Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5296957 | Optical repeater having loop-back function used in transmission system | Masaaki Takahashi, Takanori Maki, Kazuya Amaki, Mitsushi Nitta | 1994-03-22 |
| 5293260 | Optical repeater off-state supervisory method and device therefor | Mitsuo Kitamura | 1994-03-08 |
| 5130837 | Optical repeater haivng means for preventing malfunction due to the presence of noise | Mitsuo Kitamura | 1992-07-14 |