FUTA; Yuichi

Patent Applications and Registrations

Patent applications and USPTO patent grants for FUTA; Yuichi.The latest application filed is for "information management method".

Company Profile

13.158.146

FUTA; Yuichi - Ishikawa JP
Futa; Yuichi - Osaka N/A JP
Futa; Yuichi - Osaka-shi JP
Futa, Yuichi - Osaka-fu JP
Futa, Yuichi - Miyakojima-ku JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Information Management Method App 20220278908 - MATSUSHIMA; Hideki ; et al.	2022-09-01
Information management method Grant 11,303,547 - Matsushima , et al. April 12, 2	2022-04-12
Information Management Method App 20210184949 - MATSUSHIMA; Hideki ; et al.	2021-06-17
Advertisement distribution method and advertisement distribution system Grant 10,984,454 - Futa , et al. April 20, 2	2021-04-20
Method and program for controlling portable information terminal Grant 10,972,303 - Ichijo , et al. April 6, 2	2021-04-06
Information management method Grant 10,965,557 - Matsushima , et al. March 30, 2	2021-03-30
Advertisement Distribution Method And Advertisement Distribution System App 20200302483 - FUTA; Yuichi ; et al.	2020-09-24
Advertisement distribution method and advertisement distribution system Grant 10,719,853 - Futa , et al.	2020-07-21
Method And Program For Controlling Portable Information Terminal App 20200119943 - ICHIJO; Ayaka ; et al.	2020-04-16
Method and program for controlling portable information terminal Grant 10,554,434 - Ichijo , et al. Fe	2020-02-04
Information Providing Method And Information Providing Device App 20190311402 - MAEDA; Manabu ; et al.	2019-10-10
Information providing method and information providing device Grant 10,380,635 - Maeda , et al. A	2019-08-13
Information Management Method App 20190215252 - MATSUSHIMA; Hideki ; et al.	2019-07-11
Information management method Grant 10,284,442 - Matsushima , et al.	2019-05-07
Method And Program For Controlling Portable Information Terminal App 20180337800 - ICHIJO; Ayaka ; et al.	2018-11-22
Method and program for controlling portable information terminal Grant 10,069,644 - Ichijo , et al. September 4, 2	2018-09-04
Data provision method using air conditioner log information Grant 9,933,180 - Haga , et al. April 3, 2	2018-04-03
Information Management Method App 20170339033 - MATSUSHIMA; Hideki ; et al.	2017-11-23
Information management method Grant 9,762,459 - Matsushima , et al. September 12, 2	2017-09-12
Information notification method Grant 9,762,407 - Matsuzaki , et al. September 12, 2	2017-09-12
Data processing method, transmitting apparatus, and anomaly detection system Grant 9,697,574 - Haga , et al. July 4, 2	2017-07-04
Battery-history information management apparatus, battery-history information management method, battery-history information management system, and power storage apparatus Grant 9,651,406 - Unagami , et al. May 16, 2	2017-05-16
Recording medium device, terminal device, distribution device, control method, and program recording medium Grant 9,594,883 - Yamaguchi , et al. March 14, 2	2017-03-14
Software updating apparatus, software updating system, invalidation method, and invalidation program Grant 9,594,909 - Maeda , et al. March 14, 2	2017-03-14
Method of managing map information, navigation system, information terminal, and navigation device Grant 9,542,572 - Ichijo , et al. January 10, 2	2017-01-10
Access control method, access control system, communication terminal, and server Grant 9,467,439 - Matsuzaki , et al. October 11, 2	2016-10-11
Method used in a system for remotely controlling an appliance Grant 9,443,421 - Yamaguchi , et al. September 13, 2	2016-09-13
Method for providing data using fridge's log information Grant 9,441,991 - Haga , et al. September 13, 2	2016-09-13
Content distribution system, content management server, content-using device, and control method Grant 9,419,864 - Matsuzaki , et al. August 16, 2	2016-08-16
Method And Program For Controlling Portable Information Terminal App 20160156482 - ICHIJO; Ayaka ; et al.	2016-06-02
Tampering monitoring system, management device, protection control module, and detection module Grant 9,311,487 - Unagami , et al. April 12, 2	2016-04-12
Unauthorized contents detection system Grant 9,270,470 - Nonaka , et al. February 23, 2	2016-02-23
