Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11428864 | Optical waveguide and optical device | — | 2022-08-30 |
| 9948059 | Semiconductor laser light source and fabrication method | Tsuyoshi Yamamoto, Kazumasa Takabayashi, Ayahito Uetake | 2018-04-17 |
| 9698570 | Optical semiconductor element and method of manufacturing the same | Kazumasa Takabayashi, Tsuyoshi Yamamoto | 2017-07-04 |
| 7407859 | Compound semiconductor device and its manufacture | Toshihide Kikkawa | 2008-08-05 |
| 7132699 | Compound semiconductor device and its manufacture | Toshihide Kikkawa | 2006-11-07 |