Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6978842 | Volume compensated shifting tool | Dennis M. Read, Jr. | 2005-12-27 |
| 6715557 | Tool string | Rodney J. Wetzel, Stephen Meschall, Dennis M. Read, Jr. | 2004-04-06 |
| 6494264 | Wellbore flow control device | Ronald E. Pringle, Dwyane D. Leismer | 2002-12-17 |
| 6328109 | Downhole valve | Ronald E. Pringle, Dennis M. Read, Jr. | 2001-12-11 |
| 6321842 | Flow control in a wellbore | Ronald E. Pringle | 2001-11-27 |
| 6311776 | Dual diverter and orientation device for multilateral completions and method | Ronald E. Pringle, Robert Coon | 2001-11-06 |
| 6308783 | Wellbore flow control device | Ronald E. Pringle, Dwayne Leismer | 2001-10-30 |
| 6247535 | Orienting and locking swivel and method | Ronald E. Pringle | 2001-06-19 |
| 6241015 | Apparatus for remote control of wellbore fluid flow | Ronald E. Pringle, Dwayne Leismer | 2001-06-05 |
| 6237683 | Wellbore flow control device | Ronald E. Pringle, Dwayne Leismer | 2001-05-29 |
| 6227302 | Apparatus and method for controlling fluid flow in a wellbore | Ronald E. Pringle | 2001-05-08 |
| 6209649 | Selective re-entry tool for multiple tubing completions and method of using | Ronald E. Pringle, Dwayne Leismer | 2001-04-03 |