Inventor
CHIDA KOJI
JP40 patents
⚠️ This page may combine multiple inventors who share the name “CHIDA KOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON TELEGRAPH & TELEPHONE
27 patentsUS9432188B2Aug 30, 2016
Secret sharing system, data distribution apparatus, distributed data transform apparatus, secret sharing method and program
NIPPON TELEGRAPH & TELEPHONE7 citations84
US10867018B2Dec 15, 2020
Secure computation system, secure computation device, secure computation method, and program
NIPPON TELEGRAPH & TELEPHONE6 citations73
US10679522B2Jun 9, 2020
Secure computation apparatus, secure computation method and program
NIPPON TELEGRAPH & TELEPHONE2 citations73
US9992190B2Jun 5, 2018
Multi-party secure authentication system, authentication server, intermediate server, multi-party secure authentication method, and program
NIPPON TELEGRAPH & TELEPHONE3 citations73
US9860058B2Jan 2, 2018
Secret computation system, arithmetic unit, secret computation method and program
NIPPON TELEGRAPH & TELEPHONE2 citations73
US11329808B2May 10, 2022
Secure computation device, secure computation authentication system, secure computation method, and program
NIPPON TELEGRAPH & TELEPHONE3 citations71
US12335409B2Jun 17, 2025
Information processing apparatus, program execution system, information processing method and program
NIPPON TELEGRAPH & TELEPHONE1 citations63
US11888977B2Jan 30, 2024
Share generating device, share converting device, secure computation system, share generation method, share conversion method, program, and recording medium
NIPPON TELEGRAPH & TELEPHONE0 citations62
US11537726B2Dec 27, 2022
Secret computation system and method
NIPPON TELEGRAPH & TELEPHONE1 citations62
US11374743B2Jun 28, 2022
Share generating device, share converting device, secure computation system, share generation method, share conversion method, program, and recording medium
NIPPON TELEGRAPH & TELEPHONE0 citations62
US6938012B2Aug 30, 2005
Method, apparatus and program for quantitative competition and recording medium having recorded thereon the program
NIPPON TELEGRAPH & TELEPHONE2 citations62
US10218495B2Feb 26, 2019
Secure computation method, secure computation system, secure computation server, registrant terminal, user terminal and program
NIPPON TELEGRAPH & TELEPHONE1 citations56
US11818254B2Nov 14, 2023
Share generating device, reconstructing device, secure computation system, share generation method, reconstruction method, program, and recording medium
NIPPON TELEGRAPH & TELEPHONE0 citations52
US11461395B2Oct 4, 2022
Confidential sort system and method
NIPPON TELEGRAPH & TELEPHONE0 citations52
US11456862B2Sep 27, 2022
Secure computation system, secure computation apparatus, secure computation method, and recording medium
NIPPON TELEGRAPH & TELEPHONE0 citations52
US10885814B2Jan 5, 2021
Share recovery system, share recovery apparatus, share recovery method, and program
NIPPON TELEGRAPH & TELEPHONE0 citations52
US10002547B2Jun 19, 2018
Secret calculation method, secret calculation system, random permutation device, and program
NIPPON TELEGRAPH & TELEPHONE1 citations52
US9679149B2Jun 13, 2017
Secret sharing system, data distribution apparatus, distributed data transform apparatus, secret sharing method and program
NIPPON TELEGRAPH & TELEPHONE1 citations52
US7676399B2Mar 9, 2010
Method, apparatus and program for quantitative competition and recording medium having recorded thereon the program
NIPPON TELEGRAPH & TELEPHONE0 citations52
US12407496B2Sep 2, 2025
Program execution system, data processing apparatus, program execution method and program
NIPPON TELEGRAPH & TELEPHONE0 citations48
US11544350B2Jan 3, 2023
Fisher's exact test calculation apparatus, method, and program
NIPPON TELEGRAPH & TELEPHONE0 citations47
US11081024B2Aug 3, 2021
Secure computation system, secure computation device, secure computation method, and program
NIPPON TELEGRAPH & TELEPHONE0 citations47
US10665137B2May 26, 2020
Inconsistency detecting method, inconsistency detecting system, inconsistency detecting device, and program
NIPPON TELEGRAPH & TELEPHONE0 citations42
US10083314B2Sep 25, 2018
Secret parallel processing device, secret parallel processing method, and program
NIPPON TELEGRAPH & TELEPHONE0 citations42
US10074293B2Sep 11, 2018
Secret calculation method, secret calculation system, sorting device, and program
NIPPON TELEGRAPH & TELEPHONE0 citations42
US10050775B2Aug 14, 2018
Element replication device, element replication method, and program
NIPPON TELEGRAPH & TELEPHONE0 citations42
US10003460B2Jun 19, 2018
Secret quotient transfer device, secret bit decomposition device, secret modulus conversion device, secret quotient transfer method, secret bit decomposition method, secret modulus conversion method, and programs therefor
NIPPON TELEGRAPH & TELEPHONE0 citations42
NTT INC
5 patentsUS12547749B2Feb 10, 2026
Secure search method, system thereof, apparatus thereof, encryption apparatus, searcher terminal, and program
NTT INC0 citations51
US12579225B2Mar 17, 2026
Remote authorization control system, resource access apparatus, authentication apparatus, remote authorization control method and program
NTT INC0 citations47
US12580772B2Mar 17, 2026
Secure consolidation system, information processing apparatus, secure consolidation method, and program
NTT INC0 citations46
US12476817B2Nov 18, 2025
Secure consolidation system, information processing apparatus, secure consolidation method, and program
NTT INC0 citations46
US12542768B2Feb 3, 2026
Key exchange system, server, method, and non-transitory computer-readable recording medium storing program for deploying an intermediate server between the key generation device and the network device
NTT INC0 citations41
VEHICLE ENERGY JAPAN INC
3 patentsIKARASHI DAI
2 patentsUS9064123B2Jun 23, 2015
Secure product-sum combination system, computing apparatus, secure product-sum combination method and program therefor
IKARASHI DAI5 citations70
US9292258B2Mar 22, 2016
Secure sum-of-product computation method, secure sum-of-product computation system, computation apparatus and programs therefor
IKARASHI DAI1 citations49