Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6493369 | Gain-coupling distributed feedback type semiconductor laser device | Masaki Funabashi | 2002-12-10 |
| 6472691 | Distributed feedback semiconductor laser device | Toshikazu Mukaihara, Hitoshi Shimizu, Masaki Funabashi | 2002-10-29 |
| 6396861 | N-type modulation-doped multi quantum well semiconductor laser device | Hitoshi Shimizu, Kouji Kumada | 2002-05-28 |