Issued Patents 2025
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12398624 | Self-energizing seal for expandable liner hanger | Xiaoguang Allan Zhong, Yian Zhao, Chee Sing Kelvin Loh | 2025-08-26 |
| 12215562 | Seal element with profiled surface for a downhole tool in a wellbore | Xiaoguang Allan Zhong, Michael Linley Fripp | 2025-02-04 |