Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6007702 | Process for removing water from heavy crude oil | — | 1999-12-28 |
| 5141536 | Glycol dehydration apparatus for natural gas | Thomas J. Piglia, Sr. | 1992-08-25 |
| 5033547 | Method for decreasing mobility of dense carbon dioxide in subterranean formations | — | 1991-07-23 |
| 4793419 | Adding lignosulfonate to caustic floods to shift optimal salinity to a higher salinity | Gabriel Prukop | 1988-12-27 |
| 4637466 | Method of improving conformance in steam floods with carboxylate steam foaming agents | Jeffrey T. Hawkins | 1987-01-20 |
| 4540050 | Method of improving conformance in steam floods with steam foaming agents | Wann-Sheng Huang, Zean Z. Gassmann, Jeffrey T. Hawkins, Wilbur L. Hall | 1985-09-10 |
| 4518038 | Method of extracting and reutilizing surfactants from emulsions using sulfonated alkyl benzenes and ethoxylated phenols | Jim Maddox, Jr. | 1985-05-21 |
| 4464268 | Method for restoring permeability of injection wells | — | 1984-08-07 |
| 4460481 | Surfactant waterflooding enhanced oil recovery process | — | 1984-07-17 |
| 4438002 | Surfactant flooding solution | Paul Zabczuk | 1984-03-20 |
| 4318816 | Surfactant waterflooding enhanced oil recovery method using stabilized surfactant solution | — | 1982-03-09 |
| 4307782 | Surfactant waterflooding oil recovery method | — | 1981-12-29 |
| 4237018 | Surfactant flooding oil recovery process | — | 1980-12-02 |
| 4217957 | Oil recovery method | — | 1980-08-19 |
| 4194563 | High conformance enhanced oil recovery process | — | 1980-03-25 |
| 4194564 | Oil recovery method | — | 1980-03-25 |
| 4192382 | High conformance enhanced oil recovery process | — | 1980-03-11 |
| 4187073 | Surfactant flooding oil recovery process | — | 1980-02-05 |
| 4184549 | High conformance oil recovery process | — | 1980-01-22 |