Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4922047 | Process for production of traction fluids from bicyclic and monocyclic terpenes with zeolite catalyst | Thomas R. Forbus, Jr. | 1990-05-01 |
| 4716135 | Organophosphorus-modified zeolites and method of preparation | — | 1987-12-29 |
| 4658079 | Production of lubricant range hydrocarbons from light olefins | — | 1987-04-14 |
| 4577000 | Chemically stable stiff backbone polymers as mobility control agents in oil recovery | Albert L. Williams | 1986-03-18 |
| 4479894 | Oil recovery by surfactant-alcohol waterflooding | Yuhshi Luh | 1984-10-30 |
| 4468335 | Branched alkylpolyethoxypropane sulfonates and their use in enhanced oil recovery | Albert L. Williams | 1984-08-28 |
| 4468342 | Blends of surfactant homologues adjusted to salinity during waterflooding | — | 1984-08-28 |
| 4451623 | Water soluble phenolic-formaldehyde polymer which is a surfactant mobility control agent in oil recovery | — | 1984-05-29 |
| 4374740 | Water soluble surfactant mobility control agent in oil recovery | — | 1983-02-22 |
| 4370243 | Oil recovery by surfactant-alcohol waterflooding | Yuhshi Luh | 1983-01-25 |
| 4317893 | Oil recovery by waterflooding employing an anionic polymeric surfactant containing recurring succinimide or succinamide groups | Edward W. Sheppard | 1982-03-02 |
| 4303411 | Fluorine-containing tracers for subterranean petroleum and mineral containing formations | Yuhshi Luh, Kirk D. Schmitt | 1981-12-01 |
| 4284517 | Oil recovery by waterflooding employing anionic polymeric surfactants | Edward W. Sheppard | 1981-08-18 |
| 4267123 | Method of preparing propane sulfonates | Kirk D. Schmitt, Albert L. Williams | 1981-05-12 |
| 4222881 | Oil recovery process involving the injection of thickened water | Don E. Byham, Edward W. Sheppard | 1980-09-16 |