Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6573116 | Ridge type semiconductor laser of laterally-coupled distributed feedback and method of manufacturing the same | Yoshiaki Watanabe, Kiyoshi Takei, Kiyofumi Chikuma | 2003-06-03 |
| 6537841 | Ridge-structure DFB semiconductor laser and method of manufacturing the same | Kiyoshi Takei, Yoshiaki Watanabe, Kiyofumi Chikuma | 2003-03-25 |
| 6535670 | Optical transmitter/receiver module and method of manufacturing the same | Kiyoshi Takei, Yoshiaki Watanabe, Kiyofumi Chikuma | 2003-03-18 |
| 6504632 | Optical transmitter and receiver module which demultiplexes a superimposed optical signal | Yoshiaki Watanabe, Kiyoshi Takei, Kiyofumi Chikuma | 2003-01-07 |