Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6831042 | Use of anionic dispersion polymers as viscosity modifiers in aqueous drilling fluids | Cathy C. Johnson | 2004-12-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6831042 | Use of anionic dispersion polymers as viscosity modifiers in aqueous drilling fluids | Cathy C. Johnson | 2004-12-14 |