Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6304635 | Call control management system | Tomokiyo Yoshimatsu, Kiyomi Akimoto | 2001-10-16 |
| 5621670 | Communication service simulator and a communication service specification verifying method | Jun Maeda, Akiko Hiramatsu | 1997-04-15 |
| 5295177 | Automatic terminal start/stop verification system using call processing simulator | Mitsuaki Kakemizu, Junichi Yamazaki, Yoshiharu Sato | 1994-03-15 |