Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11371313 | Hard-sealing soluble bridge plug | Jiangping Li, Renjin Chen, Jianfeng Liu, Maoyong Zhou, Fuzeng Pang | 2022-06-28 |
| 10914132 | Large-diameter soluble bridge plug | Jiangping Li, Renjin Chen, Jianfeng Liu | 2021-02-09 |