Issued Patents All Time
Showing 25 most recent of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10803075 | System and method for searching a database or data sharing system for the presence of data | Yuji Watanabe | 2020-10-13 |
| 8713691 | Attribute information providing system | Yoshinobu Ishigaki, Madoka Yuriyama, Yuji Watanabe | 2014-04-29 |
| 8655696 | System for performing schedule management, schedule management method and program | Hiroyuki Akatsu, Atsushi Fukuda, Takashi Nerome | 2014-02-18 |
| 8618905 | Verifying the ownership of an owner's authority in terms of product and service | Yoshinobu Ishigaki, Yuji Watanabe | 2013-12-31 |
| 8538937 | Method for searching a database or data sharing system for the presence of data | Yuji Watanabe | 2013-09-17 |
| 8386780 | Cryptographic communication system, terminal device, server, and decryption method | Yuji Watanabe | 2013-02-26 |
| 8165913 | System, method, program for assigning virtual attribute to product, and system, method, and program for tracing cause of phenomenon occurring in product | Fumihiko Kitayama, Hirofumi Matsuzawa | 2012-04-24 |
| 8122511 | Attribute information providing method | Yoshinobu Ishigaki, Madoka Yuriyama, Yuji Watanabe | 2012-02-21 |
| 8117456 | Network system, server and information terminal for list matching | Yuji Watanabe | 2012-02-14 |
| 7979712 | Network system, server and information terminal for list matching | Yuji Watanabe | 2011-07-12 |
| 7917513 | Duplicating database contents | Yuji Watanabe, Takeo Yoshizawa | 2011-03-29 |
| 7913089 | Identification information creating apparatus, identification information resolving apparatus, information system utilizing the apparatuses, controlling method and program thereof | Yuji Watanabe, Yoshinori Aoki | 2011-03-22 |
| 7913093 | Method and system for providing access to information on an article to which a tag is coupled | Yoshinobu Ishigaki, Yuji Watanabe, Madoka Yuriyama, Takeo Yoshizawa | 2011-03-22 |
| 7836312 | Information acquisition enabled/disabled inspection system | Yoshinori Aoki, Keitaroh Dohmen, Yuji Watanabe, Madoka Yuriyama | 2010-11-16 |
| 7769706 | Method and system for obtaining a combination of faulty parts from a dispersed parts tree | Fumihiko Kitayama, Hirofumi Matsuzawa, Madoka Yuriyama | 2010-08-03 |
| 7752161 | Access management system, access administration apparatus, access administration program, access administration method, and recording medium | Yuji Watanave, Madoka Yuriyama, Keitaroh Dohmen | 2010-07-06 |
| 7657740 | Verifying the ownership of an owner's authority in terms of product and service | Yoshinobu Ishigaki, Yuji Watanabe | 2010-02-02 |
| 7567948 | Method and system for obtaining a combination of faulty parts from a dispersed parts tree | Fumihiko Kitayama, Hirofumi Matsuzawa, Madoka Yuriyama | 2009-07-28 |
| 7539315 | Encrypted communication system, key delivery server thereof, terminal device and key sharing method | Yuji Watanabe | 2009-05-26 |
| 7478244 | Access control method | Madoka Yuriyama, Yuji Watanabe | 2009-01-13 |
| 7346171 | Network system, terminal, and method for encryption and decryption | Yuji Watanabe | 2008-03-18 |
| 7331519 | Traceability signature system, signature method and program product | Yuji Watanabe, Takeo Yoshizawa, Madoka Yuriyama | 2008-02-19 |
| 6701435 | Cryptographic key generation system | Michiharu Kudo | 2004-03-02 |
| 6647388 | Access control system, access control method, storage medium and program transmission apparatus | Michiharu Kudoh, Tomio Amano | 2003-11-11 |
| 6512835 | Data hiding and extraction methods | Shuichi Shimizu, Norishige Morimoto, Mei Kobayashi | 2003-01-28 |