Issued Patents 2019
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10415345 | Millable bridge plug system | Jianpeng Yue, Marvin Allen Gregory, Xiangtong Yang | 2019-09-17 |
| 10408014 | Well killing method and device for a fractured formation without safety pressure window by five-step bullheading | Baojiang Sun, Xueqing Teng, Yaoming Zhang, Zhiyuan Wang, Jianbo Zhang +1 more | 2019-09-10 |
| 10344445 | Prefabricated and flexible earthquake-resistant self-resetting structure associated with a subway station | Xiuli Du, Chengshun Xu, Zili Wang | 2019-07-09 |
| 10244326 | Miniature sounder | Zedong Zheng, Zhenhua Liu, Yueguang Zhu | 2019-03-26 |