Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7796741 | Call connection control unit and call connection control method | Tatsuya Yoshida, Shinji Saitou | 2010-09-14 |
| 7577135 | IP telephone system | Hiroyuki Sato, Shinji Saitou, Tadashi Saitou, Takahiro Sasaki, Hiroshi Endo +5 more | 2009-08-18 |