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Takeo SASAI
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Musashino-shi, Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Adaptive equalization filter and method for updating filter coeffic...
Patent number
12,224,889
Issue date
Feb 11, 2025
Nippon Telegraph and Telephone Corporation
Etsushi Yamazaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission system and characteristic estimation method
Patent number
11,901,953
Issue date
Feb 13, 2024
Nippon Telegraph and Telephone Corporation
Takeo Sasai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication apparatus, and optical transmission system
Patent number
11,799,557
Issue date
Oct 24, 2023
Nippon Telegraph and Telephone Corporation
Takeshi Kakizaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmitting apparatus and transmission characteristics est...
Patent number
11,728,889
Issue date
Aug 15, 2023
Nippon Telegraph and Telephone Corporation
Takeo Sasai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical receiving apparatus and coefficient optimization method
Patent number
11,716,149
Issue date
Aug 1, 2023
Nippon Telegraph and Telephone Corporation
Takeo Sasai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM, NETWORK CONTROLLER, AND OPTICAL TRANSM...
Publication number
20250233664
Publication date
Jul 17, 2025
Nippon Telegraph and Telephone Corporation
Takeo SASAI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM, OPTICAL RECEIVER, OPTICAL TRANSMITTER,...
Publication number
20250226884
Publication date
Jul 10, 2025
Nippon Telegraph and Telephone Corporation
Masanori NAKAMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
NETWORK CONTROLLER, ESTIMATION METHOD AND COMPUTER PROGRAM
Publication number
20250125871
Publication date
Apr 17, 2025
Nippon Telegraph and Telephone Corporation
Takeo Sasai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION CHARACTERISTIC ESTIMATION APPARATUS, OPTICAL T...
Publication number
20250105917
Publication date
Mar 27, 2025
Nippon Telegraph and Telephone Corporation
Takeo SASAI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM, TRANSMISSION APPARATUS, RECEIVING APPA...
Publication number
20240283544
Publication date
Aug 22, 2024
Nippon Telegraph and Telephone Corporation
Masanori NAKAMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
ADAPTIVE EQUALIZATION FILTER AND METHOD FOR UPDATING FILTER COEFFIC...
Publication number
20230421420
Publication date
Dec 28, 2023
Nippon Telegraph and Telephone Corporation
Etsushi YAMAZAKI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM AND CHARACTERISTIC ESTIMATION METHOD
Publication number
20230106338
Publication date
Apr 6, 2023
Nippon Telegraph and Telephone Corporation
Takeo SASAI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL RECEIVING APPARATUS AND OPTICAL RECEIVING METHOD
Publication number
20230097741
Publication date
Mar 30, 2023
Nippon Telegraph and Telephone Corporation
Kengo HORIKOSHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMITTING APPARATUS AND TRANSMISSION CHARACTERISTICS EST...
Publication number
20220416890
Publication date
Dec 29, 2022
Nippon Telegraph and Telephone Corporation
Takeo SASAI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION APPARATUS, AND OPTICAL TRANSMISSION SYSTEM
Publication number
20220294535
Publication date
Sep 15, 2022
Nippon Telegraph and Telephone Corporation
Takeshi Kakizaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL RECEIVING APPARATUS AND COEFFICIENT OPTIMIZATION METHOD
Publication number
20220131619
Publication date
Apr 28, 2022
Nippon Telegraph and Telephone Corporation
Takeo SASAI
H04 - ELECTRIC COMMUNICATION TECHNIQUE