Issued Patents 2021
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11187670 | Method for decreasing baseline under high temperature of gas sensor | Ling Liu, Na Wei, Fucheng Zhang | 2021-11-30 |
| 11060009 | Filtrate reducer for temperature-resistant calcium-resistant water-based drilling fluid used in oil and gas reservoir protection, drilling fluid, and uses thereof | Yuping Yang, Jingping Liu, Ying Wang, Long Li, Yushuang Liu +3 more | 2021-07-13 |
| 11053424 | Temperature-resistant calcium-resistant water-based drilling fluid for oil and gas reservoir protection and use thereof | Yuping Yang, Jingping Liu, Min Chang, Long Li, Jinhong Wang +1 more | 2021-07-06 |
| 10908115 | Method of forming electrochemical gas sensor | Ling Liu, Qian ZHENG | 2021-02-02 |