Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6377393 | Optical amplifier apparatus, optical transmission apparatus equipped with break point detecting function using optical amplifier apparatus, and bidirectional optical transmission apparatus | — | 2002-04-23 |
| 6310718 | Optical amplifying apparatus for detecting break point in optical transmission lines | — | 2001-10-30 |
| 6204959 | Signal light monitor and optical amplifier using the same | Masayuki Fujita | 2001-03-20 |
| 6008935 | Optical amplifier and optical amplifier gain control method and apparatus | Masayuki Fujita | 1999-12-28 |
| 5974212 | Optical line monitor and optical amplification apparatus using same | — | 1999-10-26 |
| 5896221 | Optical amplifying system having multiple branching units and method therefor | — | 1999-04-20 |