Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5912877 | Data exchange, data terminal accommodated in the same, data communication system and data communication method | Nobuo Shirai, Yukio Sone | 1999-06-15 |
| 5848058 | Frame relay switching node | Akitsugu Ooyoshi, Yukio Sone | 1998-12-08 |