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Eiichiro Fujisaki
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Tokyo, JP
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Patents Grants
last 30 patents
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Patent Grant
Encryption device, decryption device, encryption method, decryption...
Patent number
8,897,442
Issue date
Nov 25, 2014
Nippon Telegraph and Telephone Corporation
Eiichiro Fujisaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Encryption apparatus, decryption apparatus, encryption method, decr...
Patent number
8,515,060
Issue date
Aug 20, 2013
Nippon Telegraph and Telephone Corporation
Eiichiro Fujisaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Authentication system, authentication method, attesting device, ver...
Patent number
8,001,384
Issue date
Aug 16, 2011
Nippon Telegraph and Telephone Corporation
Go Yamamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Electronic cash implementing method using a trustee
Patent number
5,901,229
Issue date
May 4, 1999
Nippon Telegraph and Telephone Corp.
Eiichiro Fujisaki
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and apparatus for implementing traceable electronic cash
Patent number
5,889,862
Issue date
Mar 30, 1999
Nippon Telegraph & Telephone Corporation
Kazuo Ohta
G06 - COMPUTING CALCULATING COUNTING
Patents Applications
last 30 patents
Information
Patent Application
ENCRYPTION DEVICE, DECRYPTION DEVICE, ENCRYPTION METHOD, DECRYPTION...
Publication number
20130083921
Publication date
Apr 4, 2013
Nippon Telegraph and Telephone Corporation
Eiichiro Fujisaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
ENCRYPTION APPARATUS, DECRYPTION APPARATUS, ENCRYPTION METHOD, DECR...
Publication number
20120027201
Publication date
Feb 2, 2012
NIPPON TELEGRAPH AND TELEPHONE CORP.
Eiichiro Fujisaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Authentication System, Authentication Method, Attesting Device, Ver...
Publication number
20080133912
Publication date
Jun 5, 2008
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Go Yamamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE