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Hitoshi FUJI
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Musashino-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Secret statistical processing systems, methods, statistical process...
Patent number
11,880,489
Issue date
Jan 23, 2024
Nippon Telegraph and Telephone Corporation
Satoshi Tanaka
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Authentication control system, server apparatus, client apparatus,...
Patent number
10,979,411
Issue date
Apr 13, 2021
Nippon Telegraph and Telephone Corporation
Tetsutaro Kobayashi
G06 - COMPUTING CALCULATING COUNTING
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
Leakage prevention apparatus, leakage prevention method and program
Patent number
10,546,140
Issue date
Jan 28, 2020
Nippon Telegraph and Telephone Corporation
Reo Yoshida
G06 - COMPUTING CALCULATING COUNTING
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
Secure computation method, secure computation system, secure comput...
Patent number
10,218,495
Issue date
Feb 26, 2019
Nippon Telegraph and Telephone Corporation
Teruko Miyata
G06 - COMPUTING CALCULATING COUNTING
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
Information
Patent Grant
Method and system for detecting denial-of-service attack
Patent number
7,636,942
Issue date
Dec 22, 2009
Nippon Telegraph and Telephone Corporation
Masaki Hamada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Distributed denial of service attack defense method and device
Patent number
7,188,366
Issue date
Mar 6, 2007
Nippon Telegraph and Telephone Corporation
Eric Yi-hua Chen
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
SECRET STATISTICAL PROCESSING SYSTEMS, METHODS, STATISTICAL PROCESS...
Publication number
20210342476
Publication date
Nov 4, 2021
Nippon Telegraph and Telephone Corporation
Satoshi TANAKA
G06 - COMPUTING CALCULATING COUNTING
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
AUTHENTICATION CONTROL SYSTEM, SERVER APPARATUS, CLIENT APPARATUS,...
Publication number
20180359234
Publication date
Dec 13, 2018
Nippon Telegraph and Telephone Corporation
Tetsutaro KOBAYASHI
G06 - COMPUTING CALCULATING COUNTING
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
LEAKAGE PREVENTION APPARATUS, LEAKAGE PREVENTION METHOD AND PROGRAM
Publication number
20170372086
Publication date
Dec 28, 2017
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Reo YOSHIDA
G06 - COMPUTING CALCULATING COUNTING
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
SECURE COMPUTATION METHOD, SECURE COMPUTATION SYSTEM, SECURE COMPUT...
Publication number
20160330018
Publication date
Nov 10, 2016
Nippon Telegraph and Telephone Corporation
Teruko MIYATA
G06 - COMPUTING CALCULATING COUNTING
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
Information
Patent Application
Repeater, repeating method, repeating program, and network attack d...
Publication number
20070166051
Publication date
Jul 19, 2007
NIPPON TELEGRAPH AND TELEPHONE CORP.
Katsuhiro Sebayashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Network attack combating method, network attack combating device an...
Publication number
20070118896
Publication date
May 24, 2007
Nippon Telegraph and Telephone Corporation
Yuji Soejima
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method and system for detecting denial-of-service attack
Publication number
20070067839
Publication date
Mar 22, 2007
NIPPON TELEGRAPH AND TELEPHONE CORP.
Masaki Hamada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Distributed denial of service attack defense method and device
Publication number
20020032854
Publication date
Mar 14, 2002
Eric Yi-Hua Chen
H04 - ELECTRIC COMMUNICATION TECHNIQUE