Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8804241 | Methods for forming optical films | Qihong Wu, Kelvin Xu Zhang | 2014-08-12 |
| 8506827 | Short pitch metal gratings and methods for making the same | Qihong Wu, Sheng Liu, Xu Zhang, Xiaohua Du, Thomas Tombler | 2013-08-13 |
| 5865423 | High flow diaphragm valve | Patrick P. Barber | 1999-02-02 |