Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6744546 | Multilevel light-intensity modulating circuit | Takuya Nakamura, Jun-ichi Kani, Mitsuhiro Teshima | 2004-06-01 |
| 6678087 | Optical amplifier and optical fiber communication system using the amplifier | Hiroji Masuda | 2004-01-13 |