Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6618417 | Ridge waveguide semiconductor laser diode | Michio Ohkubo, Yoshikazu Ikegami, Akihiko Kasukawa | 2003-09-09 |
| 6560260 | Ridge waveguide semiconductor laser diode | Michio Ohkubo, Yoshikazu Ikegami, Akihiko Kasukawa | 2003-05-06 |