Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12104459 | Seal for repeatedly switchable stepless fracturing sliding sleeve | Guangming Huang, Houning Li | 2024-10-01 |
| 11112039 | Slip sealing structure | Houning Li, Guangming Huang | 2021-09-07 |