Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7244698 | Viscoelastic surfactant composition having improved rheological properties and method of using for treating subterranean formations | Duane S. Treybig, Grahame N. Taylor | 2007-07-17 |
| 7238230 | Asphalt-based coating compositions and salt surfactants | James A. Krogh | 2007-07-03 |
| 7125825 | Amidoamine salt-based viscosifying agents and methods of use | — | 2006-10-24 |
| 7060661 | Acid thickeners and uses thereof | Randy E. Dobson, Raman Premachandran | 2006-06-13 |