Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12272929 | Optical semiconductor device | Kouji Nakahara | 2025-04-08 |
| 11189991 | Semiconductor optical element and semiconductor optical device comprising the same | Kouji Nakahara | 2021-11-30 |