Issued Patents 2019
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10422719 | Chromatic dispersion estimating circuit, optical reception device and chromatic dispersion amount estimating method | Etsushi Yamazaki, Tomohiro Takamuku, Yuki Yoshida, Mitsuteru YOSHIDA, Koki Shibahara +1 more | 2019-09-24 |
| 10419127 | Phase compensation device, phase compensation method and communication apparatus | Etsushi Yamazaki, Hiroyukl Nouchi, Yasuharu Onuma, Tomohiro Takamuku, Katsuichi Oyama +4 more | 2019-09-17 |
| 10305675 | Data phase tracking device, data phase tracking method and communication device | Yasuharu Onuma, Masahiro Tachibana, Etsushi Yamazaki, Kazuhito Takei, Yuki Yoshida +2 more | 2019-05-28 |
| 10171173 | Optical signal transmission apparatus and optical signal transmission method | Seiji Okamoto, Koichi Ishihara, Etsushi Yamazaki, Mitsuteru YOSHIDA, Tomoyoshi Kataoka +3 more | 2019-01-01 |