Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6819688 | Semiconductor laser device and optical fiber amplifier | Kiyohide Sakai, Yuuhiko Hamada, Takeshi Fujita, Yasuaki Yoshida, Tatsuo Hatta | 2004-11-16 |
| 6804282 | Semiconductor laser device | Kazushige Kawasaki | 2004-10-12 |