Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6853664 | Semiconductor laser element, semiconductor etchant, and method of fabricating the semiconductor laser element | Takeshi Shiojima, Michio Ohkubo | 2005-02-08 |
| 6847055 | Semiconductor devices, and methods of manufacture of the same | Michio Ohkubo | 2005-01-25 |
| 6549554 | Semiconductor laser element, semiconductor etchant, and method of fabricating the semiconductor laser element | Takeshi Shiojima, Michio Ohkubo | 2003-04-15 |
| 6335216 | Method for fabricating a semiconductor optical device having a ridge stripe | Junji Yoshida, Naoki Tsukiji | 2002-01-01 |