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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical transmission device, optical communication system, and opti...
Patent number
12,155,417
Issue date
Nov 26, 2024
Nippon Telegraph and Telephone Corporation
Naotaka Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multiplex transmission system and connection method between ports f...
Patent number
12,149,338
Issue date
Nov 19, 2024
Nippon Telegraph and Telephone Corporation
Naotaka Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal transfer device, signal transfer method, signal transfer con...
Patent number
12,114,201
Issue date
Oct 8, 2024
Nippon Telegraph and Telephone Corporation
Naotaka Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multiplex transmission system and connection method between ports f...
Patent number
12,095,548
Issue date
Sep 17, 2024
Nippon Telegraph and Telephone Corporation
Keita Takahashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication system and ONU system
Patent number
12,088,978
Issue date
Sep 10, 2024
Nippon Telegraph and Telephone Corporation
Tomoya Hatano
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication system and OLT system
Patent number
12,063,072
Issue date
Aug 13, 2024
Nippon Telegraph and Telephone Corporation
Tomoya Hatano
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication system, communication device, and terminal device
Patent number
12,058,557
Issue date
Aug 6, 2024
Nippon Telegraph and Telephone Corporation
Tatsuya Fukui
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Relay device, relay method, and relay program
Patent number
12,047,848
Issue date
Jul 23, 2024
Nippon Telegraph and Telephone Corporation
Naotaka Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal transfer system, signal transfer method, and path control de...
Patent number
12,010,521
Issue date
Jun 11, 2024
Nippon Telegraph and Telephone Corporation
Naotaka Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication system and OLT system
Patent number
11,936,432
Issue date
Mar 19, 2024
Nippon Telegraph and Telephone Corporation
Tomoya Hatano
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal transfer device and signal transfer method
Patent number
11,924,111
Issue date
Mar 5, 2024
Nippon Telegraph and Telephone Corporation
Naotaka Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal transfer system, signal transfer device, route control devic...
Patent number
11,924,740
Issue date
Mar 5, 2024
Nippon Telegraph and Telephone Corporation
Naotaka Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Relay device, relay method, and relay program
Patent number
11,923,950
Issue date
Mar 5, 2024
Nippon Telegraph and Telephone Corporation
Naotaka Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal transfer system, path control device, and signal transfer me...
Patent number
11,909,658
Issue date
Feb 20, 2024
Nippon Telegraph and Telephone Corporation
Naotaka Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Route control method and route control device
Patent number
11,825,395
Issue date
Nov 21, 2023
Nippon Telegraph and Telephone Corporation
Naotaka Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal transfer management device, signal transfer management metho...
Patent number
11,804,920
Issue date
Oct 31, 2023
Nippon Telegraph and Telephone Corporation
Keita Takahashi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Multiplex transmission system and multiplex transmission method
Patent number
11,804,897
Issue date
Oct 31, 2023
Nippon Telegraph and Telephone Corporation
Naotaka Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal transfer system, signal transfer device, signal transfer met...
Patent number
11,757,788
Issue date
Sep 12, 2023
Nippon Telegraph and Telephone Corporation
Hiroko Nomura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication control system, communication control method, communi...
Patent number
11,711,303
Issue date
Jul 25, 2023
Nippon Telegraph and Telephone Corporation
Hiroyuki Uzawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Route control method and route control device
Patent number
11,706,664
Issue date
Jul 18, 2023
Nippon Telegraph and Telephone Corporation
Naotaka Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Wireless communication system, relay device, and receiving device
Patent number
11,695,455
Issue date
Jul 4, 2023
Nippon Telegraph and Telephone Corporation
Naotaka Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical communication system and optical communication method
Patent number
10,469,167
Issue date
Nov 5, 2019
Nippon Telegraph and Telephone Corporation
Naotaka Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical communication system and optical communication method
Patent number
10,211,921
Issue date
Feb 19, 2019
Nippon Telegraph and Telephone Corporation
Naotaka Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Transmission system and transmission method
Patent number
10,110,310
Issue date
Oct 23, 2018
Nippon Telegraph and Telephone Corporation
Daisuke Hisano
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Distributed radio communication base station system, base band unit...
