Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6891661 | Optical amplifier with pump light source control for Raman amplification | Etsuko Hayashi, Yasushi Sugaya, Miki Onaka | 2005-05-10 |
| 6873455 | Optical amplification apparatus utilizing raman amplification and controlling method thereof | Yasushi Sugaya, Etsuko Hayashi | 2005-03-29 |
| 6847478 | Optical amplification apparatus using Raman amplification | Miki Onaka, Etsuko Hayashi, Yasushi Sugaya | 2005-01-25 |