Issued Patents 2020
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10851613 | Two-part restriction element for large-bore downhole isolation tool and method | Michael D. Wroblicky, Dennis Roessler, John T. Hardesty | 2020-12-01 |
| 10704357 | Device and method for opening and stopping a toe valve | Dennis Roessler, John T. Hardesty | 2020-07-07 |
| 10704358 | Device and method for opening and stopping a toe valve | Dennis Roessler, John T. Hardesty | 2020-07-07 |
| 10612340 | Wellbore plug isolation system and method | Philip M. Snider, John T. Hardesty, Michael D. Wroblicky, Nathan G. Clark, James A. Rollins +1 more | 2020-04-07 |
| 10584557 | Debris preventing downhole air lock device and method | Dennis Roessler, Raymond C. Shaffer | 2020-03-10 |