Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8783351 | Method and apparatus for cementing a wellbore | Lindsey Lee, Gene Hill, Jeffrey A. Stokes | 2014-07-22 |
| 7950409 | Rupture disc assembly that withstands much higher back pressures than actuation pressure | Jeffrey A. Stokes, Donald R. Hibler, Jr. | 2011-05-31 |
| 5154202 | Low forward pressure burst-high backpressure resistant rupture disc | Donald R. Hibler, Jr., Earl D. Miller, Jr. | 1992-10-13 |
| 4821909 | Hygienic pressure relief panel unit | Donald R. Hibler, Jr. | 1989-04-18 |
| 4662126 | Vibration resistant explosion control vent | — | 1987-05-05 |
| 4512491 | Dual range rupture disc assembly | Robert L. DeGood | 1985-04-23 |