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Tomohide YAMAMOTO
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Terminal device, key distribution management device, server-client...
Patent number
11,516,195
Issue date
Nov 29, 2022
Nippon Telegraph and Telephone Corporation
Yuto Kawahara
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Encrypted communication device, encrypted communication system, enc...
Patent number
11,388,001
Issue date
Jul 12, 2022
Nippon Telegraph and Telephone Corporation
Reo Yoshida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Data transmission and reception method and system
Patent number
10,673,629
Issue date
Jun 2, 2020
Nippon Telegraph and Telephone Corporation
Reo Yoshida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Key exchange method, key exchange system, communication device and...
Patent number
10,630,465
Issue date
Apr 21, 2020
Nippon Telegraph and Telephone Corporation
Tetsutaro Kobayashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Key exchange method, key exchange system, key distribution device,...
Patent number
10,355,856
Issue date
Jul 16, 2019
Nippon Telegraph and Telephone Corporation
Reo Yoshida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Security system, management apparatus, permission apparatus, termin...
Patent number
10,275,960
Issue date
Apr 30, 2019
Nippon Telegraph and Telephone Corporation
Hitoshi Fuji
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Grant
Directory service device, client device, key cloud system, method t...
Patent number
10,033,711
Issue date
Jul 24, 2018
Nippon Telegraph and Telephone Corporation
Tomohide Yamamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Decryption service providing device, processing device, safety eval...
Patent number
9,735,963
Issue date
Aug 15, 2017
Nippon Telegraph and Telephone Corporation
Tetsutaro Kobayashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
ENCRYPTED COMMUNICATION DEVICE, ENCRYPTED COMMUNICATION SYSTEM, ENC...
Publication number
20210091946
Publication date
Mar 25, 2021
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Reo YOSHIDA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
TERMINAL DEVICE, KEY DISTRIBUTION MANAGEMENT DEVICE, SERVER-CLIENT...
Publication number
20190124058
Publication date
Apr 25, 2019
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Yuto KAWAHARA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
KEY EXCHANGE METHOD, KEY EXCHANGE SYSTEM, KEY DISTRIBUTION DEVICE,...
Publication number
20180183583
Publication date
Jun 28, 2018
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Reo YOSHIDA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DATA TRANSMISSION AND RECEPTION METHOD AND SYSTEM
Publication number
20180115414
Publication date
Apr 26, 2018
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Reo YOSHIDA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
KEY EXCHANGE METHOD AND KEY EXCHANGE SYSTEM
Publication number
20170302445
Publication date
Oct 19, 2017
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Tetsutaro KOBAYASHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SECURITY SYSTEM, MANAGEMENT APPARATUS, PERMISSION APPARATUS, TERMIN...
Publication number
20170186255
Publication date
Jun 29, 2017
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Hitoshi FUJI
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Application
KEY STORAGE APPARATUS, KEY STORAGE METHOD AND PROGRAM THEREFOR
Publication number
20160148002
Publication date
May 26, 2016
Nippon Telegraph and Telephone Corporation
Tetsutaro KOBAYASHI
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
DIRECTORY SERVICE DEVICE, CLIENT DEVICE, KEY CLOUD SYSTEM, METHOD T...
Publication number
20160127335
Publication date
May 5, 2016
Nippon Telegraph and Telephone Corporation
Tomohide YAMAMOTO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DECRYPTION SERVICE PROVIDING DEVICE, PROCESSING DEVICE, SAFETY EVAL...
Publication number
20150358162
Publication date
Dec 10, 2015
Nippon Telegraph and Telephone Corporation
Tetsutaro KOBAYASHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE