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Koki Hamada
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Yokohama-City, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Secure strong mapping computing systems, methods, secure computing...
Patent number
11,886,876
Issue date
Jan 30, 2024
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Secure joining system, method, secure computing apparatus and program
Patent number
11,888,973
Issue date
Jan 30, 2024
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
G06 - COMPUTING CALCULATING COUNTING
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
Secret joining system, method, secret calculation apparatus and pro...
Patent number
11,797,540
Issue date
Oct 24, 2023
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Secure aggregate function computation system, secure computation ap...
Patent number
11,593,362
Issue date
Feb 28, 2023
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
G06 - COMPUTING CALCULATING COUNTING
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
Secure reading apparatus, secure writing apparatus, method thereof,...
Patent number
11,514,192
Issue date
Nov 29, 2022
Nippon Telegraph and Telephone Corporation
Koki Hamada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Secure reading and writing apparatus, secure reading and writing me...
Patent number
11,508,262
Issue date
Nov 22, 2022
Nippon Telegraph and Telephone Corporation
Koki Hamada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Coating and method for forming the same
Patent number
11,504,738
Issue date
Nov 22, 2022
IHI Corporation
Naoki Sato
B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information
Patent Grant
Secret table reference system, method, secret calculation apparatus...
Patent number
11,480,991
Issue date
Oct 25, 2022
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
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 aggregate median system, secure computation apparatus, secur...
Patent number
11,316,674
Issue date
Apr 26, 2022
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
11,294,633
Issue date
Apr 5, 2022
Nippon Telegraph and Telephone Corporation
Koki Hamada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Agreement system, agreement apparatus, program, and recording medium
Patent number
11,265,155
Issue date
Mar 1, 2022
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secure equijoin system, secure equijoin device, secure equijoin met...
Patent number
11,250,004
Issue date
Feb 15, 2022
Nippon Telegraph and Telephone Corporation
Dai Ikarashi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Secure computation for reading multiple elements from a secure text...
Patent number
11,200,346
Issue date
Dec 14, 2021
Nippon Telegraph and Telephone Corporation
Koki Hamada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Secure computation system, secure computation device, secure comput...
Patent number
11,164,484
Issue date
Nov 2, 2021
Nippon Telegraph and Telephone Corporation
Koki Hamada
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Secure computation system, secure computation device, secure comput...
Patent number
11,121,868
Issue date
Sep 14, 2021
Nippon Telegraph and Telephone Corporation
Koki Hamada
G06 - COMPUTING CALCULATING COUNTING
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
Concealed-decision-tree computation system, apparatus, method, and...
Patent number
10,992,462
Issue date
Apr 27, 2021
Nippon Telegraph and Telephone Corporation
Ryo Kikuchi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Secret authentication code adding device, secret authentication cod...
Patent number
10,972,271
Issue date
Apr 6, 2021
Nippon Telegraph and Telephone Corporation
Koki Hamada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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
Secret random number synthesizing device, secret random number synt...
Patent number
10,657,847
Issue date
May 19, 2020
Nippon Telegraph and Telephone Corporation
Koki Hamada
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
Matrix and key generation device, matrix and key generation system,...
Patent number
10,469,257
Issue date
Nov 5, 2019
Nippon Telegraph and Telephone Corporation
Koki Hamada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Nondecreasing sequence determining device, method and program
Patent number
10,333,697
Issue date
Jun 25, 2019
Nippon Telegraph and Telephone Corporation
Koki Hamada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Device, method and program for detecting positions of partial chara...
Patent number
10,291,396
Issue date
May 14, 2019
Nippon Telegraph and Telephone Corporation
Koki Hamada
G06 - COMPUTING CALCULATING COUNTING
Patents Applications
last 30 patents
Information
Patent Application
SECRET GROUPING APPARATUS, SECRET GROUPING SYSTEM, SECRET GROUPING...
Publication number
20230401263
Publication date
Dec 14, 2023
Nippon Telegraph and Telephone Corporation
Koki HAMADA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECRET DECISION TREE LEARNING APPARATUS, SECRET DECISION TREE LEARN...
Publication number
20230376790
Publication date
Nov 23, 2023
Nippon Telegraph and Telephone Corporation
Koki HAMADA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
PARAMETER ESTIMATION APPARATUS, PARAMETER ESTIMATION SYSTEM, PARAME...
Publication number
20230367846
Publication date
Nov 16, 2023
Nippon Telegraph and Telephone Corporation
Ibuki MISHINA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECRET DECISION TREE TEST APPARATUS, SECRET DECISION TREE TEST SYST...
Publication number
20230325304
Publication date
Oct 12, 2023
Nippon Telegraph and Telephone Corporation
Koki HAMADA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECRET DECISION TREE TEST APPARATUS, SECRET DECISION TREE TEST SYST...
Publication number
20230273771
Publication date
Aug 31, 2023
Nippon Telegraph and Telephone Corporation
Koki HAMADA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
ENCRYPTED DATA ANALYSIS DEVICE, ENCRYPTED DATA ANALYSIS METHOD, AND...
Publication number
20230090900
Publication date
Mar 23, 2023
Nippon Telegraph and Telephone Corporation
Ryo KIKUCHI
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECRET HASH TABLE CONSTRUCTION SYSTEM, REFERENCE SYSTEM, METHODS FO...
