Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12422041 | Y-shaped packer | Meiqin Ma, Jianbang Sun, Xiaojuan Chen, Chengang Shi, Ting Yin +3 more | 2025-09-23 |
| 11634879 | Tower packer for packing cement slurry of jacket | Baoquan Liu, Meiqin Ma, Jiande Tian, Jianbang Sun, Chengang Shi +3 more | 2023-04-25 |
| 11159465 | Service apparatus and method for providing deferred message, and storage medium | Lin-Lin Pan, Jianguo Dang, Tongxing Ma, Kailiang Jiang | 2021-10-26 |
| 10389665 | Service apparatus and method for providing deferred message, and storage medium | Lin-Lin Pan, Jianguo Dang, Tongxing Ma, Kailiang Jiang | 2019-08-20 |