| Patent | Date |
|---|
Communication device, server device, concealed communication system, methods for the same, and program
Grant 11,451,518 - Kobayashi , et al. September 20, 2 | 2022-09-20 |
Key distribution system, terminal device, key distribution method, and program
Grant 11,411,720 - Okano , et al. August 9, 2 | 2022-08-09 |
Encrypted communication device, encrypted communication system, encrypted communication method, and program
Grant 11,388,001 - Yoshida , et al. July 12, 2 | 2022-07-12 |
Communication terminal, server apparatus, and program
Grant 11,336,441 - Okano , et al. May 17, 2 | 2022-05-17 |
Key distribution system and method, key generation apparatus, representative user terminal, server apparatus, user terminal, and program
Grant 11,336,436 - Yoshida , et al. May 17, 2 | 2022-05-17 |
Key exchange method and key exchange system
Grant 11,258,588 - Yoshida , et al. February 22, 2 | 2022-02-22 |
Encrypted message search method, message transmission/reception system, server, terminal and program
Grant 11,223,472 - Okano , et al. January 11, 2 | 2022-01-11 |
Server Device, Communication Terminal, Communication System, And Program
App 20210391981 - OKANO; Yuki ; et al. | 2021-12-16 |
Communication terminals, server devices, and programs
Grant 11,190,499 - Okano , et al. November 30, 2 | 2021-11-30 |
Data sharing method, data sharing system, data sharing server, communication terminal and program
Grant 11,177,949 - Okano , et al. November 16, 2 | 2021-11-16 |
Key Exchange Method And Key Exchange System
App 20210314146 - YOSHIDA; Reo ; et al. | 2021-10-07 |
Communication Terminal, Server Apparatus, And Program
App 20210184844 - OKANO; Yuki ; et al. | 2021-06-17 |
Communication Device, Server Device, Concealed Communication System, Methods For The Same, And Program
App 20210126906 - KOBAYASHI; Tetsutaro ; et al. | 2021-04-29 |
Authentication control system, server apparatus, client apparatus, authentication control method, authentication method, and program
Grant 10,979,411 - Kobayashi , et al. April 13, 2 | 2021-04-13 |
Encrypted Communication Device, Encrypted Communication System, Encrypted Communication Method, And Program
App 20210091946 - YOSHIDA; Reo ; et al. | 2021-03-25 |
Key Distribution System, Terminal Device, Key Distribution Method, And Program
App 20210083853 - OKANO; Yuki ; et al. | 2021-03-18 |
Data Sharing Method, Data Sharing System, Data Sharing Server, Communication Terminal And Program
App 20200374114 - OKANO; Yuki ; et al. | 2020-11-26 |
Anonymous Broadcast Method, Key Exchange Method, Anonymous Broadcast System, Key Exchange System, Communication Device, And Program
App 20200358622 - YOSHIDA; Reo ; et al. | 2020-11-12 |
Key Exchange Device, Key Exchange System, Key Exchange Method, And Key Exchange Program
App 20200274704 - MATSUI; Masahiro ; et al. | 2020-08-27 |
Key Exchange Method And Key Exchange System
App 20200252208 - Kind Code | 2020-08-06 |
Key device, key cloud system, decryption method, and program
Grant 10,686,604 - Saito , et al. | 2020-06-16 |
Data transmission and reception method and system
Grant 10,673,629 - Yoshida , et al. | 2020-06-02 |
Key Distribution System And Method, Key Generation Apparatus, Representative User Terminal, Server Apparatus, User Terminal, And
App 20200136813 - YOSHIDA; Reo ; et al. | 2020-04-30 |
Key exchange method, key exchange system, communication device and storage medium therefore
Grant 10,630,465 - Kobayashi , et al. | 2020-04-21 |
Message Transmission System, Communication Terminal, Server Apparatus, Message Transmission Method, And Program
App 20200084185 - OKANO; Yuki ; et al. | 2020-03-12 |
Leakage prevention apparatus, leakage prevention method and program
Grant 10,546,140 - Yoshida , et al. Ja | 2020-01-28 |
Key exchange method, key exchange system, key device, terminal device, and program
Grant 10,419,213 - Nagai , et al. Sept | 2019-09-17 |
Communication Terminals, Server Devices, And Programs
App 20190238523 - OKANO; Yuki ; et al. | 2019-08-01 |
Proxy computing system, computing apparatus, capability providing apparatus, proxy computing method, capability providing method, program, and recording medium
