Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10240440 | Total control perforator and system | Don Umphries | 2019-03-26 |
| 10138688 | Wireless downhole tool positioning control | Don Umphries | 2018-11-27 |
| 10119349 | Redundant drill string cutting system | Don Umphries | 2018-11-06 |
| 9476290 | Bottom hole firing head and method | Don Umphries | 2016-10-25 |
| 9033032 | Wireless downhole tool positioning control | Don Umphries | 2015-05-19 |
| 8910556 | Bottom hole firing head and method | Don Umphries | 2014-12-16 |
| 8302693 | Wireless downhole tool positioning system | Don Umphries | 2012-11-06 |
| 8286702 | Wireless downhole tool positioning system | Don Umphries | 2012-10-16 |
| 8272441 | Wireless downhole tool positioning system | Don Umphries | 2012-09-25 |
| 6220370 | Circulating gun system | David S. Wesson, Lyle W. Andrich | 2001-04-24 |