Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6214213 | Solvent process for bitumen seperation from oil sands froth | Yi LONG, William Edward Shelfantook | 2001-04-10 |
| 5876592 | Solvent process for bitumen separation from oil sands froth | Yi LONG | 1999-03-02 |
| 5236577 | Process for separation of hydrocarbon from tar sands froth | Bruce M. Sankey | 1993-08-17 |
| 5223148 | Process for increasing the bitumen content of oil sands froth | Varagur S. V. Rajan, Dean L. Wallace | 1993-06-29 |