Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10928282 | Method and device for determining elasticity of cement stone utilized in well cementing of oil-gas well | Youzhi Zheng, Bo Kong, Jie Li, Huiyun Ma, Yu SANG +15 more | 2021-02-23 |
| 10911434 | Phone number protection system | Hui Wang, Mai Zeng, Yu Mei Dai, Xin LV, Si Jun Gz Zhou +2 more | 2021-02-02 |
| 10893039 | Phone number protection system | Hui Wang, Mai Zeng, Yu Mei Dai, Xin LV, Si Jun Gz Zhou +2 more | 2021-01-12 |