Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11391120 | Robustness of flapper valve open/close | Xiaoguang Allan Zhong, David Allen Dockweiler | 2022-07-19 |
| 11377934 | Downhole tool with compliant metal-to-metal seal | Xiaoguang Allan Zhong | 2022-07-05 |