Terminal device, verification device, key distribution device, content playback method, key distribution method, and computer program Grant 9,270,673 - Yamaguchi , et al. February 23, 2	2016-02-23
Data Provision Method Using Air Conditioner Log Information App 20160047566 - HAGA; Tomoyuki ; et al.	2016-02-18
Information Notification Method App 20160006576 - MATSUZAKI; Natsume ; et al.	2016-01-07
Content management device and content management method Grant 9,165,146 - Miura , et al. October 20, 2	2015-10-20
Shared information distributing device, holding device, certificate authority device, and system Grant 9,166,972 - Maeda , et al. October 20, 2	2015-10-20
Information Management Method App 20150281010 - MATSUSHIMA; HIDEKI ; et al.	2015-10-01
Biological information measuring device and control method thereof Grant 9,138,176 - Matsushima , et al. September 22, 2	2015-09-22
Advertisement Distribution Method And Advertisement Distribution System App 20150220998 - Futa; Yuichi ; et al.	2015-08-06
Recording Medium Device, Terminal Device, Distribution Device, Control Method, And Program Recording Medium App 20150178480 - YAMAGUCHI; Takahiro ; et al.	2015-06-25
Method For Providing Data Using Fridge's Log Information App 20150150088 - Haga; Tomoyuki ; et al.	2015-05-28
Terminal device, server device, content recording control system, recording method, and recording permission control method Grant 9,037,863 - Yamaguchi , et al. May 19, 2	2015-05-19
Unauthorized Contents Detection System App 20150127948 - NONAKA; Masao ; et al.	2015-05-07
Shared Information Distributing Device, Holding Device, Certificate Authority Device, And System App 20150121079 - MAEDA; Manabu ; et al.	2015-04-30
Verification method for verifying validity of program, and verification system Grant 9,021,568 - Yamaguchi , et al. April 28, 2	2015-04-28
Recording medium device, terminal device, distribution device, control method, and program recording medium Grant 9,003,188 - Yamaguchi , et al. April 7, 2	2015-04-07
Content distribution system Grant 8,972,300 - Nonaka , et al. March 3, 2	2015-03-03
Unauthorized contents detection system Grant 8,972,737 - Nonaka , et al. March 3, 2	2015-03-03
Measurement device and method of controlling the same Grant 8,938,620 - Matsuzaki , et al. January 20, 2	2015-01-20
Terminal Device, Verification Device, Key Distribution Device, Content Playback Method, Key Distribution Method, And Computer Program App 20150012753 - YAMAGUCHI; Takahiro ; et al.	2015-01-08
Shared information distributing device, holding device, certificate authority device, and system Grant 8,930,660 - Maeda , et al. January 6, 2	2015-01-06
Method Used In A System For Remotely Controlling An Appliance App 20140347173 - Yamaguchi; Takahiro ; et al.	2014-11-27
Information Providing Method And Information Providing Device App 20140344054 - MAEDA; Manabu ; et al.	2014-11-20
Health care system Grant 8,886,936 - Nonaka , et al. November 11, 2	2014-11-11
Terminal device, verification device, key distribution device, content playback method, key distribution method, and recording medium Grant 8,874,936 - Yamaguchi , et al. October 28, 2	2014-10-28
Data Processing Method, Transmitting Apparatus, And Anomaly Detection System App 20140277798 - Haga; Tomoyuki ; et al.	2014-09-18
Tampering monitoring system, control device, and tampering control method Grant 8,800,038 - Futa , et al. August 5, 2	2014-08-05
Verification Method For Verifying Validity Of Program, And Verification System App 20140196134 - YAMAGUCHI; Takahiro ; et al.	2014-07-10
Tampering monitoring system, protection control module, and detection module Grant 8,769,312 - Unagami , et al. July 1, 2	2014-07-01
Monitoring system, program-executing device, monitoring program, recording medium and integrated circuit Grant 8,745,735 - Maeda , et al. June 3, 2	2014-06-03
Game system, game execution apparatus, and portable storage medium Grant 8,740,698 - Nakano , et al. June 3, 2	2014-06-03
Tampering monitoring system, control device, and tampering control method Grant 8,726,374 - Unagami , et al. May 13, 2	2014-05-13
Terminal device, server device, content recording control system, recording method, and recording permission control method Grant 8,726,030 - Yamaguchi , et al. May 13, 2	2014-05-13
