Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6909549 | Tunable filter for optical add/drop module | Yung-Chieh Hsieh, Chiayu Ai, Hong Li | 2005-06-21 |
| 6816315 | Optical path length tuner | Chiayu Ai, Yung-Chieh Hsieh | 2004-11-09 |