Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6934479 | Wavelength division multiplexing optical communication system and wavelength division multiplexing optical communication method | Takeshi Sakamoto, Futoshi Izumi | 2005-08-23 |
| 6909535 | Optical communication system employing raman amplification | — | 2005-06-21 |