Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10608775 | Optical transmission apparatus, optical transmission method, and optical transmission system | Norifumi Shukunami, Makoto Hasegawa, Tomohiro Yamauchi, Tomoyuki Kato | 2020-03-31 |
| 10542334 | Optical switch module and optical relay apparatus and path expansion method that use optical switch module | — | 2020-01-21 |