Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9410072 | Cement retarder and method of using the same | — | 2016-08-09 |
| 8071510 | Method of increasing lubricity of brine-based drilling fluids and completion brines | Mingjie Ke | 2011-12-06 |
| 4851142 | Fluid loss additive for well drilling fluids | Claus-Peter Herold, Heinz Mueller | 1989-07-25 |