Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4825950 | Method of enhanced oil recovery using a stabilized polymer combination in chemical flood | Tevhide G. Arf | 1989-05-02 |
| 4811788 | Surfactant combinations and enhanced oil recovery method employing same | Yvonne Jeans | 1989-03-14 |