Issued Patents 2005
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6891662 | Optical amplifier and method for amplifying wavelength multiplexed transmission signal light | Yasushi Sugaya, Etsuko Hayashi, Terumi Chikama, Norifumi Shukunami | 2005-05-10 |