Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11204467 | Integrated grating coupler | Keisuke Kojima, Toshiaki Koike-Akino, Mohammad Tahersima | 2021-12-21 |
| 11050215 | Variable wavelength laser device and variable wavelength laser device production method | — | 2021-06-29 |
| 10962717 | Integrated grating coupler system | Keisuke Kojima, Toshiaki Koike-Akino, Muhammad Tahersima | 2021-03-30 |
| 10921525 | Grating coupler and integrated grating coupler system | Keisuke Kojima, Toshiaki Koike-Akino, Mohammad Tahersima | 2021-02-16 |
| 10838282 | Optical ring circuit with electrical filter | Keisuke Kojima, Min Teng, Toshiaki Koike-Akino, Chungwei Lin, Kieran Parsons +1 more | 2020-11-17 |
| 9762029 | Semiconductor laser and optical integrated light source including the same | Masakazu Takabayashi | 2017-09-12 |
| 9601906 | Wavelength-tunable light source and wavelength-tunable light source module | Masakazu Takabayashi, Yuichiro Horiguchi, Eitaro Ishimura | 2017-03-21 |
| 9184568 | Wavelength variable light source and wavelength variable light source module | Masakazu Takabayashi, Eitaro Ishimura | 2015-11-10 |
| 6836489 | Method of and apparatus for controlling wavelength variable semiconductor laser without preparing a high-precision current table | Tetsuya Nishimura, Yoshihito Hirano, Masao Imaki | 2004-12-28 |
| 6690688 | Variable wavelength semiconductor laser and optical module | — | 2004-02-10 |
| 6643309 | Semiconductor laser device | — | 2003-11-04 |