Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9004265 | Methods for restricting backflow of solids in a pump assembly | Derek Leslie Aldred | 2015-04-14 |
| 8579103 | System and method for transporting solid feed in a solid feed pump | John Saunders Stevenson, Derek Leslie Aldred | 2013-11-12 |
| 8006827 | Transporting particulate material | Derek Leslie Aldred, Timothy Saunders | 2011-08-30 |