Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12031386 | Blade cover | Huimin Song, Youhe Zhang, Ting Ren | 2024-07-09 |
| 12006773 | Drilling tool having pre-fabricated components | Youhe Zhang, Mingdong Cai, Huimin Song, Ting Ren | 2024-06-11 |
| 10648266 | Downhole milling cutting structures | Zhenbi Su, Vijayakumar Palani, Jianbing Hu, Christopher Glass, Timothy A. Burdett | 2020-05-12 |
| 9926746 | Actuating a downhole tool | Rui Gao, James L. Larsen, Yaou Wang | 2018-03-27 |
| 8607861 | Metal-to-metal seal with retention device | James E. Saylor, III | 2013-12-17 |
| 8596345 | RCD sealing elements with multiple elastomer materials | Yanmei Li, Alan W. Lockstedt | 2013-12-03 |
| 8020638 | Seal with dynamic sealing surface at the outside diameter | Zhou Yong | 2011-09-20 |
| 7461708 | Elastomeric seal assembly having auxiliary annular seal components | Zhou Yong | 2008-12-09 |