Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5609751 | Para-xylene selective reforming/aromatization | — | 1997-03-11 |
| 5052487 | Sequential injection foam process for enhanced oil recovery | — | 1991-10-01 |
| 5005644 | Steam enhanced oil recovery method using branched alkyl aromatic sulfonates | Francois Friedmann, Steven P. Current | 1991-04-09 |
| 4607700 | Alpha-olefin sulfonate dimer surfactant cyclic steam stimulation process for recovering hydrocarbons from a subterranean formation | John H. Duerksen, Jack D. Knight | 1986-08-26 |
| 4576232 | Non-condensible gas injection including alpha-olefin sulfonate dimer surfactant additives and a process of stimulating hydrocarbon recovery from a subterranean formation | John H. Duerksen, Jack D. Knight | 1986-03-18 |
| 4572294 | Non-condensible gas injection including alpha-olefin sulfonate surfactant additives | John H. Duerksen, Jack D. Knight | 1986-02-25 |
| 4556107 | Steam injection including alpha-olephin sulfonate dimer surfactant additives and a process of stimulating hydrocarbon recovery from a subterranean formation | John H. Duerksen, Jack D. Knight | 1985-12-03 |
| 4254289 | Process for the production of alkene-1,5-diols | Shigeto Suzuki, John B. Wilkes | 1981-03-03 |