Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11692846 | Map presentation device | Shinya OOTSUJI, Akihiko Sato, Mitoshi Yajima | 2023-07-04 |
| 7209472 | Method of controlling change-over of connection route between media gateway apparatuses, and call agent apparatus | Masami Ohta | 2007-04-24 |
| 6961331 | IP gateway apparatus | Hiromitsu Kajiyama, Masahiko Nagafuji, Kenji Yamada | 2005-11-01 |
| 6674763 | Method and system of seizing communication channel enhancing usability of remaining communication channels | Kazuhiro Muraoka, Junji Tagane, Norihito Nishimoto | 2004-01-06 |
| 6665394 | Network call control system | Norihito Nishimoto, Kazuhiro Muraoka, Akio Yonehara | 2003-12-16 |