Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4981176 | Method for using foams to improve alkaline flooding oil recovery | — | 1991-01-01 |
| 4921576 | Method for improving sweep efficiency in CO.sub.2 oil recovery | — | 1990-05-01 |
| 4629000 | Oil recovery by surfactant-alcohol waterflooding | — | 1986-12-16 |
| 4463806 | Method for surfactant waterflooding in a high brine environment | — | 1984-08-07 |
| 4458760 | Oil recovery process for stratified high salinity reservoirs | — | 1984-07-10 |
| 4421168 | Surfactant waterflooding with graded salinity drive for oil recovery | — | 1983-12-20 |