Issued Patents All Time
Showing 101–125 of 141 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6598682 | Reservoir communication with a wellbore | Ashley Bernard Johnson, James E. Brooks, Lawrence A. Behrmann, Adinathan Venkitaraman, Ian C. Walton +3 more | 2003-07-29 |
| 6564876 | Packer | Vladimir Vaynshteyn, James D. Hendrickson, Jim B. Benton, Raghu Madhaven, Mitchell G. Willcox | 2003-05-20 |
| 6551630 | Genera Prunus endocarp dietary supplement | Robert S. Green | 2003-04-22 |
| 6550541 | Valve assembly | — | 2003-04-22 |
| 6516886 | Well isolation system | — | 2003-02-11 |
| 6457521 | Method and apparatus for continuously testing a well | Bjorn Langseth, Christopher W. Spiers | 2002-10-01 |
| 6439306 | Actuation of downhole devices | — | 2002-08-27 |
| 6401826 | Lubricator for underbalanced drilling | — | 2002-06-11 |
| 6386289 | Reclosable circulating valve for well completion systems | — | 2002-05-14 |
| 6357525 | Method and apparatus for testing a well | Bjorn Langseth, Christopher W. Spiers, Mark Vella | 2002-03-19 |
| 6354378 | Method and apparatus for formation isolation in a well | — | 2002-03-12 |
| 6355250 | Use of genera prunus endocarp as a dietary supplement | Robert S. Green | 2002-03-12 |
| 6352110 | Method and apparatus for continuously testing a well | Bjorn Langseth, Christopher W. Spiers | 2002-03-05 |
| 6352119 | Completion valve assembly | — | 2002-03-05 |
| 6330913 | Method and apparatus for testing a well | Bjorn Langseth, Christopher W. Spiers, Mark Vella | 2001-12-18 |
| 6318469 | Completion equipment having a plurality of fluid paths for use in a well | — | 2001-11-20 |
| 6315050 | Packer | Vladimir Vaynshteyn, James D. Hendrickson, Jim B. Benton, Raghu Madhavan, Mitchell G. Willcox | 2001-11-13 |
| 6302216 | Flow control and isolation in a wellbore | — | 2001-10-16 |
| 6293346 | Method and apparatus for relieving pressure | — | 2001-09-25 |
| 6250383 | Lubricator for underbalanced drilling | — | 2001-06-26 |
| 6247897 | Vane system | — | 2001-06-19 |
| 6244351 | Pressure-controlled actuating mechanism | Anthony P. Vovers | 2001-06-12 |
| 6230807 | Valve operating mechanism | — | 2001-05-15 |
| 6231265 | Self-aligning subsea latch mechanism | Gary L. Rytlewski, John Meijer | 2001-05-15 |
| 6227298 | Well isolation system | — | 2001-05-08 |