Issued Patents 2019
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10494901 | Ball-dropping sliding sleeve with a removable ball seat | Shengpeng Zhang, Xiaojun Li, Feiyue Wang, Xin Zhang, Fuqiang Li | 2019-12-03 |
| 10477861 | Emanation system and method for use | Maude Christian Meier, Randy C. Yuhas | 2019-11-19 |
| 10406000 | Ankle-foot prosthesis device | Yan Liu, Wei-Hsin Liao | 2019-09-10 |
| 10204758 | Positive and negative ion source based on radio-frequency inductively coupled discharge | Younian Wang | 2019-02-12 |