Issued Patents 2023
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11786880 | Preparation method of the microcapsules for low-temperature well cementation to be used to control cement hydration heat | Chunmei Zhang, Jingxuan Cai, Jia Wang, Xiaowei Cheng, Ping Wang +7 more | 2023-10-17 |
| 11603488 | Process for preparing metal-chelate retarder by sol-gel method | Xiaowei Cheng, Shuxun Zhao, Yang Yu, Zhihui Lin, Gaoyin Zhang +10 more | 2023-03-14 |