Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7950409 | Rupture disc assembly that withstands much higher back pressures than actuation pressure | Jeffrey A. Stokes, Eddie R. Malcolm | 2011-05-31 |
| 7533727 | Oil well completion tool having severable tubing string barrier disc | John A. Barton, Mark Burris, Daniel O'Halloran, Joel Wicoff | 2009-05-19 |
| 6752212 | Dump valve assembly for selective draining of liquid from an oil well pipe stream | Mark Burris | 2004-06-22 |
| 6591915 | Method for selective draining of liquid from an oil well pipe string | Mark Burris | 2003-07-15 |
| 5154202 | Low forward pressure burst-high backpressure resistant rupture disc | Eddie R. Malcolm, Earl D. Miller, Jr. | 1992-10-13 |
| 4821909 | Hygienic pressure relief panel unit | Eddie R. Malcolm | 1989-04-18 |
| 4549734 | Ratchet lock mechanism for exercise hip, leg and squat sled | Ernest D. Mask | 1985-10-29 |