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Koji Chida
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Share generating device, share converting device, secure computatio...
Patent number
11,888,977
Issue date
Jan 30, 2024
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Share generating device, reconstructing device, secure computation...
Patent number
11,818,254
Issue date
Nov 14, 2023
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Fisher's exact test calculation apparatus, method, and program
Patent number
11,544,350
Issue date
Jan 3, 2023
Nippon Telegraph and Telephone Corporation
Koji Chida
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Secret computation system and method
Patent number
11,537,726
Issue date
Dec 27, 2022
Nippon Telegraph and Telephone Corporation
Satoshi Tanaka
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Confidential sort system and method
Patent number
11,461,395
Issue date
Oct 4, 2022
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Secure computation system, secure computation apparatus, secure com...
Patent number
11,456,862
Issue date
Sep 27, 2022
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Share generating device, share converting device, secure computatio...
Patent number
11,374,743
Issue date
Jun 28, 2022
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secure computation device, secure computation authentication system...
Patent number
11,329,808
Issue date
May 10, 2022
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secure computation system, secure computation device, secure comput...
Patent number
11,081,024
Issue date
Aug 3, 2021
Nippon Telegraph and Telephone Corporation
Koki Hamada
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Share recovery system, share recovery apparatus, share recovery met...
Patent number
10,885,814
Issue date
Jan 5, 2021
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Secure computation system, secure computation device, secure comput...
Patent number
10,867,018
Issue date
Dec 15, 2020
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Secure computation apparatus, secure computation method and program
Patent number
10,679,522
Issue date
Jun 9, 2020
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Inconsistency detecting method, inconsistency detecting system, inc...
Patent number
10,665,137
Issue date
May 26, 2020
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Tampering detection device, tampering detection method and program
Patent number
10,523,422
Issue date
Dec 31, 2019
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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
Secret parallel processing device, secret parallel processing metho...
Patent number
10,083,314
Issue date
Sep 25, 2018
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Secret calculation method, secret calculation system, sorting devic...
Patent number
10,074,293
Issue date
Sep 11, 2018
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Element replication device, element replication method, and program
Patent number
10,050,775
Issue date
Aug 14, 2018
Nippon Telegraph and Telephone Corporation
Koki Hamada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secret quotient transfer device, secret bit decomposition device, s...
Patent number
10,003,460
Issue date
Jun 19, 2018
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secret calculation method, secret calculation system, random permut...
Patent number
10,002,547
Issue date
Jun 19, 2018
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multi-party secure authentication system, authentication server, in...
Patent number
9,992,190
Issue date
Jun 5, 2018
Nippon Telegraph and Telephone Corporation
Ryo Kikuchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secret computation system, arithmetic unit, secret computation meth...
Patent number
9,860,058
Issue date
Jan 2, 2018
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secret sharing system, data distribution apparatus, distributed dat...
Patent number
9,679,149
Issue date
Jun 13, 2017
Nippon Telegraph and Telephone Corporation
Koji Chida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secret sharing system, data distribution apparatus, distributed dat...
Patent number
9,432,188
Issue date
Aug 30, 2016
Nippon Telegraph and Telephone Corporation
Koji Chida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secure computing system, secure computing method, secure computing...
Patent number
9,300,469
Issue date
Mar 29, 2016
Nippon Telegraph and Telephone Corporation
Koji Chida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secure sum-of-product computation method, secure sum-of-product com...
Patent number
9,292,258
Issue date
Mar 22, 2016
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secure product-sum combination system, computing apparatus, secure...
Patent number
9,064,123
Issue date
Jun 23, 2015
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secret sharing system, secret sharing apparatus, secret sharing met...
Patent number
8,989,391
Issue date
Mar 24, 2015
Nippon Telegraph and Telephone Corporation
Koki Hamada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method, apparatus and program for quantitative competition and reco...
Patent number
7,676,399
Issue date
Mar 9, 2010
Nippon Telegraph and Telephone Corporation
Koji Chida
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method, apparatus and program for quantitative competition and reco...
Patent number
6,938,012
Issue date
Aug 30, 2005
Nippon Telegraph and Telephone Corporation
Koji Chida
G06 - COMPUTING CALCULATING COUNTING
Patents Applications
last 30 patents
Information
Patent Application
CERTIFICATE ISSUANCE SUPPORT SYSTEM, CERTIFICATE ISSUANCE SUPPORT M...
Publication number
20240372849
Publication date
Nov 7, 2024
Nippon Telegraph and Telephone Corporation
Ryohei SUZUKI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SECURITY EVALUATION INDEX CALCULATION APPARATUS, SECURITY EVALUATIO...
Publication number
20240370574
Publication date
Nov 7, 2024
Nippon Telegraph and Telephone Corporation
Takayuki MIURA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
KEY EXCHANGE SYSTEM, SERVER, METHOD, AND PROGRAM
Publication number
20240364672
Publication date
Oct 31, 2024
Nippon Telegraph and Telephone Corporation
Tetsuya OKUDA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
CYPHER SYSTEM, CYPHER APPARATUS, CYPHER METHOD, AND PROGRAM
Publication number
20240353885
Publication date
Oct 24, 2024
Nippon Telegraph and Telephone Corporation
Junko TAKAHASHI
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
REGISTRATION APPLICATION SUPPORT SYSTEM AND REGISTRATION APPLICATIO...
