Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8802468 | Semiconductor light emitting device and fabrication method for semiconductor light emitting device | Nobuaki Hatori, Tsuyoshi Yamamoto, Yasuhiko Arakawa | 2014-08-12 |
| 8716044 | Optical semiconductor device having ridge structure formed on active layer containing P-type region and its manufacture method | Tsuyoshi Yamamoto | 2014-05-06 |
| 8558245 | Optical semiconductor device having ridge structure formed on active layer containing p-type region and its manufacture method | Tsuyoshi Yamamoto | 2013-10-15 |
| 8483252 | Semiconductor light emitting device and fabrication method for semiconductor light emitting device | Nobuaki Hatori, Tsuyoshi Yamamoto, Yasuhiko Arakawa | 2013-07-09 |
| 8232125 | Optical semiconductor device having active layer of p-type quantum dot structure and its manufacture method | Nobuaki Hatori, Tsuyoshi Yamamoto, Yasuhiko Arakawa | 2012-07-31 |
| 7573060 | Optical semiconductor device having active layer of p-type quantum dot structure and its manufacture method | Nobuaki Hatori, Tsuyoshi Yamamoto, Yasuhiko Arakawa | 2009-08-11 |