Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12352125 | Combined sealing member for coiled tubing blowout preventer box | Guangming Huang, Jialiang Wang | 2025-07-08 |
| 12104459 | Seal for repeatedly switchable stepless fracturing sliding sleeve | Zeming Qin, Guangming Huang | 2024-10-01 |
| 11112039 | Slip sealing structure | Zeming Qin, Guangming Huang | 2021-09-07 |