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Koutarou Suzuki
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Kanagawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Key exchange system, communication apparatus, key exchange method a...
Patent number
11,902,428
Issue date
Feb 13, 2024
Nippon Telegraph and Telephone Corporation
Junichi Tomida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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
Circuit concealing apparatus, calculation apparatus, and program
Patent number
11,095,429
Issue date
Aug 17, 2021
Nippon Telegraph and Telephone Corporation
Koutarou Suzuki
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Secret sharing system, sharing apparatus, share management apparatu...
Patent number
8,964,988
Issue date
Feb 24, 2015
Nippon Telegraph and Telephone Corporation
Ryo Nishimaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Functional encryption applied system, information output apparatus,...
Patent number
8,938,068
Issue date
Jan 20, 2015
Nippon Telegraph and Telephone Corporation
Tetsutaro Kobayashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Information generation apparatus, method, program, and recording me...
Patent number
8,619,980
Issue date
Dec 31, 2013
Nippon Telegraph and Telephone Corporation
Koutarou Suzuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secret sharing system, sharing apparatus, share management apparatu...
Patent number
8,549,290
Issue date
Oct 1, 2013
Nippon Telegraph and Telephone Corporation
Ryo Nishimaki
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
Signature generating apparatus, signature verifying apparatus, and...
Patent number
8,458,478
Issue date
Jun 4, 2013
Nippon Telegraph and Telephone Corporation
Koutarou Suzuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
System and method for quantitative competition and recording medium...
Patent number
7,941,361
Issue date
May 10, 2011
Nippon Telegraph and Telephone Corporation
Kunio Kobayashi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Tag privacy protection method, tag device, backend apparatus, updat...
Patent number
7,661,132
Issue date
Feb 9, 2010
Nippon Telegraph and Telephone Corporation
Miyako Ohkubo
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
System and method for quantitative competition and recording medium...
Patent number
7,567,933
Issue date
Jul 28, 2009
Nippon Telegraph and Telephone Corporation
Kunio Kobayashi
G06 - COMPUTING CALCULATING COUNTING
Patents Applications
last 30 patents
Information
Patent Application
KEY EXCHANGE SYSTEM, COMMUNICATION APPARATUS, KEY EXCHANGE METHOD A...
Publication number
20220303124
Publication date
Sep 22, 2022
Nippon Telegraph and Telephone Corporation
Junichi TOMIDA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
CIRCUIT CONCEALING APPARATUS, CALCULATION APPARATUS, AND PROGRAM
Publication number
20200228310
Publication date
Jul 16, 2020
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Koutarou SUZUKI
G06 - COMPUTING CALCULATING COUNTING
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
SECRET SHARING SYSTEM, SHARING APPARATUS, SHARE MANAGEMENT APPARATU...
Publication number
20130114815
Publication date
May 9, 2013
Nippon Telegraph and Telephone Corporation
Ryo Nishimaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
FUNCTIONAL ENCRYPTION APPLIED SYSTEM, INFORMATION OUTPUT APPARATUS,...
Publication number
20120163588
Publication date
Jun 28, 2012
Nippon Telegraph and Telephone Corporation
Tetsutaro Kobayashi
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
SECRET SHARING SYSTEM, SHARING APPARATUS, SHARE MANAGEMENT APPARATU...
Publication number
20120030464
Publication date
Feb 2, 2012
Nippon Telegraph and Telephone Corporation
Ryo Nishimaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
INFORMATION GENERATION APPARATUS,METHOD, PROGRAM, AND RECORDING MED...
Publication number
20120027206
Publication date
Feb 2, 2012
NIPPON TELEGRAPH AND TELEPHONE CORP.
Koutarou Suzuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SYSTEM AND METHOD FOR QUANTITATIVE COMPETITION AND RECORDING MEDIUM...
Publication number
20110178893
Publication date
Jul 21, 2011
Nippon Telegraph and Telephone Corporation
Kunio Kobayashi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SIGNATURE GENERATING APPARATUS, SIGNATURE VERIFYING APPARATUS, AND...
Publication number
20100268957
Publication date
Oct 21, 2010
Nippon Telegraph and Telephone Corporation
Koutarou Suzuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SYSTEM AND METHOD FOR QUANTITATIVE COMPETITION AND RECORDING MEDIUM...
Publication number
20090276325
Publication date
Nov 5, 2009
Nippon Telegraph and Telephone Corporation
Kunio Kobayashi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Tag privacy protecting method, tag device, backened device, updatin...
Publication number
20060080732
Publication date
Apr 13, 2006
Miyako Ohkubo
G06 - COMPUTING CALCULATING COUNTING