Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6925103 | Gain-coupled DFB laser diode | Tsutomu Ishikawa, Norihiko Sekine, Hajime Shoij | 2005-08-02 |
| 6850550 | Complex coupling MQW semiconductor laser | Tsutomu Ishikawa, Hajime Shoji | 2005-02-01 |