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Patents Grants
last 30 patents
Information
Patent Grant
Transmission apparatus and transmission method
Patent number
12,119,867
Issue date
Oct 15, 2024
Nippon Telegraph and Telephone Corporation
Kei Kitamura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Failure transfer apparatus, failure transfer system, and failure tr...
Patent number
12,101,246
Issue date
Sep 24, 2024
Nippon Telegraph and Telephone Corporation
Kengo Shintaku
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
Transmission apparatus and transmission method
Patent number
11,984,925
Issue date
May 14, 2024
Nippon Telegraph and Telephone Corporation
Kei Kitamura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method, device and program for estimating optical communication status
Patent number
11,923,897
Issue date
Mar 5, 2024
Nippon Telegraph and Telephone Corporation
Takayuki Nakachi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Information processing system, information processing method and pr...
Patent number
11,917,019
Issue date
Feb 27, 2024
Nippon Telegraph and Telephone Corporation
Takuya Ohara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Transmitting apparatus, receiving apparatus, and transmission system
Patent number
11,581,988
Issue date
Feb 14, 2023
Nippon Telegraph and Telephone Corporation
Takafumi Tanaka
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
Information
Patent Grant
Optical amplification system and optical amplification method
Patent number
11,108,208
Issue date
Aug 31, 2021
Nippon Telegraph and Telephone Corporation
Takuya Oda
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Transmission quality estimation system, transmission quality estima...
Patent number
10,686,520
Issue date
Jun 16, 2020
Nippon Telegraph and Telephone Corporation
Takuya Oda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Transmission quality estimation system, transmission quality estima...
Patent number
10,637,568
Issue date
Apr 28, 2020
Nippon Telegraph and Telephone Corporation
Takuya Oda
G02 - OPTICS
Information
Patent Grant
Communication system and fault detection method
Patent number
10,615,868
Issue date
Apr 7, 2020
Nippon Telegraph and Telephone Corporation
Takuya Oda
G02 - OPTICS
Information
Patent Grant
Highly reliable path accommodation design apparatus and method
Patent number
10,587,472
Issue date
Mar 10, 2020
Nippon Telegraph and Telephone Corporation
Akihiro Kadohata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication system and connector
Patent number
10,527,781
Issue date
Jan 7, 2020
Nippon Telegraph and Telephone Corporation
Takuya Oda
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Communication system and fault location specifying method
Patent number
10,511,381
Issue date
Dec 17, 2019
Nippon Telegraph and Telephone Corporation
Takuya Oda
G02 - OPTICS
Information
Patent Grant
Television stand and electronic apparatus
Patent number
10,306,177
Issue date
May 28, 2019
Toshiba Visual Solutions Corporation
Takafumi Tanaka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Highly reliable path accommodation design apparatus and method
Patent number
9,794,123
Issue date
Oct 17, 2017
Nippon Telegraph and Telephone Corporation
Akihiro Kadohata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Transmission system and transmission method
Patent number
9,336,080
Issue date
May 10, 2016
Nippon Telegraph and Telephone Corporation
Akira Hirano
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Wavelength path reallocation method and upper layer path reallocati...
Patent number
9,178,645
Issue date
Nov 3, 2015
Nippon Telegraph and Telephone Corporation
Akihiro Kadohata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Frequency assignment method and apparatus
Patent number
9,154,257
Issue date
Oct 6, 2015
Nippon Telegraph and Telephone Corporation
Akira Hirano
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Bandwidth variable communication method, bandwidth variable communi...
Patent number
8,964,581
Issue date
Feb 24, 2015
Nippon Telegraph and Telephone Corporation
Hidehiko Takara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
COMMUNICATION PATH FINDING DEVICE, COMMUNICATION PATH FINDING METHO...
Publication number
20250016089
Publication date
Jan 9, 2025
Nippon Telegraph and Telephone Corporation
Takafumi TANAKA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION SYSTEM, COMMUNICATION METHOD AND PROGRAM
Publication number
20240413903
Publication date
Dec 12, 2024
Takafumi TANAKA
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
CONNECTION NODE APPARATUS, OPTICAL TRANSMISSION SYSTEM, AND CONNECT...
Publication number
20240196118
Publication date
Jun 13, 2024
Nippon Telegraph and Telephone Corporation
Kei KITAMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING METHOD AND PR...
