Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5933426 | Interface apparatus of ATM/STM coexistence network system | — | 1999-08-03 |
| 5347417 | Power supply protection system applied to optical subscriber network | — | 1994-09-13 |
| 5272588 | Surge protector | — | 1993-12-21 |
| 5038364 | Transmission line monitoring system | — | 1991-08-06 |
| 4896317 | Supervisory system for a primary group digital transmission line | Noboru Nakama, Atsushi Suzuki, Eiji Sugawara, Naoyuki Kato | 1990-01-23 |