Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8899322 | Autonomous downhole control methods and devices | William Befeld, Robert A. Estes | 2014-12-02 |
| 8528637 | Downhole depth computation methods and related system | William Befeld, Robert A. Estes | 2013-09-10 |
| 8122954 | Downhole depth computation methods and related system | Robert A. Estes, Jerry Cerkovnik, William Befeld | 2012-02-28 |
| 8074737 | Wireless perforating gun initiation | Freeman L. Hill, David M. Chace, Randy L. Evans | 2011-12-13 |
| 7757769 | Wellbore and reservoir treatment device and method | Freeman L. Hill, Joseph Gregory Barolak, Randy L. Evans | 2010-07-20 |