Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12359735 | Spring stop for clapper valve | Edward Barry Knoles, Luis Fernando Prieto, Alan Long Thien Du, Pui Yuen Ng, Arturo Gomez | 2025-07-15 |
| 12292123 | Clapper with an upstream cam-arm and roller arrangement | Luis Fernando Prieto, Alan Long Thien Du, Pui Yuen Ng, Arturo Gomez | 2025-05-06 |
| 11976736 | Eccentric backflow preventer | Pui Yuen Ng, Luis Fernando Prieto, Alan Long Thien Du, Edward Barry Knoles | 2024-05-07 |