Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6658217 | Optical receiver | Kenichi Ohhata, Toru Masuda, Katsuyoshi Washio, Yasushi Hatta | 2003-12-02 |
| 6619865 | Optical frequency division multiplexing network | Atsushi Takai, Akihiko Takase | 2003-09-16 |
| 6587260 | Band-expanding method for optical amplifiers and optical transmission apparatus | Nobuhiko Kikuchi | 2003-07-01 |