Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7912371 | Optical transmission device, optical transmission method, and computer product | — | 2011-03-22 |
| 5220558 | Drop/insert multiplexer for data channel access units | Minoru Ishikawa | 1993-06-15 |
| 5020053 | Channel access system | Minoru Ishikawa | 1991-05-28 |