Issued Patents 2004
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6831043 | High performance water based drilling mud and method of use | Emanuel Stamatakis, Eric A. Davis, Jim Friedheim | 2004-12-14 |
| 6828279 | Biodegradable surfactant for invert emulsion drilling fluid | Burnhan Hoxha, Reginald Bell | 2004-12-07 |
| 6806233 | Methods of using reversible phase oil based drilling fluid | — | 2004-10-19 |
| 6793025 | Double emulsion based drilling fluids | Reginald Bell, Steve Young, Ahmadi Tehrani | 2004-09-21 |
| 6790811 | Oil based drilling fluid | — | 2004-09-14 |
| 6770602 | Oil based well fluids with high solids content | Reginald Bell, Burhan Hoxha, Jim Friedheim | 2004-08-03 |