Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6204224 | Polyalkyl methacrylate copolymers for rheological modification and filtration control for ester and synthetic based drilling fluids | Lirio Quintero, William R. Bradford, Dennis K. Clapper | 2001-03-20 |