Patent number
9,866,327
Issue date
Jan 9, 2018
Nippon Telegraph and Telephone Corporation
Naotaka Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical-wireless access system
Patent number
9,788,270
Issue date
Oct 10, 2017
Nippon Telegraph and Telephone Corporation
Noriko Ilyama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical wireless access system
Patent number
9,693,302
Issue date
Jun 27, 2017
Nippon Telegraph and Telephone Corporation
Noriko Iiyama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical wireless access system
Patent number
9,655,042
Issue date
May 16, 2017
Nippon Telegraph and Telephone Corporation
Noriko Iiyama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
OPTICAL NODE APPARATUS, OPTICAL COMMUNICATION SYSTEM AND TRANSMISSI...
Publication number
20250016479
Publication date
Jan 9, 2025
Nippon Telegraph and Telephone Corporation
Takuya KANAI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL COMMUNICATION APPARATUS, OPTICAL COMMUNICATION SYSTEM AND O...
Publication number
20250016481
Publication date
Jan 9, 2025
Nippon Telegraph and Telephone Corporation
Naotaka SHIBATA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION DEVICE
Publication number
20250016480
Publication date
Jan 9, 2025
Nippon Telegraph and Telephone Corporation
Naotaka SHIBATA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL COMMUNICATION SYSTEM AND OPTICAL COMMUNICATION METHOD
Publication number
20250007610
Publication date
Jan 2, 2025
Nippon Telegraph and Telephone Corporation
Shin KANEKO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
MOBILES, COMMUNICATION SYSTEMS, AND CONTROL METHODS
Publication number
20240421904
Publication date
Dec 19, 2024
Nippon Telegraph and Telephone Corporation
Takeshi IMAI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL COMMUNICATION APPARATUS, OPTICAL COMMUNICATION SYSTEM AND T...
Publication number
20240422457
Publication date
Dec 19, 2024
Nippon Telegraph and Telephone Corporation
Naotaka SHIBATA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL COMMUNICATION APPARATUS, OPTICAL COMMUNICATION SYSTEM AND T...
Publication number
20240413907
Publication date
Dec 12, 2024
Nippon Telegraph and Telephone Corporation
Naotaka SHIBATA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL SPACE COMMUNICATION DEVICE AND OPTICAL SPACE COMMUNICATION...
Publication number
20240372614
Publication date
Nov 7, 2024
Nippon Telegraph and Telephone Corporation
Takeshi IMAI
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
SWITCH, NETWORK CONTROLLER, COMMUNICATION CONTROL METHOD, AND COMMU...
Publication number
20240283817
Publication date
Aug 22, 2024
Nippon Telegraph and Telephone Corporation
Rintaro HARADA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DECISION DEVICE, DECISION METHOD, MOBILE TERMINAL, CONTROL METHOD,...
Publication number
20240230832
Publication date
Jul 11, 2024
Nippon Telegraph and Telephone Corporation
Naotaka SHIBATA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
LOCATION NOTIFICATION SYSTEM, MOBILE, AND LOCATION NOTIFICATION METHOD
Publication number
20240200950
Publication date
Jun 20, 2024
Nippon Telegraph and Telephone Corporation
Kazutaka HARA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
MOBILE TERMINAL AND CONTROL METHOD
Publication number
20240201316
Publication date
Jun 20, 2024
Nippon Telegraph and Telephone Corporation
Takeshi IMAI
G01 - MEASURING TESTING
Information
Patent Application
BEAM TRANSMISSION DEVICE AND BEAM TRANSMISSION METHOD
Publication number
20240187094
Publication date
Jun 6, 2024
Nippon Telegraph and Telephone Corporation
Naotaka SHIBATA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL SPACE COMMUNICATION DEVICE AND OPTICAL SPACE COMMUNICATION...
