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Satoshi Obana
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Database apparatus, method, and program
Patent number
9,600,677
Issue date
Mar 21, 2017
NEC Corporation
Kengo Mori
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Database encryption system, method, and program
Patent number
9,349,023
Issue date
May 24, 2016
NEC Corporation
Kengo Mori
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secret information distribution system, secret information distribu...
Patent number
9,021,257
Issue date
Apr 28, 2015
NEC Corporation
Satoshi Obana
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Verification device, secret information restoration device, verific...
Patent number
8,861,717
Issue date
Oct 14, 2014
NEC Corporation
Satoshi Obana
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Database encryption system, method, and program
Patent number
8,812,877
Issue date
Aug 19, 2014
NEC Corporation
Kengo Mori
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Share generation apparatus, reconstruction apparatus, verification...
Patent number
8,483,386
Issue date
Jul 9, 2013
NEC Corporation
Satoshi Obana
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Shared information generating apparatus and recovering apparatus
Patent number
8,397,142
Issue date
Mar 12, 2013
NEC Corporation
Satoshi Obana
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
System for disabling unauthorized person, encryption device, encryp...
Patent number
8,270,613
Issue date
Sep 18, 2012
NEC Corporation
Jun Furukawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Distributed information generator and restoring device
Patent number
8,214,647
Issue date
Jul 3, 2012
NEC Corporation
Toshinori Araki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Universal-hash-function-family calculation unit and shared-key gene...
Patent number
7,933,905
Issue date
Apr 26, 2011
NEC Corporation
Satoshi Obana
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signature calculation system by use of mobile agent
Patent number
7,103,775
Issue date
Sep 5, 2006
NEC Corporation
Satoshi Obana
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Zero-knowledge proving system and method
Patent number
7,003,541
Issue date
Feb 21, 2006
NEC Corporation
Jun Furukawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Encryption and decryption with endurance to cryptanalysis
Patent number
6,970,561
Issue date
Nov 29, 2005
NEC Corporation
Satoshi Obana
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
ENCRYPTED DATA VERIFICATION SYSTEM, METHOD AND RECORDING MEDIUM
Publication number
20150195090
Publication date
Jul 9, 2015
NEC Corporation
Satoshi Obana
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DATABASE ENCRYPTION SYSTEM, METHOD, AND PROGRAM
Publication number
20150006908
Publication date
Jan 1, 2015
NEC Corporation
Kengo MORI
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
DATABASE APPARATUS, METHOD, AND PROGRAM
Publication number
20140325217
Publication date
Oct 30, 2014
NEC Corporation
Kengo Mori
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
DATABASE ENCRYPTION SYSTEM, METHOD, AND PROGRAM
Publication number
20130246813
Publication date
Sep 19, 2013
NEC Corporation
Kengo Mori
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
VERIFICATION DEVICE, SECRET INFORMATION RESTORATION DEVICE, VERIFIC...
Publication number
20120243679
Publication date
Sep 27, 2012
NEC Corporation
Satoshi Obana
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECRET INFORMATION DISTRIBUTION SYSTEM, SECRET INFORMATION DISTRIBU...
Publication number
20120102321
Publication date
Apr 26, 2012
Satoshi Obana
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SHARE GENERATION APPARATUS, RECONSTRUCTION APPARATUS, VERIFICATION...
Publication number
20100260334
Publication date
Oct 14, 2010
NEC Corporation
Satoshi Obana
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SHARED INFORMATION GENERATING APPARATUS AND RECOVERING APPARATUS
Publication number
20100031128
Publication date
Feb 4, 2010
Satoshi Obana
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
UNIVERSAL-HASH-FUNCTION-FAMILY CALCULATION UNIT AND SHARED-KEY GENE...
Publication number
20090240913
Publication date
Sep 24, 2009
NEC Corporation
Satoshi Obana
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DISTRIBUTED INFORMATION GENERATOR AND RESTORING DEVICE
Publication number
20090204802
Publication date
Aug 13, 2009
NEC CORPORATION
Toshinori Araki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SYSTEM FOR DISABLING UNAUTHORIZED PERSON, ENCRYPTION DEVICE, ENCRYP...
Publication number
20090180619
Publication date
Jul 16, 2009
NEC Corporation
Jun Furukawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Zero-knowledge proving system and method
Publication number
20030065692
Publication date
Apr 3, 2003
NEC Corporation
Jun Furukawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Copyright protection system and method thereof
Publication number
20020154772
Publication date
Oct 24, 2002
Takuya Morishita
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Signature calculation system by use of mobile agent
Publication number
20010016911
Publication date
Aug 23, 2001
NEC Corporation
Satoshi Obana
H04 - ELECTRIC COMMUNICATION TECHNIQUE