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Yuji Akiyama
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Tokyo, JP
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Patents Grants
last 30 patents
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Patent Grant
Optical network system and WDM apparatus
Patent number
8,731,398
Issue date
May 20, 2014
Mitsubishi Electric Corporation
Yuji Akiyama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical network system, optical redundant switching apparatus, and...
Patent number
8,693,864
Issue date
Apr 8, 2014
Mitsubishi Electric Corporation
Kazuo Kubo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical switch and optical-switch control method
Patent number
8,478,089
Issue date
Jul 2, 2013
Mitsubishi Electric Corporation
Yuji Akiyama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
DATA COMPRESSION APPARATUS, DATA DECOMPRESSION APPARATUS, DATA COMP...
Publication number
20230062385
Publication date
Mar 2, 2023
Mitsubishi Electric Corporation
Yuji AKIYAMA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL ANALYSIS DEVICE, CONTROL CIRCUIT, AND STORAGE MEDIUM
Publication number
20220224365
Publication date
Jul 14, 2022
Mitsubishi Electric Corporation
Yuji AKIYAMA
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
OPTICAL NETWORK SYSTEM AND WDM APPARATUS
Publication number
20120237199
Publication date
Sep 20, 2012
MITSUBISHI ELECTRIC CORPORATION
Yuji AKIYAMA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL SWITCH AND OPTICAL-SWITCH CONTROL METHOD
Publication number
20110217000
Publication date
Sep 8, 2011
MITSUBISHI ELECTRIC CORPORATION
Yuji AKIYAMA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL NETWORK SYSTEM, OPTICAL REDUNDANT SWITCHING APPARATUS, AND...
Publication number
20110158648
Publication date
Jun 30, 2011
Mitsubishi Electric Corporation
Kazuo Kubo
H04 - ELECTRIC COMMUNICATION TECHNIQUE