Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9976375 | Blowout preventer shut-in assembly of last resort | Johnnie E. Kotrla, Ross Stevenson, Paul Toudouze | 2018-05-22 |
| 9803447 | Asymmetrical button for ram-type blowout preventers | David J. McWhorter, Charles E. Gibbs, Steven F. Shimonek | 2017-10-31 |
| 9644444 | Load-sharing ram packer for ram type blowout preventers | — | 2017-05-09 |
| 9068427 | Asymmetrical button for ram-type blowout preventers | David J. McWhorter, Charles E. Gibbs, Steven F. Shimonek | 2015-06-30 |
| 9033049 | Blowout preventer shut-in assembly of last resort | Johnnie E. Kotrla, Ross Stevenson, Paul Toudouze | 2015-05-19 |
| 8944403 | Blowout preventer with pressure-isolated operating piston assembly | David J. McWhorter, Charles E. Gibbs, Steven F. Shimonek | 2015-02-03 |
| 8360147 | Location-and-rotation feedback tool for subsea wellheads and method of operating same | David L. Ford | 2013-01-29 |
| 7686091 | Device to insert a flexible member into pressurized wellhead housing | Charles E. Jennings, David Daniel Comeaux | 2010-03-30 |