Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8062511 | Primary froth recycle | JONATHAN SPENCE, KAMAL HAMMAD, Samson Ng, Robert Siy, Jason Schaan | 2011-11-22 |
| 4776949 | Recycle of secondary froth in the hot water process for extracting bitumen from tar sand | Antony H. S. Leung | 1988-10-11 |