Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6036765 | Organoclay compositions and method of preparation | Thomas C. Farrow, Chris A. Rasmussen, William R. Menking, David Hugh Durham | 2000-03-14 |
| 5837654 | High temperature environmentally benign drilling fluid, and viscosifying additives for use therewith | David Hugh Durham, Thomas C. Farrow | 1998-11-17 |
| 5391228 | Method for preparing high solids bentonite slurries | — | 1995-02-21 |
| 5266538 | Method for preparing high solids bentonite slurries | Milburn I. Knudson, Jr., David J. Hanlon, William R. Menking, Patricia M. Lewis | 1993-11-30 |