Inventor · disambiguated record
Tetsutaro Kobayashi
Also filed as: KOBAYASHI TETSUTARO
45 granted patents·6 pending applications·137 citations·filing 1998–2022
96Inventor score
Top patents by PatentIndex Score
51 records- 0187US8995660B2Cryptographic system, cryptographic communication method, encryption apparatus, key generation apparatus, decryption apparatus, content server, program, and storage mediumKOBAYASHI TETSUTARO·Filed 2011·Granted Mar 31, 2015·24 cites·38 claims
- 0283US9037623B2Proxy calculation system, proxy calculation method, proxy calculation requesting apparatus, and proxy calculation program and recording medium thereforYAMAMOTO GO·Filed 2011·Granted May 19, 2015·10 cites·18 claims
- 0381US8964982B2Cryptographic system, cryptographic communication method, encryption apparatus, key generation apparatus, decryption apparatus, content server, program, and storage mediumTAKEUCHI KAKU·Filed 2010·Granted Feb 24, 2015·15 cites·27 claims
- 0479US8938068B2Functional encryption applied system, information output apparatus, information processing apparatus, encryption protocol execution method, information output method, information processing method, program and recording mediumKOBAYASHI TETSUTARO·Filed 2010·Granted Jan 20, 2015·7 cites·34 claims
- 0571US11516195B2Terminal device, key distribution management device, server-client system, communication method, and programsNIPPON TELEGRAPH & TELEPHONE·Filed 2017·Granted Nov 29, 2022·2 cites·8 claims
- 0669US10630465B2Key exchange method, key exchange system, communication device and storage medium thereforeNIPPON TELEGRAPH & TELEPHONE·Filed 2017·Granted Apr 21, 2020·2 cites·12 claims
- 0767US11483145B2Key exchange device, key exchange system, key exchange method, and key exchange program for exchanging a key with another deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2018·Granted Oct 25, 2022·1 cites·8 claims
- 0865US11451518B2Communication device, server device, concealed communication system, methods for the same, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Sep 20, 2022·1 cites·9 claims
- 0965US10686604B2Key device, key cloud system, decryption method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Jun 16, 2020·2 cites·11 claims
- 1064US8488780B2Finite field calculation apparatus, finite field calculation method and recording mediumTAKAHASHI GEN·Filed 2010·Granted Jul 16, 2013·2 cites·45 claims
- 1163US9607158B2Proxy computing system, computing apparatus, capability providing apparatus, proxy computing method, capability providing method, program, and recording mediumYAMAMOTO GO·Filed 2011·Granted Mar 28, 2017·1 cites·61 claims
- 1261US6430588B1Apparatus and method for elliptic-curve multiplication and recording medium having recorded thereon a program for implementing the methodNIPPON TELEGRAPH & TELEPHONE·Filed 1999·Granted Aug 6, 2002·41 cites·69 claims
- 1360US12034862B2Anonymous broadcast method, key exchange method, anonymous broadcast system, key exchange system, communication device, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2022·Granted Jul 9, 2024·0 cites·4 claims
- 1458US9960906B2Proxy computing system, computing apparatus, capability providing apparatus, proxy computing method, capability providing method, program, and recording mediumNIPPON TELEGRAPH & TELEPHONE·Filed 2016·Granted May 1, 2018·0 cites·29 claims
- 1558US9794060B2Proxy computing system, computing apparatus, capability providing apparatus, proxy computing method, capability providing method, program, and recording mediumNIPPON TELEGRAPH & TELEPHONE·Filed 2016·Granted Oct 17, 2017·0 cites·10 claims
- 1657US10361841B2Proxy computing system, computing apparatus, capability providing apparatus, proxy computing method, capability providing method, program, and recording mediumNIPPON TELEGRAPH & TELEPHONE·Filed 2017·Granted Jul 23, 2019·0 cites·21 claims
- 1756US11677543B2Key exchange method and key exchange systemNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Granted Jun 13, 2023·0 cites·4 claims
- 1854US6795553B1Method and apparatus for modular inversion for information security and recording medium with a program for implementing the methodNIPPON TELEGRAPH & TELEPHONE·Filed 1998·Granted Sep 21, 2004·26 cites·38 claims
- 1953US7831651B2Method and apparatus for modular inversion for information security and recording medium with a program for implementing the methodNIPPON TELEGRAPH & TELEPHONE·Filed 2004·Granted Nov 9, 2010·3 cites·21 claims
- 2050US11985250B2Anonymous broadcast method, key exchange method, anonymous broadcast system, key exchange system, communication device, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2018·Granted May 14, 2024·0 cites·4 claims
- 2149US9735963B2Decryption service providing device, processing device, safety evaluation device, program, and recording mediumNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Aug 15, 2017·0 cites·15 claims
- 2248US11258588B2Key exchange method and key exchange systemNIPPON TELEGRAPH & TELEPHONE·Filed 2017·Granted Feb 22, 2022·0 cites·4 claims
