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Shigemasa Kumagawa
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Musashino-shi, Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Communication device, multicast transfer system, and multicast tran...
Patent number
11,985,059
Issue date
May 14, 2024
Nippon Telegraph and Telephone Corporation
Ryuma Senoo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Transfer device and transfer method
Patent number
11,343,179
Issue date
May 24, 2022
Nippon Telegraph and Telephone Corporation
Kazuto Toyozumi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multicast transfer system and multicast transfer method
Patent number
11,343,112
Issue date
May 24, 2022
Nippon Telegraph and Telephone Corporation
Ryuma Senoo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Path information transmission device, path information transmission...
Patent number
11,296,973
Issue date
Apr 5, 2022
Nippon Telegraph and Telephone Corporation
Kazuto Toyozumi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
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Patent Application
COMMUNICATION DEVICE, MULTICAST TRANSFER SYSTEM, AND MULTICAST TRAN...
Publication number
20220045938
Publication date
Feb 10, 2022
Nippon Telegraph and Telephone Corporation
Ryuma Senoo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
TRANSFER DEVICE AND TRANSFER METHOD
Publication number
20210344592
Publication date
Nov 4, 2021
Nippon Telegraph and Telephone Corporation
Kazuto Toyozumi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
MULTICAST TRANSFER SYSTEM AND MULTICAST TRANSFER METHOD
Publication number
20210111913
Publication date
Apr 15, 2021
Nippon Telegraph and Telephone Corporation
Ryuma Senoo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
PATH INFORMATION TRANSMISSION DEVICE, PATH INFORMATION TRANSMISSIO...
Publication number
20210006485
Publication date
Jan 7, 2021
Kazuto Toyozumi
H04 - ELECTRIC COMMUNICATION TECHNIQUE