Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10434182 | Eight-arm polyethylene glycol derivative, production method therefor, and modified bio-related substance thereof | Wengui WENG, Chao Liu, Ce Yan, Huihuang Su | 2019-10-08 |
| 10280357 | High density and high temperature emulsifier for use in an oil based drilling fluid system | Fuchen Liu, Zhenzhou Yang | 2019-05-07 |