Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8163675 | Emulsifier based on polyamines and fatty acid/maleic anhydride | Reinaldo C. Navarrete, Hua Yu, Mohammad A. Rahman | 2012-04-24 |
| 7318477 | Method and composition for cleaning a well bore prior to cementing | — | 2008-01-15 |
| 6828281 | Surfactant blends for aqueous solutions useful for improving oil recovery | Dave Feuerbacher | 2004-12-07 |
| 6211139 | Polyester polyquaternary compounds, compositions containing them, and use thereof | Robert O. Keys, Floyd E. Friedli, Damon M. Dalrymple, Monna Manning, Craig Poffenberger +1 more | 2001-04-03 |