Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6002690 | Time division multiplex transferring system capable of increasing transferring efficiency and preventing interruption of communication | Shigeyuki Takayama | 1999-12-14 |
| 5450401 | Time slot switching device with a single data memory | Noboru Tatsuki | 1995-09-12 |
| 5349578 | Time slot switching function diagnostic system | Noboru Tatsuki | 1994-09-20 |