Unauthorized Contents Detection System App 20140129842 - NONAKA; Masao ; et al.	2014-05-08
Tampering monitoring system, management apparatus, and management method Grant 8,707,430 - Unagami , et al. April 22, 2	2014-04-22
Method Of Managing Map Information, Navigation System, Information Terminal, And Navigation Device App 20140090087 - Ichijo; Ayaka ; et al.	2014-03-27
Method and device that verifies application program modules Grant 8,683,214 - Unagami , et al. March 25, 2	2014-03-25
Data encryption device Grant 8,683,229 - Yokota , et al. March 25, 2	2014-03-25
Access Control Method, Access Control System, Communication Terminal, And Server App 20140082716 - MATSUZAKI; Natsume ; et al.	2014-03-20
Unauthorized contents detection system Grant 8,667,291 - Nonaka , et al. March 4, 2	2014-03-04
Software Updating Apparatus, Software Updating System, Invalidation Method, And Invalidation Program App 20140059679 - MAEDA; Manabu ; et al.	2014-02-27
Duplication Judgment Device And Duplication Management System App 20140013453 - Futa; Yuichi ; et al.	2014-01-09
Software updating apparatus, software updating system, invalidation method, and invalidation program Grant 8,600,896 - Maeda , et al. December 3, 2	2013-12-03
Content distribution system Grant 8,601,590 - Nakano , et al. December 3, 2	2013-12-03
Program execution apparatus, control method, control program, and integrated circuit Grant 8,555,089 - Ito , et al. October 8, 2	2013-10-08
Illegal module identifying device, information processing device, illegal module identifying method, illegal module identifying program, integrated circuit, illegal module disabling system, and illegal module disabling method Grant 8,544,093 - Unagami , et al. September 24, 2	2013-09-24
Software update system, management apparatus, recording medium, and integrated circuit Grant 8,516,574 - Unagami , et al. August 20, 2	2013-08-20
Generating PUF error correcting code using redundant hardware Grant 8,510,608 - Futa , et al. August 13, 2	2013-08-13
Content Distribution System, Content Management Server, Content-using Device, And Control Method App 20130198361 - Matsuzaki; Natsume ; et al.	2013-08-01
Content Management Device And Content Management Method App 20130191927 - Miura; Kouji ; et al.	2013-07-25
Migration apparatus, method and system for transferring data protected within a first terminal device to a second terminal device Grant 8,489,873 - Matsushima , et al. July 16, 2	2013-07-16
Encryption device and encryption system Grant 8,484,485 - Nonaka , et al. July 9, 2	2013-07-09
System for making program difficult to read, device for making program difficult to read, and method for making program difficult to read Grant 8,479,018 - Futa , et al. July 2, 2	2013-07-02
Information security device and information security system Grant 8,464,043 - Matsushima , et al. June 11, 2	2013-06-11
Software updating apparatus, software updating system, alteration verification method and alteration verification program Grant 8,464,347 - Maeda , et al. June 11, 2	2013-06-11
Signature and verification method, signature generation device, and signature verification device Grant 8,452,975 - Futa , et al. May 28, 2	2013-05-28
Content reproduction device, content reproduction device control method, content reproduction program, recording medium, and integrated circuit Grant 8,448,259 - Haga , et al. May 21, 2	2013-05-21
Battery History Information Management Device, Battery History Information Management Method, Battery History Information Management System, And Power Storage Device App 20130103355 - Unagami; Yuji ; et al.	2013-04-25
Memory control apparatus, content playback apparatus, control method and recording medium Grant 8,418,256 - Futa , et al. April 9, 2	2013-04-09
Recording Medium Device, Terminal Device, Distribution Device, Control Method, And Program Recording Medium App 20130061053 - Yamaguchi; Takahiro ; et al.	2013-03-07
Terminal Device, Verification Device, Key Distribution Device, Content Playback Method, Key Distribution Method, And Computer Program App 20130054971 - YAMAGUCHI; Takahiro ; et al.	2013-02-28
Group formation/management system, group management device, and member device Grant 8,386,606 - Matsuzaki , et al. February 26, 2	2013-02-26
