Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867238 | Recovery of viscous oil from geological reservoirs using hydrogen peroxide | Jack H. Bayless | 1989-09-19 |
| 4840982 | Polymer blends containing ionomeric elastomers | John R. Campbell, Sterling B. Brown, Paul M. Conroy, Robert Florence | 1989-06-20 |
| 4836302 | Apparatus and method for removing and recovering oil and/or other oil-based drilling mud additives from drill cuttings | Joe K. Heilhecker, William H. Marshall | 1989-06-06 |