Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11552451 | Semiconductor laser device | Takeshi Yamatoya, Shinya Okuda | 2023-01-10 |
| 11398713 | Electro-absorption modulator, optical semiconductor device and optical module | Shinya Okuda | 2022-07-26 |
| 9153942 | Method of manufacturing semiconductor device | Daisuke Tsunami, Hiroyuki Kawahara | 2015-10-06 |
| 7816160 | Manufacturing method for semiconductor device | Chikara Watatani | 2010-10-19 |
| 7550304 | Method for manufacturing semiconductor laser element | Chikara Watatani | 2009-06-23 |
| 7544535 | Method for manufacturing semiconductor laser element | Chikara Watatani, Toru Ota | 2009-06-09 |