Tampering Monitoring System, Management Device, Protection Control Module, And Detection Module App 20130039491 - Unagami; Yuji ; et al.	2013-02-14
Management-apparatus card, measuring apparatus, health care system, and method for communicating vital sign data Grant 8,356,170 - Matsuzaki , et al. January 15, 2	2013-01-15
Authenticator apparatus Grant 8,347,091 - Nonaka , et al. January 1, 2	2013-01-01
Terminal Device, Server Device, Content Recording Control System, Recording Method, And Recording Permission Control Method App 20120317661 - YAMAGUCHI; Takahiro ; et al.	2012-12-13
Unauthorized Contents Detection System App 20120290846 - NONAKA; Masao ; et al.	2012-11-15
Program illegiblizing device and method Grant 8,312,297 - Sato , et al. November 13, 2	2012-11-13
Signature generating device, signature generating method and signature generating program Grant 8,280,039 - Futa , et al. October 2, 2	2012-10-02
Tampering Monitoring System, Protection Control Module, And Detection Module App 20120246490 - Unagami; Yuji ; et al.	2012-09-27
Information security device Grant 8,265,267 - Futa , et al. September 11, 2	2012-09-11
Unauthorized contents detection system Grant 8,261,084 - Nonaka , et al. September 4, 2	2012-09-04
Method and device for speeding up key use in key management software with tree structure Grant 8,223,972 - Ito , et al. July 17, 2	2012-07-17
Content management system and content management unit Grant 8,220,064 - Yamauchi , et al. July 10, 2	2012-07-10
Program converter, encrypting device, and encrypting method Grant 8,184,805 - Yokota , et al. May 22, 2	2012-05-22
Telemedical system Grant 8,180,060 - Aizu , et al. May 15, 2	2012-05-15
Detection Apparatus And Detection System App 20120098518 - Unagami; Yuji ; et al.	2012-04-26
Tampering Monitoring System, Control Device, And Tampering Control Method App 20120084557 - Futa; Yuichi ; et al.	2012-04-05
Digital work protection system, recording apparatus, reproduction apparatus, and recording medium Grant 8,132,024 - Nakano , et al. March 6, 2	2012-03-06
Data processing device for reducing power consumption while operating a virtualized environment, and a non-transitory computer-readable recording medium and integrated circuit for performing the same Grant 8,127,168 - Maeda , et al. February 28, 2	2012-02-28
Information security device, information security method, computer program, computer-readable recording medium, and integrated circuit Grant 8,090,957 - Matsuzaki , et al. January 3, 2	2012-01-03
Game System, Game Execution Apparatus, And Portable Storage Medium App 20110319163 - NAKANO; TOSHIHISA ; et al.	2011-12-29
Health Care System App 20110314280 - Nonaka; Masao ; et al.	2011-12-22
Illegal Module Identifying Device, Information Processing Device, Illegal Module Identifying Method, Illegal Module Identifying Program, Integrated Circuit, Illegal Module Disabling System, And Illegal Module Disabling Method App 20110271344 - Unagami; Yuji ; et al.	2011-11-03
Tampering Monitoring System, Management Apparatus, And Management Method App 20110265180 - UNAGAMI; Yuji ; et al.	2011-10-27
Information Processing Device, Management Device, Illegal Module Detection System, Illegal Module Detection Method, Recording Medium On Which Illegal Module Detection Program Is Recorded, Management Method, Recording Medium And Integrated Circuit On Which Management Method Is Recorded App 20110246783 - Unagami; Yuji ; et al.	2011-10-06
Tampering Monitoring System, Control Device, And Tampering Control Method App 20110239297 - Unagami; Yuji ; et al.	2011-09-29
Biological Information Measuring Device And Control Method Thereof App 20110238324 - Matsushima; Hideki ; et al.	2011-09-29
Password recovery system Grant 8,024,577 - Ohmori , et al. September 20, 2	2011-09-20
Monitoring System, Program-executing Device, Monitoring Program, Recording Medium And Integrated Circuit App 20110225653 - Maeda; Manabu ; et al.	2011-09-15
Group subordinate terminal, group managing terminal, server, key updating system, and key updating method therefor Grant 7,995,766 - Sato , et al. August 9, 2	2011-08-09
Device registration system and device registration apparatus Grant 7,984,489 - Matsuzaki , et al. July 19, 2	2011-07-19
