Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812839 | System for controlling network activation sequence | Takashi Nara, Takashi Hatano, Yutaka Kawato, Ryoji Shimozono, Kenji Tsutsumi +2 more | 1989-03-14 |
| 4754273 | System for controlling network activation sequence | Takashi Nara, Takashi Hatano, Yutaka Kawato, Ryoji Shimozono, Kenji Tsutsumi +2 more | 1988-06-28 |
| 4698801 | Digital exchange system | Takashi Hatano, Takashi Nara, Yutaka Kawato | 1987-10-06 |