Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10961801 | Fracturing systems and methods with rams | Adam J. Christopherson, Nicholas Ruff, Michael Krejci, Leonard Vogel, Kirk P. Guidry +1 more | 2021-03-30 |
| 9238950 | Blowout preventer with packer assembly and method of using same | — | 2016-01-19 |
| 8444109 | Blowout preventer translating shaft locking system | — | 2013-05-21 |
| 7207382 | Shearing sealing ram | — | 2007-04-24 |
| 5165704 | Blowout preventer bonnet seal carrier | Marshall Montgomery | 1992-11-24 |
| 5005802 | Variable bore packer for a ram type blowout preventer | David J. McWhorter, Bolie C. Williams, III, Eric G. Childs | 1991-04-09 |
| 4602794 | Annular blowout preventer with upper and lower spherical sealing surfaces and rigid translation element | Richard A. Olson | 1986-07-29 |
| 4580628 | Blowout preventer stacks and method of tensioning stack tie rods | — | 1986-04-08 |
| 4579314 | Annular blowout preventer | William M. Taylor, Bolie C. Williams, III | 1986-04-01 |
| 4460149 | Annular blowout preventer with upper and lower spherical sealing surfaces | Richard A. Olson | 1984-07-17 |
| 4460150 | Annular blowout preventer | Robert J. Turlak, Bolie C. Williams, III | 1984-07-17 |
| 4458876 | Annular blowout preventer | Bolie C. Williams, III | 1984-07-10 |
| 4438900 | Locking mechanism for annular blowout preventer | Richard A. Olson | 1984-03-27 |
| 4283039 | Annular blowout preventer with upper and lower spherical sealing surfaces | Richard A. Olson | 1981-08-11 |