Time authentication device, time authentication method, computer program, recording medium, integrated circuit, and time authentication system Grant 7,979,731 - Futa , et al. July 12, 2	2011-07-12
Group judgment device Grant 7,958,240 - Futa , et al. June 7, 2	2011-06-07
Content Reproduction Device, Content Reproduction Device Control Method, Content Reproduction Program, Recording Medium, And Integrated Circuit App 20110126284 - Haga; Tomoyuki ; et al.	2011-05-26
Group admission system and server and client therefor Grant 7,949,703 - Matsuzaki , et al. May 24, 2	2011-05-24
Unauthorized Contents Detection System App 20110119493 - NONAKA; Masao ; et al.	2011-05-19
Information security device and elliptic curve operating device Grant 7,940,927 - Futa , et al. May 10, 2	2011-05-10
Information transfer system, encryption device, and decryption device Grant 7,936,874 - Futa , et al. May 3, 2	2011-05-03
Measurement Device And Method Of Controlling The Same App 20110093210 - Matsuzaki; Natsume ; et al.	2011-04-21
Parameter generation apparatus, encryption system, decryption system, encryption apparatus, decryption apparatus, encryption method, decryption method, and program thereof Grant 7,929,688 - Yamamichi , et al. April 19, 2	2011-04-19
Group judgment device Grant 7,925,697 - Futa , et al. April 12, 2	2011-04-12
Key Migration Device App 20110081017 - Matsushima; Hideki ; et al.	2011-04-07
Signature generation device and signature verification device Grant 7,917,764 - Futa , et al. March 29, 2	2011-03-29
Digital camera system with means for restricting image acquisition Grant 7,898,570 - Yokota , et al. March 1, 2	2011-03-01
Unauthorized contents detection system Grant 7,900,062 - Nonaka , et al. March 1, 2	2011-03-01
Encryption Device And Encryption System App 20110033046 - Nonaka; Masao ; et al.	2011-02-10
Content-log analyzing system and data-communication controlling device Grant 7,886,365 - Futa , et al. February 8, 2	2011-02-08
Data Encryption Device App 20110022851 - Yokota; Kaoru ; et al.	2011-01-27
Signature And Verification Method, Signature Generation Device, And Signature Verification Device App 20110016325 - Futa; Yuichi ; et al.	2011-01-20
Information Security Device And Information Security System App 20100332820 - Matsushima; Hideki ; et al.	2010-12-30
Content distribution server, key assignment method, content output apparatus, and key issuing center Grant 7,860,255 - Nonaka , et al. December 28, 2	2010-12-28
Information Security Device And Information Security System App 20100268936 - Matsushima; Hideki ; et al.	2010-10-21
Encrypted communication system and communication device Grant 7,813,512 - Futa , et al. October 12, 2	2010-10-12
Shared Information Distributing Device, Holding Device, Certificate Authority Device, And System App 20100235588 - Maeda; Manabu ; et al.	2010-09-16
Data Processing Device, Data Processing Method, Data Processing Program, Recording Medium, And Integrated Circuit App 20100229168 - Maeda; Manabu ; et al.	2010-09-09
Signature generation device and signature verification device Grant 7,792,286 - Futa , et al. September 7, 2	2010-09-07
Encryption system, encryption device, decryption device, program, and integrated circuit Grant 7,773,746 - Futa , et al. August 10, 2	2010-08-10
Health care system, key management server and method for managing key, and encrypting device and method for encrypting vital sign data Grant 7,774,852 - Yokota , et al. August 10, 2	2010-08-10
Program Converter, Encrypting Device, And Encrypting Method App 20100195822 - Yokota; Kaoru ; et al.	2010-08-05
Software Update System, Management Apparatus, Recording Medium, And Integrated Circuit App 20100185859 - Unagami; Yuji ; et al.	2010-07-22
Software Updating Apparatus, Software Updating System, Alteration Verification Method And Alteration Verification Program App 20100180343 - Maeda; Manabu ; et al.	2010-07-15
Information Security Device App 20100177886 - Futa; Yuichi ; et al.	2010-07-15
Software Updating Apparatus, Software Updating System, Invalidation Method, And Invalidation Program App 20100175061 - Maeda; Manabu ; et al.	2010-07-08
Program Execution Apparatus, Control Method, Control Program, And Integrated Circuit App 20100174919 - ITO; Takayuki ; et al.	2010-07-08
