Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4620594 | Vertical conformance steam drive oil recovery method | — | 1986-11-04 |
| 4540050 | Method of improving conformance in steam floods with steam foaming agents | Wann-Sheng Huang, Zean Z. Gassmann, Jeffrey T. Hawkins, Vernon H. Schievelbein | 1985-09-10 |
| 4494605 | Sand control employing halogenated, oil soluble hydrocarbons | John F. Wiechel, Charles R. French | 1985-01-22 |
| 4465137 | Varying temperature oil recovery method | Alvin J. Sustek, Jr., Thomas S. Teasdale, John F. Wiechel | 1984-08-14 |
| 4425968 | Selective water exclusion | Alfred Brown | 1984-01-17 |
| 4324291 | Viscous oil recovery method | Kenny Wong | 1982-04-13 |
| 4212353 | Hydraulic mining technique for recovering bitumen from tar sand deposit | — | 1980-07-15 |
| 4207945 | Recovering petroleum from subterranean formations | Charles R. French, Ching H. Wu, Alfred Brown | 1980-06-17 |