Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5046560 | Oil recovery process using arkyl aryl polyalkoxyol sulfonate surfactants as mobility control agents | Gary F. Teletzke | 1991-09-10 |
| 4828032 | Oil recovery process using alkyl hydroxyaromatic dianionic surfactants as mobility control agents | Gary F. Teletzke, Thomas L. Ashcraft | 1989-05-09 |
| 4452708 | Oil recovery method using sulfonate surfactants derived from extracted aromatic feedstocks | Haven S. Aldrich, Thomas L. Ashcraft, Maura C. Puerto | 1984-06-05 |
| 4337159 | Shear-stabilized emulsion flooding process | Clarence W. Carpenter | 1982-06-29 |
| 4293428 | Propoxylated ethoxylated surfactants and method of recovering oil therewith | Walter W. Gale, Maura C. Puerto, Thomas L. Ashcraft, Rhoderick K. Saunders | 1981-10-06 |
| 4240504 | Simultaneous microemulsion-aqueous phase flooding process | — | 1980-12-23 |