Publication number
20240162982
Publication date
May 16, 2024
Nippon Telegraph and Telephone Corporation
Takeshi IMAI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL COMMUNICATION DEVICE AND OPTICAL COMMUNICATION METHOD
Publication number
20230421257
Publication date
Dec 28, 2023
Nippon Telegraph and Telephone Corporation
Takeshi IMAI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SPATIAL OPTICAL COMMUNICATION SYSTEM
Publication number
20230308179
Publication date
Sep 28, 2023
Nippon Telegraph and Telephone Corporation
Naotaka SHIBATA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
MULTIPLEX TRANSMISSION SYSTEM AND CONNECTION METHOD BETWEEN PORTS F...
Publication number
20230291492
Publication date
Sep 14, 2023
Nippon Telegraph and Telephone Corporation
Naotaka SHIBATA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
MULTIPLEX TRANSMISSION SYSTEM AND CONNECTION METHOD BETWEEN PORTS F...
Publication number
20230261779
Publication date
Aug 17, 2023
Nippon Telegraph and Telephone Corporation
Keita TAKAHASHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL TRANSFER CONTROL DEVICE AND SIGNAL TRANSFER CONTROL METHOD
Publication number
20230247517
Publication date
Aug 3, 2023
Nippon Telegraph and Telephone Corporation
Naotaka SHIBATA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
MONITORING DEVICE, COMMUNICATION SYSTEM, COMMUNICATION CONTROL METH...
Publication number
20230145000
Publication date
May 11, 2023
Nippon Telegraph and Telephone Corporation
Naotaka SHIBATA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION SYSTEM AND OLT SYSTEM
Publication number
20230146851
Publication date
May 11, 2023
Nippon Telegraph and Telephone Corporation
Tomoya HATANO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
BASE STATION, WIRELESS COMMUNICATION SYSTEM, AND WIRELESS COMMUNICA...
Publication number
20230137775
Publication date
May 4, 2023
Nippon Telegraph and Telephone Corporation
Naotaka SHIBATA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION DEVICE, OPTICAL COMMUNICATION SYSTEM, AND OPTI...
Publication number
20230140715
Publication date
May 4, 2023
Nippon Telegraph and Telephone Corporation
Naotaka SHIBATA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL TRANSFER SYSTEM, SIGNAL TRANSFER DEVICE, SIGNAL TRANSFER MET...
Publication number
20230135477
Publication date
May 4, 2023
Nippon Telegraph and Telephone Corporation
Naotaka SHIBATA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION SYSTEM AND ONU SYSTEM
Publication number
20230133100
Publication date
May 4, 2023
Nippon Telegraph and Telephone Corporation
Tomoya HATANO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
MONITORING DEVICE, COMMUNICATION SYSTEM, COMMUNICATION CONTROL METH...
Publication number
20230120832
Publication date
Apr 20, 2023
Nippon Telegraph and Telephone Corporation
Naotaka SHIBATA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL TRANSFER SYSTEM, SIGNAL TRANSFER DEVICE, SIGNAL TRANSFER MET...
Publication number
20230120429
Publication date
Apr 20, 2023
Nippon Telegraph and Telephone Corporation
Hiroko NOMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL TRANSFER SYSTEM, SIGNAL TRANSFER DEVICE, SIGNAL TRANSFER MET...
Publication number
20230113911
Publication date
Apr 13, 2023
Nippon Telegraph and Telephone Corporation
Hiroko NOMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL TRANSFER SYSTEM, SIGNAL TRANSFER DEVICE, SIGNAL TRANSFER MAN...
Publication number
20230104386
Publication date
Apr 6, 2023
Nippon Telegraph and Telephone Corporation
Hiroko NOMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION SYSTEM AND OLT SYSTEM
Publication number
20230084976
Publication date
Mar 16, 2023
Nippon Telegraph and Telephone Corporation
Tomoya HATANO
H04 - ELECTRIC COMMUNICATION TECHNIQUE