Publication number
20240155035
Publication date
May 9, 2024
Nippon Telegraph and Telephone Corporation
Takuya OHARA
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
TRANSMISSION APPARATUS AND TRANSMISSION METHOD
Publication number
20240056179
Publication date
Feb 15, 2024
Nippon Telegraph and Telephone Corporation
Kei KITAMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING METHOD AND PR...
Publication number
20240028552
Publication date
Jan 25, 2024
Nippon Telegraph and Telephone Corporation
Takuya OHARA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
INFORMATION PROCESSING SYSTEM, DELAY CONTROL DEVICE, INFORMATION PR...
Publication number
20240031045
Publication date
Jan 25, 2024
Nippon Telegraph and Telephone Corporation
Takuya OHARA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL PATH DESIGN APPARATUS, OPTICAL PATH DESIGN METHOD AND PROGRAM
Publication number
20230412299
Publication date
Dec 21, 2023
Nippon Telegraph and Telephone Corporation
Takafumi Tanaka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING METHOD AND PR...
Publication number
20230403220
Publication date
Dec 14, 2023
Nippon Telegraph and Telephone Corporation
Takuya ODA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION SYSTEM, DISTRIBUTION DEVICE, DATA DISTRIBUTION METHOD...
Publication number
20230344753
Publication date
Oct 26, 2023
Nippon Telegraph and Telephone Corporation
Takuya ODA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING METHOD AND PR...
Publication number
20230336629
Publication date
Oct 19, 2023
Nippon Telegraph and Telephone Corporation
Takuya OHARA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL PATH DESIGN APPARATUS, OPTICAL PATH DESIGN METHOD AND PROGRAM
Publication number
20230232307
Publication date
Jul 20, 2023
Nippon Telegraph and Telephone Corporation
Takafumi Tanaka
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
METHOD, DEVICE AND PROGRAM FOR ESTIMATING OPTICAL COMMUNICATION STATUS
Publication number
20230018846
Publication date
Jan 19, 2023
Nippon Telegraph and Telephone Corporation
Takayuki NAKACHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
TRANSFER APPARATUS, TRANSFER SYSTEM, AND TRANSFER METHOD.
Publication number
20220345398
Publication date
Oct 27, 2022
Nippon Telegraph and Telephone Corporation
Kengo SHINTAKU
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
TRANSMISSION APPARATUS AND TRANSMISSION METHOD
Publication number
20220321210
Publication date
Oct 6, 2022
Nippon Telegraph and Telephone Corporation
Kei KITAMURA
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
TRANSMITTING APPARATUS, RECEIVING APPARATUS, AND TRANSMISSION SYSTEM
Publication number
20210160017
Publication date
May 27, 2021
Nippon Telegraph and Telephone Corporation
Takafumi TANAKA
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
Information
Patent Application
COMMUNICATION SYSTEM AND CONNECTOR
Publication number
20180375579
Publication date
Dec 27, 2018
Nippon Telegraph and Telephone Corporation
Takuya ODA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL AMPLIFICATION SYSTEM AND OPTICAL AMPLIFICATION METHOD
Publication number
20180358773
Publication date
Dec 13, 2018
Nippon Telegraph and Telephone Corporation
Takuya ODA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION SYSTEM AND FAULT DETECTION METHOD
Publication number
20180359024
Publication date
Dec 13, 2018
Nippon Telegraph and Telephone Corporation
Takuya ODA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION SYSTEM AND FAULT LOCATION SPECIFYING METHOD
Publication number
20180351639
Publication date
Dec 6, 2018
Nippon Telegraph and Telephone Corporation
Takuya ODA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
NODE AND OPTICAL POWER SUPPLY SYSTEM
Publication number
20180343067
Publication date
Nov 29, 2018
Nippon Telegraph and Telephone Corporation
Takuya ODA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION SYSTEM AND CONNECTOR
Publication number
20180341060
Publication date
Nov 29, 2018
Nippon Telegraph and Telephone Corporation
Takuya ODA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
TRANSMISSION QUALITY ESTIMATION SYSTEM, TRANSMISSION QUALITY ESTIMA...
Publication number
20180337726
Publication date
Nov 22, 2018
Nippon Telegraph and Telephone Corporation
Takuya ODA
H04 - ELECTRIC COMMUNICATION TECHNIQUE