Unauthorized contents detection system Grant 7,743,261 - Nonaka , et al. June 22, 2	2010-06-22
Signature generation apparatus and signature verification apparatus Grant 7,739,504 - Futa , et al. June 15, 2	2010-06-15
Program converter, encrypting device, and encrypting method Grant 7,724,897 - Yokota , et al. May 25, 2	2010-05-25
Prime calculating apparatus, key issuing system, and prime calculation method Grant 7,706,528 - Futa , et al. April 27, 2	2010-04-27
Content recording/reproducing system, distribution device, reproducing device, and recording device Grant 7,702,109 - Futa , et al. April 20, 2	2010-04-20
Signature generation device, key generation device, and signature generation method Grant 7,664,260 - Futa , et al. February 16, 2	2010-02-16
Information Security Apparatus App 20100031065 - Futa; Yuichi ; et al.	2010-02-04
Group Subordinate Terminal, Group Managing Terminal, Server, Key Updating System, And Key Updating Method Therefor App 20100014677 - Sato; Taichi ; et al.	2010-01-21
Utilization Apparatus, Servicer Apparatus, Service Utilization System, Service Utilization Method, Service Utilization Program, And Integrated Circuit App 20090316909 - Futa; Yuichi ; et al.	2009-12-24
Memory Control Apparatus, Content Playback Apparatus, Control Method And Recording Medium App 20090313425 - FUTA; Yuichi ; et al.	2009-12-17
Prime calculation device, method, and key issuing system Grant 7,634,084 - Futa , et al. December 15, 2	2009-12-15
Unauthorized device detection device, unauthorized device detection system, unauthorized device detection method, program, recording medium, and device information update method Grant 7,617,536 - Nonaka , et al. November 10, 2	2009-11-10
Authenticator Apparatus App 20090271860 - Nonaka; Masao ; et al.	2009-10-29
Encryption communication system Grant 7,603,554 - Futa , et al. October 13, 2	2009-10-13
Key distribution system App 20090238368 - Nonaka; Masao ; et al.	2009-09-24
Signature generation apparatus and signature verification apparatus App 20090235078 - Futa; Yuichi ; et al.	2009-09-17
System For Making Program Difficult To Read, Device For Making Program Difficult To Read, And Method For Making Program Difficult To Read App 20090228717 - Futa; Yuichi ; et al.	2009-09-10
Program conversion device, and secret keeping program App 20090217008 - Sato; Taichi ; et al.	2009-08-27
Unauthorized contents detection system Grant 7,549,061 - Nonaka , et al. June 16, 2	2009-06-16
Telemedical System App 20090103735 - AIZU; Kazuhiro ; et al.	2009-04-23
Communication Device And Communication System App 20090100264 - Futa; Yuichi ; et al.	2009-04-16
Management-apparatus Card, Measuring Apparatus, Health Care System, And Method For Communicating Vital Sign Data App 20090097641 - Matsuzaki; Natsume ; et al.	2009-04-16
Health Care System, Key Management Server And Method For Managing Key, And Encrypting Device And Method For Encrypting Vital Sign Data App 20090099967 - Yokota; Kaoru ; et al.	2009-04-16
Signature Generating Device, Signature Generating Method And Signature Generating Program App 20090094464 - Futa; Yuichi ; et al.	2009-04-09
Program illegiblizing device and method App 20090083521 - Sato; Taichi ; et al.	2009-03-26
Information security device and elliptic curve operating device App 20090074179 - Futa; Yuichi ; et al.	2009-03-19
Group Judgment Device App 20090070483 - FUTA; Yuichi ; et al.	2009-03-12
Program Converter, Encrypting Device, And Encrypting Method App 20090060176 - Yokota; Kaoru ; et al.	2009-03-05
Method And Device For Speeding Up Key Use In Key Management Software With Tree Structure App 20090046862 - ITO; Takayuki ; et al.	2009-02-19
Device and method for calculation on elliptic curve Grant 7,486,789 - Futa , et al. February 3, 2	2009-02-03
Key agreement system, shared-key generation apparatus, and shared-key recovery apparatus Grant 7,471,792 - Yamamichi, legal representative , et al. Decembe	2008-12-30
Transmission/reception system Grant 7,457,410 - Yamauchi , et al. November 25, 2	2008-11-25
Signature Generation Apparatus and Signature Verification Apparatus App 20080282089 - Futa; Yuichi ; et al.	2008-11-13
Group Formation/management System, Group Management Device, And Member Device App 20080275991 - Matsuzaki; Natsume ; et al.	2008-11-06
