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Narihiro Arai
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Undersea device, energization method, and recording medium
Patent number
12,136,813
Issue date
Nov 5, 2024
NEC Corporation
Narihiro Arai
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Constant current supply device, constant current supply system, and...
Patent number
10,680,436
Issue date
Jun 9, 2020
NEC Corporation
Narihiro Arai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Elastic store circuit
Patent number
7,158,599
Issue date
Jan 2, 2007
NEC Corporation
Narihiro Arai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
POWER SOURCE CIRCUIT AND OCEAN-FLOOR OPTICAL CABLE
Publication number
20240072909
Publication date
Feb 29, 2024
NEC Corporation
Narihiro ARAI
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
UNDERSEA DEVICE, ENERGIZATION METHOD, AND RECORDING MEDIUM
Publication number
20220416538
Publication date
Dec 29, 2022
NEC Corporation
Narihiro ARAI
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
POWER SUPPLY CIRCUIT AND METHOD FOR CONTROLLING POWER SUPPLY CIRCUIT
Publication number
20220131460
Publication date
Apr 28, 2022
NEC Corporation
Narihiro ARAI
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
SUBMARINE OPTICAL COMMUNICATION APPARATUS AND SUBMARINE OPTICAL COM...
Publication number
20200313762
Publication date
Oct 1, 2020
NEC Corporation
Kazusa UGAJIN
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SUBMARINE DEVICE, SUBMARINE CABLE SYSTEM, METHOD FOR CONTROLLING SU...
Publication number
20190074690
Publication date
Mar 7, 2019
NEC Corporation
Narihiro ARAI
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
CONSTANT CURRENT SUPPLY DEVICE, CONSTANT CURRENT SUPPLY SYSTEM, AND...
Publication number
20180212425
Publication date
Jul 26, 2018
NEC Corporation
Narihiro ARAI
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Elastic store circuit
Publication number
20020097754
Publication date
Jul 25, 2002
Narihiro Arai
H04 - ELECTRIC COMMUNICATION TECHNIQUE