Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11175520 | Optical semiconductor device and method for manufacturing the same | Satoshi Nishikawa, Koichi Akiyama, Keigo Fukunaga, Yohei HOKAMA, Yosuke Suzuki | 2021-11-16 |
| 9989830 | Optical modulator element, optical modulation module including optical modulator element, and method for manufacturing optical modulator element | Satoshi Nishikawa, Koichi Akiyama, Shusaku Hayashi, Yohei HOKAMA, Kentaro ENOKI +1 more | 2018-06-05 |
| 9601906 | Wavelength-tunable light source and wavelength-tunable light source module | Masakazu Takabayashi, Mitsunobu Gotoda, Eitaro Ishimura | 2017-03-21 |
| 9369204 | System and method for measuring linewidth of optical signal | Keisuke Kojima, Toshiaki Koike-Akino | 2016-06-14 |