Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6501574 | Optical multiplex transmission apparatus and optical multiplex transmission method | Kazuyoshi Unno, Akiyoshi Tomita, Hiroshi Nishiyama, Akira Norizuki, Katsutoshi Nakajima | 2002-12-31 |
| 6381714 | Error detection method, error detection apparatus, and network system | Akiyoshi Tomita, Kazuyoshi Unno, Hiroshi Nishiyama, Akira Norizuki, Katsutoshi Nakajima | 2002-04-30 |