Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6819688 | Semiconductor laser device and optical fiber amplifier | Kiyohide Sakai, Yuuhiko Hamada, Takeshi Fujita, Kimio Shigihara, Tatsuo Hatta | 2004-11-16 |
| 6765944 | Semiconductor laser device | Tetsuya Yagi | 2004-07-20 |
| 6697406 | Semiconductor device and photonic semiconductor device applying the semiconductor device | Shin'ichi Yamamura, Kazushige Kawasaki | 2004-02-24 |