Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6784140 | Thermally stable, substantially water-free well fluid | William E. Foxenberg | 2004-08-31 |
| 6746992 | High density thermally stable well fluids | Robert L. Horton, William E. Foxenberg | 2004-06-08 |