Publication number
20240241992
Publication date
Jul 18, 2024
Nippon Telegraph and Telephone Corporation
Ryohei SUZUKI
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
INFORMATION PROCESSING SYSTEM, RESOURCE MANAGEMENT APPARATUS, RESOU...
Publication number
20240241932
Publication date
Jul 18, 2024
Nippon Telegraph and Telephone Corporation
Ryohei SUZUKI
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECURE CONSOLIDATION SYSTEM, INFORMATION PROCESSING APPARATUS, SECU...
Publication number
20240214212
Publication date
Jun 27, 2024
Nippon Telegraph and Telephone Corporation
Koki HAMADA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SECURE CONSOLIDATION SYSTEM, INFORMATION PROCESSING APPARATUS, SECU...
Publication number
20240214213
Publication date
Jun 27, 2024
Nippon Telegraph and Telephone Corporation
Koki HAMADA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SECURE SEARCH METHOD, SYSTEM THEREOF, APPARATUS THEREOF, ENCRYPTION...
Publication number
20240176903
Publication date
May 30, 2024
Nippon Telegraph and Telephone Corporation
Satoshi TAKAHASHI
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECURE SEARCH METHOD, SYSTEM THEREOF, APPARATUS THEREOF, ENCRYPTION...
Publication number
20240169087
Publication date
May 23, 2024
Nippon Telegraph and Telephone Corporation
Satoshi TAKAHASHI
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
INFORMATION PROCESSING APPARATUS, PROGRAM EXECUTION SYSTEM, INFORMA...
Publication number
20240113894
Publication date
Apr 4, 2024
Nippon Telegraph and Telephone Corporation
Tetsuya OKUDA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
REMOTE AUTHORIZATION CONTROL SYSTEM, RESOURCE ACCESS APPARATUS, AUT...
Publication number
20240089259
Publication date
Mar 14, 2024
Nippon Telegraph and Telephone Corporation
Tetsuya OKUDA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
PROGRAM EXECUTION SYSTEM, DATA PROCESSING APPARATUS, PROGRAM EXECUT...
Publication number
20230396415
Publication date
Dec 7, 2023
Nippon Telegraph and Telephone Corporation
Tetsuya OKUDA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
AUTHENTICATION-CONTROL SYSTEM, AUTHENTICATION-CONTROL APPARATUS, AU...
Publication number
20230367852
Publication date
Nov 16, 2023
Nippon Telegraph and Telephone Corporation
Tetsuya OKUDA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SHARE GENERATING DEVICE, SHARE CONVERTING DEVICE, SECURE COMPUTATIO...
Publication number
20220278829
Publication date
Sep 1, 2022
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Dai IKARASHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SHARE GENERATING DEVICE, SHARE CONVERTING DEVICE, SECURE COMPUTATIO...
Publication number
20210135849
Publication date
May 6, 2021
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Dai IKARASHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SECURE COMPUTATION DEVICE, SECURE COMPUTATION AUTHENTICATION SYSTEM...
Publication number
20210028926
Publication date
Jan 28, 2021
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Dai IKARASHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SECRET COMPUTATION SYSTEM AND METHOD
Publication number
20200387616
Publication date
Dec 10, 2020
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Satoshi TANAKA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SHARE GENERATING DEVICE, RECONSTRUCTING DEVICE, SECURE COMPUTATION...
Publication number
20200366466
Publication date
Nov 19, 2020
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Dai IKARASHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
CONFIDENTIAL SORT SYSTEM AND METHOD
Publication number
20200250228
Publication date
Aug 6, 2020
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Dai IKARASHI
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECURE COMPUTATION SYSTEM, SECURE COMPUTATION APPARATUS, SECURE COM...
Publication number
20200213097
Publication date
Jul 2, 2020
Nippon Telegraph and Telephone Corporation
Dai IKARASHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
FISHER'S EXACT TEST CALCULATION APPARATUS, METHOD, AND PROGRAM
Publication number
20190340215
Publication date
Nov 7, 2019
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Koji CHIDA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
FISHER'S EXACT TEST CALCULATION APPARATUS, METHOD, AND PROGRAM
Publication number
20190163722
Publication date
May 30, 2019
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Satoshi HASEGAWA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECURE COMPUTATION SYSTEM, SECURE COMPUTATION DEVICE, SECURE COMPUT...
Publication number
20190156705
Publication date
May 23, 2019
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Koki HAMADA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SECURE COMPUTATION SYSTEM, SECURE COMPUTATION DEVICE, SECURE COMPUT...
Publication number
20180225431
Publication date
Aug 9, 2018
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Dai IKARASHI
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECURE COMPUTATION APPARATUS, SECURE COMPUTATION METHOD AND PROGRAM
Publication number
20180158377
Publication date
Jun 7, 2018
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Dai IKARASHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SHARE RECOVERY SYSTEM, SHARE RECOVERY APPARATUS, SHARE RECOVERY MET...
Publication number
20180053442
Publication date
Feb 22, 2018
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Dai IKARASHI
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Application
INCONSISTENCY DETECTING METHOD, INCONSISTENCY DETECTING SYSTEM, INC...
Publication number
20180025670
Publication date
Jan 25, 2018
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Dai IKARASHI
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Application
SECRET CALCULATION METHOD, SECRET CALCULATION SYSTEM, RANDOM PERMUT...
Publication number
20160335924
Publication date
Nov 17, 2016
Nippon Telegraph and Telephone Corporation
Dai IKARASHI
G06 - COMPUTING CALCULATING COUNTING
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