Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10309562 | Metal to metal wedge ring seal | — | 2019-06-04 |
| 10113372 | Centralizer | Jeffery Morrison, Brent J. Lirette, Paul L. Smith | 2018-10-30 |
| 9657548 | Apparatus and methods of running casing in a dual gradient system | Marcel Budde, Brent J. Lirette | 2017-05-23 |
| 7503398 | Methods and apparatus for actuating a downhole tool | R. Lee Colvard | 2009-03-17 |
| 7299880 | Surge reduction bypass valve | James G. Martens | 2007-11-27 |
| 7252152 | Methods and apparatus for actuating a downhole tool | R. Lee Colvard | 2007-08-07 |