Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6650625 | Ring network system | Akira Norizuki, Akiyoshi Tomita, Kazuyoshi Unno, Katsutoshi Nakajima, Hiroshi Nishiyama | 2003-11-18 |
| 6590863 | Operation mode changing-over method and multiplex transmission apparatus for realizing the same | Katsutoshi Nakajima, Akira Norizuki, Akiyoshi Tomita, Hiroshi Nishiyama, Kazuyoshi Unno | 2003-07-08 |
| 6504823 | Network monitoring system and method thereof | Katsutoshi Nakajima, Hiroshi Nishiyama, Kazuyoshi Unno, Akiyoshi Tomita, Akira Norizuki | 2003-01-07 |