Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4428429 | Method for sweep improvement utilizing gel-forming lignins | Charles A. Christopher | 1984-01-31 |
| RE30767 | Method using lignosulfonates for high-temperature plugging | Dwight L. Dauben, Richard E. Marrs | 1981-10-13 |
| 4275789 | Silicate activated lignosulfonate gel treatments of conductive zones | Dan D. Lawrence | 1981-06-30 |
| 4257813 | Formation treatment with silicate activated lignosulfonate gel | Dan D. Lawrence | 1981-03-24 |
| 4252194 | Method of using polymerized lignosulfonates for mobility control | Dwight L. Dauben | 1981-02-24 |