Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843118 | Acidized fracturing fluids containing high molecular weight poly(vinylamines) for enhanced oil recovery | Ta-Wang Lai | 1989-06-27 |
| 4828725 | Completion fluids containing high molecular weight poly(vinylamines) | Ta-Wang Lai | 1989-05-09 |
| 4804793 | Drilling mud compositions containing high molecular weight poly (vinylamines) | Ta-Wang Lai | 1989-02-14 |
| 4798871 | Compositions containing high molecular weight poly(vinylamines) for enhanced oil recovery | Ta-Wang Lai | 1989-01-17 |
| 4795770 | Cement composition for oil well drilling holes containing high molecular weight poly (vinylamines) | Ta-Wang Lai | 1989-01-03 |