Group formation/management system, group management device, and member device Grant 7,441,117 - Matsuzaki , et al. October 21, 2	2008-10-21
Computer system, computer program, and addition method Grant 7,434,898 - Futa , et al. October 14, 2	2008-10-14
Rental system Grant 7,426,494 - Ohmori , et al. September 16, 2	2008-09-16
Signature Generation Device and Signature Verification Device App 20080222418 - Futa; Yuichi ; et al.	2008-09-11
Device Registration System and Device Registration Apparatus App 20080196109 - Matsuzaki; Natsume ; et al.	2008-08-14
Encryption apparatus, decryption apparatus and encryption system Grant 7,394,902 - Yamamichi , et al. July 1, 2	2008-07-01
Distribution system, distribution apparatus, and reception apparatus for distributing contents having usage expiry Grant 7,386,618 - Futa , et al. June 10, 2	2008-06-10
Time Authentication Device, Time Authentication Method, Computer Program, Recording Medium, Integrated Circuit, and Time Authentication System App 20080127279 - Futa; Yuichi ; et al.	2008-05-29
Signature Generation Device, Key Generation Device, and Signature Generation Method App 20080089514 - Futa; Yuichi ; et al.	2008-04-17
Content distribution system Grant 7,349,396 - Ohta , et al. March 25, 2	2008-03-25
Unauthorized contents detection system App 20080034442 - Nonaka; Masao ; et al.	2008-02-07
Unauthorized contents detection system App 20080034443 - Nonaka; Masao ; et al.	2008-02-07
Content Management System and Content Management Unit App 20080022416 - Yamauchi; Hiroki ; et al.	2008-01-24
Unauthorized Device Detection Device And Unauthorized Device Detection System App 20080016001 - Nakano; Toshihisa ; et al.	2008-01-17
Content distribution system App 20070282749 - Nonaka; Masao ; et al.	2007-12-06
Unauthorized Device Detection Device, Unauthorized Device Detection System, Unauthorized Device Detection Method, Program, Recording Medium, and Device Information Update Method App 20070283162 - Nonaka; Masao ; et al.	2007-12-06
Encryption System, Encryption Device, Decryption Device, Program, And Integrated Circuit App 20070274518 - Futa; Yuichi ; et al.	2007-11-29
Authentication system and key registration apparatus Grant 7,296,147 - Matsuzaki , et al. November 13, 2	2007-11-13
Content distribution system App 20070256141 - Nakano; Toshihisa ; et al.	2007-11-01
Digital information protection system, recording medium apparatus, transmission apparatus, and playback apparatus App 20070198859 - Harada; Shunji ; et al.	2007-08-23
Unauthorized Contents Detection System App 20070198838 - Nonaka; Masao ; et al.	2007-08-23
Computer system, computer program, and addition method App 20070192622 - Futa; Yuichi ; et al.	2007-08-16
Game system, game execution apparatus, and portable storage medium App 20070155487 - Nakano; Toshihisa ; et al.	2007-07-05
Game system App 20070155486 - Futa; Yuichi ; et al.	2007-07-05
Encrypted communication system and communication device App 20070150735 - Futa; Yuichi ; et al.	2007-06-28
Prime calculating apparatus, key issuing system, and prime calculation method App 20070143388 - Futa; Yuichi ; et al.	2007-06-21
Numerical array output device, a numerical array output method, an encryption device, and a decryption device Grant 7,233,662 - Futa , et al. June 19, 2	2007-06-19
Information transfer system, encryption device, and decryption device App 20070121933 - Futa; Yuichi ; et al.	2007-05-31
Prime calculation device,method,and key issuing system App 20070121934 - Futa; Yuichi ; et al.	2007-05-31
Content recording/reproducing system, distribution device, reproducing device, and recording device App 20070094505 - Futa; Yuichi ; et al.	2007-04-26
Elliptic curve converting device, elliptic curve converting method, elliptic curve utilization device and elliptic curve generating device Grant 7,209,555 - Futa , et al. April 24, 2	2007-04-24
Content distribution server, key assignment method, content output apparatus, and key issuing center App 20070033416 - Nonaka; Masao ; et al.	2007-02-08
Game system App 20070010328 - Yokota; Kaoru ; et al.	2007-01-11
Cryptocommunication system, transmission apparatus, and reception apparatus Grant 7,155,610 - Yamamichi , et al. December 26, 2	2006-12-26