Grant 10,361,841 - Yamamoto , et al. | 2019-07-23 |
Key exchange method, key exchange system, key distribution device, communication device, and program
Grant 10,355,856 - Yoshida , et al. July 16, 2 | 2019-07-16 |
Encrypted Message Search Method, Message Transmission/reception System, Server, Terminal And Program
App 20190215158 - OKANO; Yuki ; et al. | 2019-07-11 |
Security system, management apparatus, permission apparatus, terminal apparatus, security method and program
Grant 10,275,960 - Fuji , et al. | 2019-04-30 |
Terminal Device, Key Distribution Management Device, Server-client System, Communication Method, And Programs
App 20190124058 - KAWAHARA; Yuto ; et al. | 2019-04-25 |
Decoding apparatus, decoding capability providing apparatus, method thereof and program
Grant 10,163,370 - Yoshida , et al. Dec | 2018-12-25 |
Authentication Control System, Server Apparatus, Client Apparatus, Authentication Control Method, Authentication Method, And Program
App 20180359234 - KOBAYASHI; Tetsutaro ; et al. | 2018-12-13 |
Directory service device, client device, key cloud system, method thereof, and program
Grant 10,033,711 - Yamamoto , et al. July 24, 2 | 2018-07-24 |
Key Exchange Method, Key Exchange System, Key Distribution Device, Communication Device, And Program
App 20180183583 - YOSHIDA; Reo ; et al. | 2018-06-28 |
Proxy computing system, computing apparatus, capability providing apparatus, proxy computing method, capability providing method, program, and recording medium
Grant 9,960,906 - Yamamoto , et al. May 1, 2 | 2018-05-01 |
Data Transmission And Reception Method And System
App 20180115414 - YOSHIDA; Reo ; et al. | 2018-04-26 |
Segmented secret-key storage system, segment storage apparatus, segmented secret-key storage method
Grant 9,894,056 - Kobayashi , et al. February 13, 2 | 2018-02-13 |
Leakage Prevention Apparatus, Leakage Prevention Method And Program
App 20170372086 - YOSHIDA; Reo ; et al. | 2017-12-28 |
Key Exchange Method, Key Exchange System, Key Device, Terminal Device, And Program
App 20170373841 - NAGAI; Akira ; et al. | 2017-12-28 |
Calculation device, calculation method, and program
Grant 9,842,086 - Kobayashi , et al. December 12, 2 | 2017-12-12 |
Proxy Computing System, Computing Apparatus, Capability Providing Apparatus, Proxy Computing Method, Capability Providing Method, Program, And Recording Medium
App 20170353296 - YAMAMOTO; Go ; et al. | 2017-12-07 |
Key Exchange Method And Key Exchange System
App 20170302445 - KOBAYASHI; Tetsutaro ; et al. | 2017-10-19 |
Proxy computing system, computing apparatus, capability providing apparatus, proxy computing method, capability providing method, program, and recording medium
Grant 9,794,060 - Yamamoto , et al. October 17, 2 | 2017-10-17 |
Decryption service providing device, processing device, safety evaluation device, program, and recording medium
Grant 9,735,963 - Kobayashi , et al. August 15, 2 | 2017-08-15 |
Security System, Management Apparatus, Permission Apparatus, Terminal Apparatus, Security Method And Program
App 20170186255 - FUJI; Hitoshi ; et al. | 2017-06-29 |
Proxy Computing System, Computing Apparatus, Capability Providing Apparatus, Proxy Computing Method, Capability Providing Method, Program, And Recording Medium
App 20170111165 - YAMAMOTO; Go ; et al. | 2017-04-20 |
Proxy Computing System, Computing Apparatus, Capability Providing Apparatus, Proxy Computing Method, Capability Providing Method, Program, And Recording Medium
App 20170104583 - YAMAMOTO; Go ; et al. | 2017-04-13 |
Proxy Computing System, Computing Apparatus, Capability Providing Apparatus, Proxy Computing Method, Capability Providing Method, Program, And Recording Medium
App 20170104582 - YAMAMOTO; Go ; et al. | 2017-04-13 |
Proxy computing system, computing apparatus, capability providing apparatus, proxy computing method, capability providing method, program, and recording medium
Grant 9,607,158 - Yamamoto , et al. March 28, 2 | 2017-03-28 |
Proxy calculation system, method, request device and program thereof
Grant 9,542,155 - Yamamoto , et al. January 10, 2 | 2017-01-10 |
Key Device, Key Cloud System, Decryption Method, And Program
App 20160254914 - SAITO; Tsunekazu ; et al. | 2016-09-01 |
