Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9923660 | Optical add-drop multiplexer and branching unit | — | 2018-03-20 |
| 9876574 | Optical repeater and optical fiber communications system | — | 2018-01-23 |
| 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 |
| 9276672 | Method, transport apparatus, and system for detecting submarine optical cable line | Liping Ma | 2016-03-01 |
| 8098425 | Fiber communication system, fiber amplifier, and method for fabricating fiber amplifier | Dongming Li, Hong Liu | 2012-01-17 |