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Tsunekazu SAITO
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Musashino-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Key exchange system and key exchange method
Patent number
11,424,913
Issue date
Aug 23, 2022
Nippon Telegraph and Telephone Corporation
Hiroki Watanabe
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Quantum-proof multiparty key exchange system, quantum-proof multipa...
Patent number
11,316,676
Issue date
Apr 26, 2022
Nippon Telegraph and Telephone Corporation
Koha Kinjo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Key device, key cloud system, decryption method, and program
Patent number
10,686,604
Issue date
Jun 16, 2020
Nippon Telegraph and Telephone Corporation
Tsunekazu Saito
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Key exchange method, key exchange system, key device, terminal devi...
Patent number
10,419,213
Issue date
Sep 17, 2019
Nippon Telegraph and Telephone Corporation
Akira Nagai
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Patents Applications
last 30 patents
Information
Patent Application
COMMUNICATION SYSTEM, COMMUNICATION APPARATUS, METHOD, AND PROGRAM
Publication number
20250016140
Publication date
Jan 9, 2025
Nippon Telegraph and Telephone Corporation
Sakae CHIKARA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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, TERMINAL DEVICE, KEY EXCHANGE METHOD, PROGRAM,...
Publication number
20200322141
Publication date
Oct 8, 2020
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Koha KINJO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
KEY EXCHANGE SYSTEM AND KEY EXCHANGE METHOD
Publication number
20200127818
Publication date
Apr 23, 2020
Hiroki Watanabe
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
KEY EXCHANGE METHOD, KEY EXCHANGE SYSTEM, KEY DEVICE, TERMINAL DEVI...
Publication number
20170373841
Publication date
Dec 28, 2017
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Akira NAGAI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
KEY DEVICE, KEY CLOUD SYSTEM, DECRYPTION METHOD, AND PROGRAM
Publication number
20160254914
Publication date
Sep 1, 2016
Nippon Telegraph and Telephone Corporation
Tsunekazu SAITO
H04 - ELECTRIC COMMUNICATION TECHNIQUE