Calculation Device, Calculation Method, And Program
App 20160170937 - KOBAYASHI; Tetsutaro ; et al. | 2016-06-16 |
Key Storage Apparatus, Key Storage Method And Program Therefor
App 20160148002 - KOBAYASHI; Tetsutaro ; et al. | 2016-05-26 |
Decoding Apparatus, Decoding Capability Providing Apparatus, Method Thereof And Program
App 20160133164 - YOSHIDA; Roe ; et al. | 2016-05-12 |
Segmented Secret-key Storage System, Segment Storage Apparatus, Segmented Secret-key Storage Method
App 20160028719 - KOBAYASHI; Tetsutaro ; et al. | 2016-01-28 |
Decryption Service Providing Device, Processing Device, Safety Evaluation Device, Program, And Recording Medium
App 20150358162 - KOBAYASHI; Tetsutaro ; et al. | 2015-12-10 |
Proxy calculation system, proxy calculation method, proxy calculation requesting apparatus, and proxy calculation program and recording medium therefor
Grant 9,037,623 - Yamamoto , et al. May 19, 2 | 2015-05-19 |
Cryptographic system, cryptographic communication method, encryption apparatus, key generation apparatus, decryption apparatus, content server, program, and storage medium
Grant 8,995,660 - Kobayashi , et al. March 31, 2 | 2015-03-31 |
Cryptographic system, cryptographic communication method, encryption apparatus, key generation apparatus, decryption apparatus, content server, program, and storage medium
Grant 8,964,982 - Takeuchi , et al. February 24, 2 | 2015-02-24 |
Functional encryption applied system, information output apparatus, information processing apparatus, encryption protocol execution method, information output method, information processing method, program and recording medium
Grant 8,938,068 - Kobayashi , et al. January 20, 2 | 2015-01-20 |
Proxy Calculation System, Method, Request Device And Program Thereof
App 20130339413 - Yamamoto; Go ; et al. | 2013-12-19 |
Proxy Computing System, Computing Apparatus, Capability Providing Apparatus, Proxy Computing Method, Capability Providing Method, Program, And Recording Medium
App 20130318360 - Yamamoto; Go ; et al. | 2013-11-28 |
Finite field calculation apparatus, finite field calculation method and recording medium
Grant 8,488,780 - Takahashi , et al. July 16, 2 | 2013-07-16 |
Cryptographic System, Cryptographic Communication Method, Encryption Apparatus, Key Generation Apparatus, Decryption Apparatus, Content Server, Program, And Storage Medium
App 20130114810 - Kobayashi; Tetsutaro ; et al. | 2013-05-09 |
Proxy Calculation System, Proxy Calculation Method, Proxy Calculation Requesting Apparatus, And Proxy Calculation Program And Recording Medium Therefor
App 20120323981 - Yamamoto; Go ; et al. | 2012-12-20 |
Functional Encryption Applied System, Information Output Apparatus, Information Processing Apparatus, Encryption Protocol Execution Method, Information Output Method, Information Processing Method, Program And Recording Medium
App 20120163588 - Kobayashi; Tetsutaro ; et al. | 2012-06-28 |
Finite Field Calculation Apparatus, Finite Filed Calculation Method, Program, And Recording Medium
App 20120033805 - Takahashi; Gen ; et al. | 2012-02-09 |
Cryptographic System, Cryptographic Communication Method, Encryption Apparatus, Key Generation Apparatus, Decryption Apparatus, Content Server, Program, And Storage Medium
App 20120027210 - Takeuchi; Kaku ; et al. | 2012-02-02 |
Method and apparatus for modular inversion for information security and recording medium with a program for implementing the method
Grant 7,831,651 - Kobayashi , et al. November 9, 2 | 2010-11-09 |
Method and apparatus for modular inversion for information security and recording medium with a program for implementing the method
App 20050041811 - Kobayashi, Tetsutaro ; et al. | 2005-02-24 |
Method and apparatus for modular inversion for information security and recording medium with a program for implementing the method
Grant 6,795,553 - Kobayashi , et al. September 21, 2 | 2004-09-21 |
Apparatus and method for elliptic-curve multiplication and recording medium having recorded thereon a program for implementing the method
Grant 6,430,588 - Kobayashi , et al. August 6, 2 | 2002-08-06 |
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