Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8757257 | Crown-shaped separation device for separating oil and water in well | Yan Wang, Demin Wang, Long Ren, Rong Zhong, Hongyan Wang | 2014-06-24 |
| 8453726 | Corrugated settling cup and a multi-cup uniform flux gas anchor | Demin Wang, Yan Wang, Jun Wan, Shumin Zhang, Li Li | 2013-06-04 |