Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4667740 | Surfactant flooding system | — | 1987-05-26 |
| 4518038 | Method of extracting and reutilizing surfactants from emulsions using sulfonated alkyl benzenes and ethoxylated phenols | Vernon H. Schievelbein | 1985-05-21 |
| 4516635 | Method of extracting and reutilizing surfactants from emulsions with sulfonated alkyl benzenes and alcohols | — | 1985-05-14 |
| 4513820 | Method of extracting and reutilizing surfactants from emulsions | — | 1985-04-30 |
| 4270607 | Emulsion oil recovery process usable in high temperature, high salinity formations | Ricardo L. Cardenas, Bobby G. Harnsberger | 1981-06-02 |
| 4269271 | Emulsion oil recovery process usable in high temperature, high salinity formations | Russell D. Shupe | 1981-05-26 |