Issued Patents All Time
Showing 1–25 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7387164 | Method and apparatus for selective injection or flow control with through-tubing operation capacity | Ronald E. Pringle | 2008-06-17 |
| 6892816 | Method and apparatus for selective injection or flow control with through-tubing operation capacity | Ronald E. Pringle | 2005-05-17 |
| 6631767 | Method and apparatus for selective injection or flow control with through-tubing operation capacity | Ronald E. Pringle | 2003-10-14 |
| 6491102 | Downhole multiplexer and related methods | Dwayne Leismer, Thomas G. Hill, Jr. | 2002-12-10 |
| 6422312 | Multizone production monitoring system | Leroy C. Delatorre, James Reaux, Ronald E. Pringle | 2002-07-23 |
| 6247536 | Downhole multiplexer and related methods | Dwayne Leismer, Thomas G. Hill, Jr. | 2001-06-19 |
| 6026897 | Communication conduit in a well tool | Ronald E. Pringle | 2000-02-22 |
| 6012518 | Electro-hydraulic well tool actuator | Ronald E. Pringle, Vitold P. Serafin | 2000-01-11 |
| 5996687 | Full bore variable flow control device | Ronald E. Pringle | 1999-12-07 |
| 5960874 | Apparatus for remote control of multilateral wells | Ronald E. Pringle | 1999-10-05 |
| 5927401 | Method and apparatus for remote control of multilateral wells | Ronald E. Pringle | 1999-07-27 |
| 5918669 | Method and apparatus for remote control of multilateral wells | Ronald E. Pringle | 1999-07-06 |
| 5861562 | Flow measurement mandrel | Ronald E. Pringle | 1999-01-19 |
| 5823263 | Method and apparatus for remote control of multilateral wells | Ronald E. Pringle | 1998-10-20 |
| 5494105 | Method and related system for operating a downhole tool | — | 1996-02-27 |
| 5394951 | Bottom hole drilling assembly | Ronald E. Pringle, Brian K. Moore | 1995-03-07 |
| 5348088 | Coiled tubing external connector with packing element | Walter J. Laflin | 1994-09-20 |
| 5314032 | Movable joint bent sub | Ronald E. Pringle | 1994-05-24 |
| 5311939 | Multiple use well packer | Ronald E. Pringle | 1994-05-17 |
| 5257663 | Electrically operated safety release joint | Ronald E. Pringle | 1993-11-02 |
| 5236047 | Electrically operated well completion apparatus and method | Ronald E. Pringle | 1993-08-17 |
| 5230383 | Electrically actuated well annulus safety valve | Ronald E. Pringle | 1993-07-27 |
| 5226491 | Solenoid operated blanking block valve | Ronald E. Pringle | 1993-07-13 |
| 5207272 | Electrically actuated well packer | Ronald E. Pringle | 1993-05-04 |
| 5165480 | Method and apparatus of locking closed a subsurface safety system | Danny W. Wagoner, David Parker | 1992-11-24 |