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Fumitaka Hoshino
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Anonymous signature system, signature generation apparatus, anonymo...
Patent number
11,973,884
Issue date
Apr 30, 2024
Nippon Telegraph and Telephone Corporation
Fumitaka Hoshino
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Key exchange system, method and program for generating a shared key...
Patent number
11,909,867
Issue date
Feb 20, 2024
Nippon Telegraph and Telephone Corporation
Junichi Tomida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Key exchange system, communication apparatus, key exchange method a...
Patent number
11,902,428
Issue date
Feb 13, 2024
Nippon Telegraph and Telephone Corporation
Junichi Tomida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Email system restoring recipient identifier based on identifier-for...
Patent number
7,580,980
Issue date
Aug 25, 2009
Nippon Telegraph and Telephone Corporation
Masahisa Kawashima
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Verifiable anonymous channel
Patent number
6,937,728
Issue date
Aug 30, 2005
Nippon Telegraph and Telephone Corporation
Masayuki Abe
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Apparatus and method for elliptic-curve multiplication and recordin...
Patent number
6,430,588
Issue date
Aug 6, 2002
Nippon Telegraph and Telephone Corporation
Tetsutaro Kobayashi
G06 - COMPUTING CALCULATING COUNTING
Patents Applications
last 30 patents
Information
Patent Application
ELECTRONIC CURRENCY SYSTEM, INFORMATION PROCESSING APPARATUS, ELECT...
Publication number
20240211900
Publication date
Jun 27, 2024
Nippon Telegraph and Telephone Corporation
Tsunekazu SAITO
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
KEY EXCHANGE SYSTEM, COMMUNICATION APPARATUS, KEY EXCHANGE METHOD A...
Publication number
20220303124
Publication date
Sep 22, 2022
Nippon Telegraph and Telephone Corporation
Junichi TOMIDA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
ANONYMOUS SIGNATURE SYSTEM, SIGNATURE GENERATION APPARATUS, ANONYMO...
Publication number
20220247574
Publication date
Aug 4, 2022
Nippon Telegraph and Telephone Corporation
Fumitaka HOSHINO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
KEY EXCHANGE SYSTEM, COMMUNICATION APPARATUS, KEY EXCHANGE METHOD A...
Publication number
20220224520
Publication date
Jul 14, 2022
Nippon Telegraph and Telephone Corporation
Junichi TOMIDA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Communication method, communication system, relay system, communica...
Publication number
20060129629
Publication date
Jun 15, 2006
Nippon Telegraph and Telephone Corporation
Masahisa Kawashima
G06 - COMPUTING CALCULATING COUNTING