Publication number
20230039723
Publication date
Feb 9, 2023
Nippon Telegraph and Telephone Corporation
Atsunori ICHIKAWA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SECRET MAXIMUM VALUE CALCULATION APPARATUS, METHOD AND PROGRAM
Publication number
20230033922
Publication date
Feb 2, 2023
Nippon Telegraph and Telephone Corporation
Koki HAMADA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECRET MAXIMUM VALUE CALCULATION APPARATUS, METHOD AND PROGRAM
Publication number
20230029772
Publication date
Feb 2, 2023
Nippon Telegraph and Telephone Corporation
Koki HAMADA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMPUTATION APPARATUS, METHOD AND PROGRAM FOR THE SAME
Publication number
20220413802
Publication date
Dec 29, 2022
Nippon Telegraph and Telephone Corporation
Hiroki SUDO
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECRET SURVIVAL DATA PROCESSING SYSTEM, SECRET SURVIVAL DATA PROCES...
Publication number
20220360431
Publication date
Nov 10, 2022
Nippon Telegraph and Telephone Corporation
Atsunori ICHIKAWA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SECRET MULTIPLE REPETITION CALCULATION APPARATUS, METHOD AND PROGRAM
Publication number
20220350638
Publication date
Nov 3, 2022
Nippon Telegraph and Telephone Corporation
Koki HAMADA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
APPROXIMATE FUNCTION CALCULATION APPARATUS, METHOD AND PROGRAM
Publication number
20220335104
Publication date
Oct 20, 2022
Nippon Telegraph and Telephone Corporation
Koki HAMADA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
DATA ACCESS METHOD, DATA STORAGE SYSTEM, SERVER APPARATUS, CLIENT A...
Publication number
20220329419
Publication date
Oct 13, 2022
Nippon Telegraph and Telephone Corporation
Atsunori ICHIKAWA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECURE GRADIENT DESCENT COMPUTATION METHOD, SECURE DEEP LEARNING ME...
Publication number
20220329408
Publication date
Oct 13, 2022
Nippon Telegraph and Telephone Corporation
Ibuki MISHINA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECURE CONJUGATE GRADIENT METHOD COMPUTATION SYSTEM, SECURE COMPUTA...
Publication number
20220318338
Publication date
Oct 6, 2022
Nippon Telegraph and Telephone Corporation
Koki HAMADA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECRET SOFTMAX FUNCTION CALCULATION SYSTEM, SECRET SOFTMAX CALCULAT...
Publication number
20220292362
Publication date
Sep 15, 2022
Nippon Telegraph and Telephone Corporation
Ibuki MISHINA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECURE DIVISION SYSTEM, SECURE COMPUTATION APPARATUS, SECURE DIVISI...
Publication number
20220224516
Publication date
Jul 14, 2022
Nippon Telegraph and Telephone Corporation
Koki HAMADA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECURE ARRAY ACCESS APPARATUS, SECURE ARRAY ACCESS METHOD, AND PROGRAM
Publication number
20220114110
Publication date
Apr 14, 2022
Nippon Telegraph and Telephone Corporation
Koki HAMADA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
ANALYSIS QUERY RESPONSE SYSTEM, ANALYSIS QUERY EXECUTION APPARATUS,...
Publication number
20220058290
Publication date
Feb 24, 2022
Nippon Telegraph and Telephone Corporation
Atsunori ICHIKAWA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECRET SIGMOID FUNCTION CALCULATION SYSTEM, SECRET LOGISTIC REGRESS...
Publication number
20220006614
Publication date
Jan 6, 2022
Nippon Telegraph and Telephone Corporation
Ibuki MISHINA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECURE AGGREGATE MEDIAN SYSTEM, SECURE COMPUTATION APPARATUS, SECUR...
Publication number
20210377005
Publication date
Dec 2, 2021
Nippon Telegraph and Telephone Corporation
Dai IKARASHI
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Application
SECRET SIGMOID FUNCTION CALCULATION SYSTEM, SECRET LOGISTIC REGRESS...
Publication number
20210358332
Publication date
Nov 18, 2021
Nippon Telegraph and Telephone Corporation
Ibuki MISHINA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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
SECURE JOINING SYSTEM, METHOD, SECURE COMPUTING APPARATUS AND PROGRAM
Publication number
20210314145
Publication date
Oct 7, 2021
Nippon Telegraph and Telephone Corporation
Dai IKARASHI
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECRET BATCH APPROXIMATION SYSTEM, SECURE COMPUTATION DEVICE, SECRE...
Publication number
20210287573
Publication date
Sep 16, 2021
Nippon Telegraph and Telephone Corporation
Koki HAMADA
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Application
SECRET JOINING SYSTEM, METHOD, SECRET CALCULATION APPARATUS AND PRO...
Publication number
20210263921
Publication date
Aug 26, 2021
Nippon Telegraph and Telephone Corporation
Dai IKARASHI
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECURE AGGREGATE FUNCTION COMPUTATION SYSTEM, SECURE COMPUTATION AP...
Publication number
20210191927
Publication date
Jun 24, 2021
Nippon Telegraph and Telephone Corporation
Dai IKARASHI
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECURE STRONG MAPPING COMPUTING SYSTEMS, METHODS, SECURE COMPUTING...
Publication number
20210182062
Publication date
Jun 17, 2021
Nippon Telegraph and Telephone Corporation
Dai IKARASHI
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECURE JOINING INFORMATION GENERATION SYSTEM, SECURE JOINING SYSTEM...
Publication number
20210182419
Publication date
Jun 17, 2021
Nippon Telegraph and Telephone Corporation
Dai IKARASHI
G06 - COMPUTING CALCULATING COUNTING