Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6291256 | Method of manufacturing non-regrowth distributed feedback ridge semiconductor | Nong Chen, Yoshiaki Watanabe, Kiyofumi Chikuma | 2001-09-18 |
| 5982804 | Non-regrowth distributed feedback ridge semiconductor laser and method of manufacturing the same | Nong Chen, Yoshiaki Watanabe, Kiyofumi Chikuma | 1999-11-09 |