Inventor · disambiguated record

Dai Ikarashi

Also filed as: IKARASHI DAI

70 granted patents·20 pending applications·45 citations·filing 2011–2022

97Inventor score

Technology areasH04L G06F G09C G06N H03M

Files withNIPPON TELEGRAPH & TELEPHONE83 NTT INC3 IKARASHI DAI2 HAMADA KOKI1 NIPPON TELEGRAGH AND TELEPHONE CORP1

Top patents by PatentIndex Score

90 records

0188US10867018B2Secure computation system, secure computation device, secure computation method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2016·Granted Dec 15, 2020·6 cites·17 claims
0282US9432188B2Secret sharing system, data distribution apparatus, distributed data transform apparatus, secret sharing method and programNIPPON TELEGRAPH & TELEPHONE·Filed 2013·Granted Aug 30, 2016·7 cites·16 claims
0380US10348491B2Secret sharing method, secret sharing system, distributing apparatus and programNIPPON TELEGRAPH & TELEPHONE·Filed 2016·Granted Jul 9, 2019·4 cites·7 claims
0477US12079363B2Secure joining information generation system, secure joining system, methods therefor, secure computing apparatus and programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Sep 3, 2024·2 cites·11 claims
0577US11797540B2Secret joining system, method, secret calculation apparatus and programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Oct 24, 2023·2 cites·3 claims
0677US11329808B2Secure computation device, secure computation authentication system, secure computation method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted May 10, 2022·3 cites·9 claims
0774US9064123B2Secure product-sum combination system, computing apparatus, secure product-sum combination method and program thereforIKARASHI DAI·Filed 2012·Granted Jun 23, 2015·5 cites·14 claims
0873US11888973B2Secure joining system, method, secure computing apparatus and programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jan 30, 2024·2 cites·12 claims
0971US10679522B2Secure computation apparatus, secure computation method and programNIPPON TELEGRAPH & TELEPHONE·Filed 2016·Granted Jun 9, 2020·2 cites·8 claims
1071US9992190B2Multi-party secure authentication system, authentication server, intermediate server, multi-party secure authentication method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Jun 5, 2018·3 cites·13 claims
1167US9860058B2Secret computation system, arithmetic unit, secret computation method and programNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Jan 2, 2018·2 cites·8 claims
1266US11515998B2Secure computation device, secure computation method, program, and recording mediumNIPPON TELEGRAPH & TELEPHONE·Filed 2018·Granted Nov 29, 2022·1 cites·12 claims
1363US10748454B2Secret computation apparatus, method for the same, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2016·Granted Aug 18, 2020·1 cites·12 claims
1462US11888977B2Share generating device, share converting device, secure computation system, share generation method, share conversion method, program, and recording mediumNIPPON TELEGRAPH & TELEPHONE·Filed 2022·Granted Jan 30, 2024·0 cites·6 claims
1561US10950144B2Secret falsification detecting system, secret computation apparatus, secret falsification detecting method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2015·Granted Mar 16, 2021·1 cites·5 claims
1660US9679149B2Secret sharing system, data distribution apparatus, distributed data transform apparatus, secret sharing method and programNIPPON TELEGRAPH & TELEPHONE·Filed 2013·Granted Jun 13, 2017·1 cites·6 claims
1759US10002547B2Secret calculation method, secret calculation system, random permutation device, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2015·Granted Jun 19, 2018·1 cites·13 claims
1857US9292258B2Secure sum-of-product computation method, secure sum-of-product computation system, computation apparatus and programs thereforIKARASHI DAI·Filed 2012·Granted Mar 22, 2016·1 cites·17 claims
1955US12452042B2Secure computation apparatus, secure computation method, and programNTT INC·Filed 2020·Granted Oct 21, 2025·0 cites·12 claims
2054US10218495B2Secure computation method, secure computation system, secure computation server, registrant terminal, user terminal and programNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Feb 26, 2019·1 cites·7 claims
2153US11934564B2Secure computation apparatus, secure computation method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Mar 19, 2024·0 cites·11 claims
2252US12166864B2Secure computation apparatus, secure computation method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Dec 10, 2024·0 cites·3 claims
2352US11374743B2Share generating device, share converting device, secure computation system, share generation method, share conversion method, program, and recording mediumNIPPON TELEGRAPH & TELEPHONE·Filed 2018·Granted Jun 28, 2022·0 cites·7 claims
2451US2024256974A1Distributed learning method, distributed learning system, server, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
