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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical transmission system and optical transmission method
Patent number
12,199,671
Issue date
Jan 14, 2025
Nippon Telegraph and Telephone Corporation
Kyo Minoguchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical communication system, optical line termination apparatus an...
Patent number
11,949,460
Issue date
Apr 2, 2024
Nippon Telegraph and Telephone Corporation
Kyo Minoguchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Wavelength dispersion compensation apparatus, wavelength dispersion...
Patent number
11,316,588
Issue date
Apr 26, 2022
Nippon Telegraph and Telephone Corporation
Kyo Minoguchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission control method and optical transmission system
Patent number
11,245,487
Issue date
Feb 8, 2022
Nippon Telegraph and Telephone Corporation
Fukutaro Hamaoka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
OPTICAL POWER RECEPTION APPARATUS, COMMUNICATION APPARATUS AND OPTI...
Publication number
20230344525
Publication date
Oct 26, 2023
Nippon Telegraph and Telephone Corporation
Kyo MINOGUCHI
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM AND OPTICAL TRANSMISSION METHOD
Publication number
20230246712
Publication date
Aug 3, 2023
Nippon Telegraph and Telephone Corporation
Kyo MINOGUCHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL COMMUNICATION SYSTEM
Publication number
20230216586
Publication date
Jul 6, 2023
Nippon Telegraph and Telephone Corporation
Kyo MINOGUCHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL COMMUNICATION SYSTEM, OPTICAL LINE TERMINATION APPARATUS AN...
Publication number
20220399942
Publication date
Dec 15, 2022
Nippon Telegraph and Telephone Corporation
Kyo MINOGUCHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WAVELENGTH DISPERSION COMPENSATION APPARATUS, WAVELENGTH DISPERSION...
Publication number
20220038180
Publication date
Feb 3, 2022
Nippon Telegraph and Telephone Corporation
Kyo MINOGUCHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION CONTROL METHOD AND OPTICAL TRANSMISSION SYSTEM
Publication number
20210211218
Publication date
Jul 8, 2021
Nippon Telegraph and Telephone Corporation
Fukutaro HAMAOKA
H04 - ELECTRIC COMMUNICATION TECHNIQUE