Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5634520 | Enhanced oil recovery process including the simultaneous injection of a miscible gas and water | Chris Stevens, Steven D. McPherson, John R. Larson, Donnell R. Robie | 1997-06-03 |
| 5515919 | Enhanced oil recovery process including the simultaneous injection of a miscible gas and water | Chris Stevens, Steven D. McPherson, John R. Larson, Donnell R. Robie | 1996-05-14 |