2550US11880489B2Secret statistical processing systems, methods, statistical processing apparatus and programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jan 23, 2024·0 cites·11 claims
2650US10083314B2Secret parallel processing device, secret parallel processing method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Sep 25, 2018·0 cites·9 claims
2749US11868510B2Secure cross tabulation system, secure computation apparatus, secure cross tabulation method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jan 9, 2024·0 cites·14 claims
2849US11240012B2Secure aggregate order system, secure computation apparatus, secure aggregate order method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Feb 1, 2022·0 cites·10 claims
2948US11886876B2Secure strong mapping computing systems, methods, secure computing apparatus and programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jan 30, 2024·0 cites·8 claims
3048US2025349228A1Secure computation device, secure computation method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2022·Application pending·0 cites
3147US11625363B2Secret deduplication filter generation system, secret deduplication system, method for these, secret calculation apparatus, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Apr 11, 2023·0 cites·4 claims
3247US11593362B2Secure aggregate function computation system, secure computation apparatus, secure aggregate function computation method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Feb 28, 2023·0 cites·5 claims
3347US11595194B2Secure aggregate sum system, secure computation apparatus, secure aggregate sum method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Feb 28, 2023·0 cites·5 claims
3447US11461395B2Confidential sort system and methodNIPPON TELEGRAPH & TELEPHONE·Filed 2018·Granted Oct 4, 2022·0 cites·4 claims
3547US11316674B2Secure aggregate median system, secure computation apparatus, secure aggregate median method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Apr 26, 2022·0 cites·5 claims
3647US10050775B2Element replication device, element replication method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Aug 14, 2018·0 cites·8 claims
3746US12475237B2Secure computation apparatus, secure computation system, secure computation method, and programNTT INC·Filed 2021·Granted Nov 18, 2025·0 cites·6 claims
3846US12412487B2Secret calculation system, apparatus, method and programNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Granted Sep 9, 2025·0 cites·6 claims
3946US12333273B2Secure right shift computation system, secure division system, methods therefor, secure computation apparatus, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jun 17, 2025·0 cites·5 claims
4046US11907641B2Parameter setting apparatus, computation apparatus, method, program, and recoding medium thereofNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Feb 20, 2024·0 cites·10 claims
4146US11480991B2Secret table reference system, method, secret calculation apparatus and programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Oct 25, 2022·0 cites·4 claims
4246US11265155B2Agreement system, agreement apparatus, program, and recording mediumNIPPON TELEGRAPH & TELEPHONE·Filed 2018·Granted Mar 1, 2022·0 cites·9 claims
4346US11251945B2Secure aggregate maximum system, secure aggregate minimum system, secure computation apparatus, secure aggregate maximum method, secure aggregate minimum method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Feb 15, 2022·0 cites·10 claims
4446US11099984B2Permutation apparatus, permutation method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2018·Granted Aug 24, 2021·0 cites·7 claims
4545US12461917B2Secure equi-join apparatus, secure equi-join method, and programNTT INC·Filed 2021·Granted Nov 4, 2025·0 cites·8 claims
4645US12386948B2Secure computation apparatus, secure computation system, secure computation method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Granted Aug 12, 2025·0 cites·5 claims
4745US12353554B2Secure computation system, secure computation apparatus, secure computation method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Jul 8, 2025·0 cites·12 claims
4845US10003460B2Secret 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 thereforNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Jun 19, 2018·0 cites·9 claims
4945US2025068756A1Secure cluster calculation system, secure cluster calculation apparatus, secure cluster calculation method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2022·Application pending·0 cites
5044US12192339B2Secure computation apparatus, secure computation method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Jan 7, 2025·0 cites·12 claims

Showing the top 50 of 90 patent records by PatentIndex Score.

Join the waitlist — get patent alerts

Get an alert when Dai Ikarashi files or is granted a new patent.

We store only your email — no account needed. See our privacy policy.

Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →