Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8732316 | Communication system | Takuma Utsunomiya, Shota Nakamura, Eri Kawai | 2014-05-20 |
| 8086717 | Presence information management system and presence information management server | Tatsuhiko Miyata | 2011-12-27 |
| 7720952 | Presence information management system and presence information management server | Tatsuhiko Miyata | 2010-05-18 |
| 7716293 | Presence information sharing method and system | Tatsuhiko Miyata, Mitsuru Ikezawa, Kazuyoshi Hoshino | 2010-05-11 |
| 7668911 | Presence server, session control server, and packet relay system | Tatsuhiko Miyata, Kazuma Yumoto | 2010-02-23 |
| 7571207 | Push-type information delivery method, push-type information delivery system, information delivery apparatus and channel search apparatus based on presence service | Masahiro Yoshizawa | 2009-08-04 |
| 6858949 | Semiconductor memory device and method for arranging memory cells | — | 2005-02-22 |