Information security device, prime number generation device, and prime number generation method Grant 7,130,422 - Futa , et al. October 31, 2	2006-10-31
Apparatus for solving system of equations on finite field and apparatus for inverting element of extension field Grant 7,092,522 - Futa August 15, 2	2006-08-15
Encryption communication system App 20060171530 - Futa; Yuichi ; et al.	2006-08-03
Positional information storage system and method, semiconductor memory, and program Grant 7,023,362 - Futa , et al. April 4, 2	2006-04-04
RSA public key generation apparatus, RSA decryption apparatus, and RSA signature apparatus App 20050157872 - Ono, Takatoshi ; et al.	2005-07-21
Method and device for constructing elliptical curves Grant 6,910,058 - Futa , et al. June 21, 2	2005-06-21
Transmission/reception system App 20040250061 - Yamauchi, Hiroki ; et al.	2004-12-09
Digital work protection system, recording apparatus, reproduction apparatus, and recording medium App 20040243814 - Nakano, Toshihisa ; et al.	2004-12-02
Apparatus authentication system, server apparatus, and client apparatus App 20040230800 - Futa, Yuichi ; et al.	2004-11-18
Recording medium, recording apparatus and reproducing apparatus App 20040190389 - Nakano, Toshihisa ; et al.	2004-09-30
Recording apparatus and content protection system App 20040190868 - Nakano, Toshihisa ; et al.	2004-09-30
Content distribution system App 20040174824 - Ohta, Yuusaku ; et al.	2004-09-09
Key agreement system, shared-key generation apparatus, and shared-key recovery apparatus App 20040174997 - Yamamichi, Masato ; et al.	2004-09-09
Key agreement system, shared-key generation apparatus, and shared-key recovery apparatus App 20040165726 - Yamamichi, Masato ; et al.	2004-08-26
Group admission system and server and client therefor App 20040162870 - Matsuzaki, Natsume ; et al.	2004-08-19
Password recovery system App 20040133812 - Ohmori, Motoji ; et al.	2004-07-08
Service execution module App 20040117618 - Kawaguchi, Kyoko ; et al.	2004-06-17
Group judgment device App 20040107252 - Futa, Yuichi ; et al.	2004-06-03
Method and device for constructing elliptical curves App 20040098436 - Futa, Yuichi ; et al.	2004-05-20
Group formation/management system, group management device, and member device App 20040093523 - Matsuzaki, Natsume ; et al.	2004-05-13
Encryption apparatus, decryption apparatus and encryption system App 20040071293 - Yamamichi, Masato ; et al.	2004-04-15
Authentication system and key registration apparatus App 20040010688 - Matsuzaki, Natsume ; et al.	2004-01-15
Content distributing system and data-communication controlling device App 20040010687 - Futa, Yuichi ; et al.	2004-01-15
Distribution system, distribution apparatus, and reception apparatus for distributing contents having usage expiry App 20040003291 - Futa, Yuichi ; et al.	2004-01-01
Content-log analyzing system and data-communication controlling device App 20030228015 - Futa, Yuichi ; et al.	2003-12-11
Positional information storage system and method , semiconductor memory, and program App 20030222797 - Futa, Yuichi ; et al.	2003-12-04
Method and device for constructing elliptic curves Grant 6,611,597 - Futa , et al. August 26, 2	2003-08-26
Device and method for calculation on elliptic curve App 20030142820 - Futa, Yuichi ; et al.	2003-07-31
Key management apparatus App 20030081786 - Nakano, Toshihisa ; et al.	2003-05-01
Elliptic curve converting device, elliptic curve converting method, elliptic curve utilization device and elliptic curve generating device App 20030081771 - Futa, Yuichi ; et al.	2003-05-01
Numerical array output device, a numerical array output method, an encryption device, and a decryption device App 20030081770 - Futa, Yuichi ; et al.	2003-05-01
Digital work protection system, recording medium apparatus, transmission apparatus, and playback apparatus App 20030009681 - Harada, Shunji ; et al.	2003-01-09
Rental system App 20020198844 - Ohmori, Motoji ; et al.	2002-12-26
Information security device, prime number generation device, and prime number generation method App 20020176573 - Futa, Yuichi ; et al.	2002-11-28
Cryptocommunication system, transmission apparatus, and reception apparatus App 20020116612 - Yamamichi, Masato ; et al.	2002-08-22