G05 - CONTROLLING REGULATING
Information
Patent Grant
Load frequency control device and load frequency control method
Patent number
11,811,409
Issue date
Nov 7, 2023
Hitachi, Ltd.
Yuki Tsujii
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Electric power system monitoring apparatus and electric power syste...
Patent number
11,035,892
Issue date
Jun 15, 2021
Hitachi, Ltd.
Masatoshi Kumagai
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Power system stabilization system and method
Patent number
10,860,000
Issue date
Dec 8, 2020
Hitachi, Ltd.
Shota Omi
G05 - CONTROLLING REGULATING
Information
Patent Grant
Voltage/reactive power operation assisting device and assisting met...
Patent number
10,581,245
Issue date
Mar 3, 2020
Hitachi, Ltd.
Eisuke Kuroda
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Power system stabilization system
Patent number
10,389,127
Issue date
Aug 20, 2019
Hitachi, Ltd.
Masatoshi Kumagai
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Power system control instruction device and method for controlling...
Patent number
10,361,560
Issue date
Jul 23, 2019
Hitachi, Ltd.
Shota Omi
G05 - CONTROLLING REGULATING
Information
Patent Grant
Power system control system and distributed controller used in same
Patent number
9,780,563
Issue date
Oct 3, 2017
Hitachi, Ltd.
Masatoshi Kumagai
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Patents Applications
last 30 patents
Information
Patent Application
ADJUSTMENT POWER PROCUREMENT DEVICE AND ADJUSTMENT POWER PROCURING...
Publication number
20220263312
Publication date
Aug 18, 2022
Hitachi, Ltd
Yuki TSUJII
G05 - CONTROLLING REGULATING
Information
Patent Application
LOAD FREQUENCY CONTROL DEVICE AND LOAD FREQUENCY CONTROL METHOD
Publication number
20220123739
Publication date
Apr 21, 2022
Hitachi, Ltd
Yuki TSUJII
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
VOLTAGE/REACTIVE POWER OPERATION ASSISTING DEVICE AND ASSISTING MET...
Publication number
20190280481
Publication date
Sep 12, 2019
Hitachi, Ltd
Eisuke KURODA
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Electric Power System Monitoring Apparatus and Electric Power Syste...
Publication number
20180313876
Publication date
Nov 1, 2018
Hitachi, Ltd
Masatoshi KUMAGAI
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Power System Stabilization System and Method
Publication number
20180120818
Publication date
May 3, 2018
Hitachi, Ltd
Shota OMI
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
POWER SYSTEM STABILIZATION SYSTEM
Publication number
20180054058
Publication date
Feb 22, 2018
Masatoshi KUMAGAI
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Power System Control Instruction Device
Publication number
20170141572
Publication date
May 18, 2017
Hitachi, Ltd
Shota OMI
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Power System State Estimation Device and Power System State Estimat...
Publication number
20160238669
Publication date
Aug 18, 2016
Hitachi, Ltd
Masatoshi KUMAGAI
G01 - MEASURING TESTING
Information
Patent Application
Power System Control System and Distributed Controller Used in Same
Publication number
20160013648
Publication date
Jan 14, 2016
Masatoshi KUMAGAI
G01 - MEASURING TESTING