Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12197003 | Optical filter and wavelength tunable laser element | Naoki Fujiwara, Kunimasa Saitoh, Takeshi Fujisawa, Takanori Sato | 2025-01-14 |
| 12158609 | Semiconductor optical device and method for manufacturing the same | — | 2024-12-03 |
| 11777274 | Semiconductor optical device and method for manufacturing the same | Hideki Yagi, Naoki Fujiwara | 2023-10-03 |
| 11735888 | Semiconductor optical device and method for producing semiconductor optical device | Naoki Fujiwara, Hideki Yagi, Takehiko Kikuchi, Toshiyuki Nitta | 2023-08-22 |
| 11527866 | Semiconductor optical device | Naoki Fujiwara, Hideki Yagi, Hajime Shoji, Takehiko Kikuchi, Toshiyuki Nitta | 2022-12-13 |
| 11393945 | Optical semiconductor device and method for manufacturing optical semiconductor device | Hideki Yagi, Naoko Konishi | 2022-07-19 |
| 10969543 | Semiconductor integrated optical device, and method of fabricating semiconductor integrated optical device | — | 2021-04-06 |
| 10725241 | Asymmetrical spot-size converter and method of manufacturing spot-size converter | Naoya KONO, Masataka Watanabe | 2020-07-28 |