Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6831767 | Traveling wave optical modular | Masataka Shirai, Shinji Tsuji, Hideo Arimoto | 2004-12-14 |
| 6678432 | Optical integrated device, semiconductor laser module and optical transmitter | Kimio Tatsuno, Masataka Shirai | 2004-01-13 |