Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8881835 | Manipulator tool and tool catcher useful with wellbore reverse circulation | Robert M. Tessari, Tommy M. Warren | 2014-11-11 |
| 8783368 | Well tool with shearable collet | Erik P. Eriksen | 2014-07-22 |
| 8443906 | Tools and methods useful with wellbore reverse circulation | Robert M. Tessari, Tommy M. Warren | 2013-05-21 |
| 7647990 | Method for drilling with a wellbore liner | Robert M. Tessari, Tommy M. Warren | 2010-01-19 |
| 6782954 | Open hole straddle tool | Witold Serafin, Piro Shkurti | 2004-08-31 |
| 6244642 | Retrievable bridge plug and retrieving tool | Vitold P. Serafin, Piro Shkurti | 2001-06-12 |
| 6220348 | Retrievable bridge plug and retrieving tool | Vitold P. Serafin, Piro Shkurti | 2001-04-24 |