Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11753905 | Downhole tool actuator with viscous fluid clearance paths | Ross Dusterhoft, Brad R. Pickle, Leo G. Collins, Adam Beck, Matthew Lawrence Apiecionek | 2023-09-12 |
| 7032675 | Thermally-controlled valves and methods of using the same in a wellbore | David Joe Steele, Russell Irving Bayh, III, Joseph D. Parlin, Dan P. Saurer | 2006-04-25 |
| 6702025 | Hydraulic control assembly for actuating a hydraulically controllable downhole device and method for use of same | — | 2004-03-09 |
| 6302210 | Safety valve utilizing an isolation valve and method of using the same | Robert W. Crow, Michael B. Vinzant, Gerald L. LeBoeuf | 2001-10-16 |
| 5249630 | Perforating type lockout tool | Rennie L. Dickson | 1993-10-05 |
| 5125457 | Resilient seal for curved flapper valve | — | 1992-06-30 |
| 5022427 | Annular safety system for gas lift production | Ronald K. Churchman, Nam Van Le | 1991-06-11 |
| RE32343 | Well safety valve | Michael B. Vinzant, Steven C. Speegle, Robert L. Hilts | 1987-02-03 |
| 4461353 | Well safety valve | Michael B. Vinzant, Steven C. Speegle, Robert L. Hilts | 1984-07-24 |