Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6618417 | Ridge waveguide semiconductor laser diode | Michio Ohkubo, Takeshi Namegaya, Akihiko Kasukawa | 2003-09-09 |
| 6560260 | Ridge waveguide semiconductor laser diode | Michio Ohkubo, Takeshi Namegaya, Akihiko Kasukawa | 2003-05-06 |
| 6522486 | Optical communication device and method of fixing optical module | Chihomi Furuhashi, Takeshi Aikiyo | 2003-02-18 |