Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9102865 | Wellbore servicing fluids comprising cationic polymers and methods of using same | — | 2015-08-11 |
| 6730637 | Reducing fluid loss in a drilling fluid | Wayne S. Stewart, Nathan E. Stacy, Bharat B. Patel, Sam B. Ledbetter, JR., Alvin Evans, Jr. | 2004-05-04 |
| 6667354 | Stable liquid suspension compositions and suspending mediums for same | Alvin Evans, Jr. | 2003-12-23 |
| 6451743 | Stable liquid suspension compositions and method of making and use thereof | — | 2002-09-17 |
| 5849674 | Compositions and processes for oil field applications | Ahmad Moradi-Araghi, Donald D. Bruning, David R. Zornes | 1998-12-15 |
| 5480863 | Brine viscosification | Johnna E. Oakley, Alvin Evans, Jr., Wayne S. Stewart | 1996-01-02 |
| 5480933 | Acceleration of gelation of water soluble polymers | Alvin Evans, Jr. | 1996-01-02 |
| 5447986 | Acceleration of gelation of water soluble polymers | Alvin Evans, Jr. | 1995-09-05 |