Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6493369 | Gain-coupling distributed feedback type semiconductor laser device | Akihiko Kasukawa | 2002-12-10 |
| 6472691 | Distributed feedback semiconductor laser device | Toshikazu Mukaihara, Hitoshi Shimizu, Akihiko Kasukawa | 2002-10-29 |