Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6819688 | Semiconductor laser device and optical fiber amplifier | Yuuhiko Hamada, Takeshi Fujita, Yasuaki Yoshida, Kimio Shigihara, Tatsuo Hatta | 2004-11-16 |
| D494147 | Optical module | Shinichi Takagi, Hiroshi Aruga | 2004-08-10 |