Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8822387 | Composition and method for using waxy oil-external emulsions to modify reservoir permeability profiles | Joseph P. Lederhos, Sergio A. Leonardi, Scott E. Hommema, Amy L. Chen, Shan H. Yang | 2014-09-02 |
| 8146654 | Composition and method for using waxy oil-external emulsions to modify reservoir permeability profiles | Joseph P. Lederhos, Sergio A. Leonardi, Scott E. Hommema, Amy L. Chen, Shan H. Yang | 2012-04-03 |
| 8100178 | Method of oil recovery using a foamy oil-external emulsion | Robert D. Kaminsky, Sergio A. Leonardi | 2012-01-24 |
| 7186673 | Stability enhanced water-in-oil emulsion and method for using same | Ramesh Varadaraj, Dennis G. Peiffer, Chester W. Elspass | 2007-03-06 |
| 7121339 | Solids-stabilized oil-in-water emulsion and a method for preparing same | Ramesh Varadaraj | 2006-10-17 |
| 6988550 | Solids-stabilized oil-in-water emulsion and a method for preparing same | Ramesh Varadaraj | 2006-01-24 |
| 6734144 | Solids-stabilized water-in-oil emulsion and method for using same | Ramesh Varadaraj, Monte K. Dobson, Dennis G. Peiffer, John Huang, Donald B. Siano +2 more | 2004-05-11 |
| 6068054 | Oil recovery method using an emulsion | — | 2000-05-30 |
| 5927404 | Oil recovery method using an emulsion | — | 1999-07-27 |
| 5910467 | Solids-stabilized emulsion | — | 1999-06-08 |
| 5855243 | Oil recovery method using an emulsion | — | 1999-01-05 |
| 5490940 | Method for forming mineral solids-oil floccules | Shan H. Yang | 1996-02-13 |
| 4676315 | Method for concentrating surfactant from a brine solution | — | 1987-06-30 |
| 4589998 | Method for treating oil-water emulsions and recovering surfactants | Walter W. Gale | 1986-05-20 |
| 4493774 | Method for improving injectivities of biopolymer solutions | — | 1985-01-15 |