Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4648452 | Method of increasing enhanced oil recovery by using a novel low sulfonate phase in the polymer slug | Gilbert L. Haferkamp | 1987-03-10 |
| 4635722 | Method of increasing enhanced oil recovery by using a higher sulfonate phase obtained on polymer addition | — | 1987-01-13 |
| 4304302 | Method for injecting a two phase fluid into a subterranean reservoir | Richard H. Widmyer, Robert G. Pindell | 1981-12-08 |
| 4232737 | Double tapered surfactant waterflood oil recovery process | Timothy N. Tyler | 1980-11-11 |
| 4214999 | Surfactant flooding oil recovery process | James W. Ware, Melvin E. Mills, Jr., Timothy N. Tyler | 1980-07-29 |
| 4213500 | Oil recovery process: injection of fatty alcohol followed by soap | Ricardo L. Cardenas | 1980-07-22 |