- 2348US9842086B2Calculation device, calculation method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Dec 12, 2017·0 cites·5 claims
- 2447US11902421B2Server device, communication terminal, communication system, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Feb 13, 2024·0 cites·7 claims
- 2547US2025300819A1Key exchange system, hub apparatus, qkd apparatus, method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2022·Application pending·0 cites
- 2646US11388001B2Encrypted communication device, encrypted communication system, encrypted communication method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2018·Granted Jul 12, 2022·0 cites·6 claims
- 2746US10163370B2Decoding apparatus, decoding capability providing apparatus, method thereof and programNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Dec 25, 2018·0 cites·11 claims
- 2844US10033711B2Directory service device, client device, key cloud system, method thereof, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Jul 24, 2018·0 cites·4 claims
- 2944US2024061648A1Scalar multiplication system, scalar multiplication apparatus, scalar multiplication method and programNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 3044US2025300820A1Key exchange system, qkd apparatus, hub apparatus, method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2022·Application pending·0 cites
- 3143US12395322B2Encryption apparatus, cypher communication system, encryption method and programNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Granted Aug 19, 2025·0 cites·7 claims
- 3243US11336441B2Communication terminal, server apparatus, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2018·Granted May 17, 2022·0 cites·2 claims
- 3343US11190499B2Communication terminals, server devices, and programsNIPPON TELEGRAPH & TELEPHONE·Filed 2017·Granted Nov 30, 2021·0 cites·12 claims
- 3443US11177949B2Data sharing method, data sharing system, data sharing server, communication terminal and programNIPPON TELEGRAPH & TELEPHONE·Filed 2018·Granted Nov 16, 2021·0 cites·4 claims
- 3543US9894056B2Segmented secret-key storage system, segment storage apparatus, segmented secret-key storage methodNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Feb 13, 2018·0 cites·13 claims
- 3643US2016148002A1Key storage apparatus, key storage method and program thereforNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Application pending·0 cites
- 3742US11882208B2Chatbot system, information processing apparatus, information processing method and programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jan 23, 2024·0 cites·6 claims
- 3842US11411720B2Key distribution system, terminal device, key distribution method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Aug 9, 2022·0 cites·5 claims
- 3942US2024205206A1Key exchange system, terminal, server, key exchange method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 4042US2024129111A1Key exchange system, terminal, server, key exchange method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 4141US11765137B2Message transmission system, communication terminal, server apparatus, message transmission method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2017·Granted Sep 19, 2023·0 cites·9 claims
- 4241US10979411B2Authentication control system, server apparatus, client apparatus, authentication control method, authentication method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2016·Granted Apr 13, 2021·0 cites·24 claims
- 4339US11336436B2Key distribution system and method, key generation apparatus, representative user terminal, server apparatus, user terminal, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2018·Granted May 17, 2022·0 cites·2 claims
- 4438US12438697B2Communication system, information processing apparatus, communication method and programNTT INC·Filed 2021·Granted Oct 7, 2025·0 cites·6 claims
- 4538US11223472B2Encrypted message search method, message transmission/reception system, server, terminal and programNIPPON TELEGRAPH & TELEPHONE·Filed 2017·Granted Jan 11, 2022·0 cites·7 claims
- 4638US9542155B2Proxy calculation system, method, request device and program thereofYAMAMOTO GO·Filed 2012·Granted Jan 10, 2017·0 cites·7 claims
- 4737US10673629B2Data transmission and reception method and systemNIPPON TELEGRAPH & TELEPHONE·Filed 2016·Granted Jun 2, 2020·0 cites·5 claims
- 4837US10419213B2Key exchange method, key exchange system, key device, terminal device, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2016·Granted Sep 17, 2019·0 cites·10 claims
- 4937US10275960B2Security system, management apparatus, permission apparatus, terminal apparatus, security method and programNIPPON TELEGRAPH & TELEPHONE·Filed 2015·Granted Apr 30, 2019·0 cites·8 claims
- 5036US10546140B2Leakage prevention apparatus, leakage prevention method and programNIPPON TELEGRAPH & TELEPHONE·Filed 2016·Granted Jan 28, 2020·0 cites·10 claims
Showing the top 50 of 51 patent records by PatentIndex Score.
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