Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6500687 | Distributed feedback semiconductor laser element and method for making the same | Kiyoshi Takei, Yoshiaki Watanabe, Kiyofumi Chikuma | 2002-12-31 |
| 6381258 | Ridge-structure DFB semiconductor laser and method of manufacturing the same | Kiyoshi Takei, Yoshiaki Watanabe, Kiyofumi Chikuma | 2002-04-30 |
| 6348360 | Method for producing semiconductor laser module | Kiyoshi Takei, Yoshiaki Watanabe, Kiyofumi Chikuma | 2002-02-19 |