Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4482806 | Multi-tracer logging technique | Ovner R. Wagner, Jr., Robert P. Murphy, Roger L. Smith | 1984-11-13 |
| RE30767 | Method using lignosulfonates for high-temperature plugging | Betty J. Felber, Richard E. Marrs | 1981-10-13 |
| 4252194 | Method of using polymerized lignosulfonates for mobility control | Betty J. Felber | 1981-02-24 |