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Seiki KUWABARA
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical and electronic integrated switch
Patent number
12,107,762
Issue date
Oct 1, 2024
Nippon Telegraph and Telephone Corporation
Osamu Moriwaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical communication network management apparatus
Patent number
12,034,484
Issue date
Jul 9, 2024
Nippon Telegraph and Telephone Corporation
Takafumi Tanaka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical and electronic integrated switch
Patent number
11,979,694
Issue date
May 7, 2024
Nippon Telegraph and Telephone Corporation
Osamu Moriwaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical and electronic integrated switch
Patent number
11,930,309
Issue date
Mar 12, 2024
Nippon Telegraph and Telephone Corporation
Keita Yamaguchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical and electronic integrated switch and optical network system
Patent number
11,881,897
Issue date
Jan 23, 2024
Nippon Telegraph and Telephone Corporation
Hideki Nishizawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission system and transmission mode selecting method
Patent number
11,546,064
Issue date
Jan 3, 2023
Nippon Telegraph and Telephone Corporation
Tetsuro Inui
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal quality information notification method and relay communicat...
Patent number
11,509,392
Issue date
Nov 22, 2022
Nippon Telegraph and Telephone Corporation
Takafumi Tanaka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
State estimating device and communication system
Patent number
11,342,990
Issue date
May 24, 2022
Nippon Telegraph and Telephone Corporation
Seiki Kuwabara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission system and communication condition selection m...
Patent number
11,165,497
Issue date
Nov 2, 2021
Nippon Telegraph and Telephone Corporation
Fumikazu Inuzuka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
OPTICAL AND ELECTRONIC INTEGRATED SWITCH
Publication number
20240422097
Publication date
Dec 19, 2024
Nippon Telegraph and Telephone Corporation
Osamu Moriwaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM AND TRANSMISSION MODE SELECTING METHOD
Publication number
20240235690
Publication date
Jul 11, 2024
Nippon Telegraph and Telephone Corporation
Tetsuro Inui
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM AND TRANSMISSION MODE SELECTING METHOD
Publication number
20240137128
Publication date
Apr 25, 2024
Nippon Telegraph and Telephone Corporation
Tetsuro Inui
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical and Electronic Integrated Switch
Publication number
20230136142
Publication date
May 4, 2023
Nippon Telegraph and Telephone Corporation
Osamu Moriwaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical and Electronic Integrated Switch and Optical Network System
Publication number
20230082854
Publication date
Mar 16, 2023
Nippon Telegraph and Telephone Corporation
Hideki Nishizawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL COMMUNICATION NETWORK MANAGEMENT APPARATUS
Publication number
20230076671
Publication date
Mar 9, 2023
Nippon Telegraph and Telephone Corporation
Takafumi TANAKA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical and Electronic Integrated Switch
Publication number
20230073384
Publication date
Mar 9, 2023
Nippon Telegraph and Telephone Corporation
Osamu Moriwaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical and Electronic Integrated Switch
Publication number
20230060777
Publication date
Mar 2, 2023
Nippon Telegraph and Telephone Corporation
Keita Yamaguchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM AND TRANSMISSION MODE SELECTING METHOD
Publication number
20210314067
Publication date
Oct 7, 2021
Nippon Telegraph and Telephone Corporation
Tetsuro Inui
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL QUALITY INFORMATION NOTIFICATION METHOD AND RELAY COMMUNICAT...
Publication number
20210126707
Publication date
Apr 29, 2021
Nippon Telegraph and Telephone Corporation
Takafumi TANAKA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM AND COMMUNICATION CONDITION SELECTION M...
Publication number
20210028857
Publication date
Jan 28, 2021
Nippon Telegraph and Telephone Corporation
Fumikazu INUZUKA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
STATE ESTIMATING DEVICE AND COMMUNICATION SYSTEM
Publication number
20210013963
Publication date
Jan 14, 2021
Nippon Telegraph and Telephone Corporation
Seiki KUWABARA
H04 - ELECTRIC COMMUNICATION TECHNIQUE