Issued Patents 2017
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9768899 | Optical add/drop multiplexer branching unit | Likun Zhang, Keqiang Cui | 2017-09-19 |
| 9762348 | Reconfigurable optical add-drop multiplexer apparatus | Changwu Xu, Liping Ma | 2017-09-12 |
| 9705593 | Communications device and method | Changwu Xu | 2017-07-11 |