Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9719005 | Associated copolymer and preparation method thereof, and drilling fluid | Chao-Yie Yang, Zhizhi Zhang, Xiaolei Sun, Jiao Lu, Quanjie Liu | 2017-08-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9719005 | Associated copolymer and preparation method thereof, and drilling fluid | Chao-Yie Yang, Zhizhi Zhang, Xiaolei Sun, Jiao Lu, Quanjie Liu | 2017-08-01 |