Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11512256 | Non-aqueous extraction of bitumen from oil sands | Iftikhar Huq, Ali Abbaspour, Brian Doucette, Billy James Rideout | 2022-11-29 |
| 7569137 | Process and apparatus for treating tailings | John Patrick Ringstrom, John Sharpe, Douglas Robert Bartlett, W. Scott Hindle, Chris L. Grant | 2009-08-04 |
| 4859317 | Purification process for bitumen froth | William Edward Shelfantook, Larry P. Hackman | 1989-08-22 |