Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9605490 | Riser isolation tool for deepwater wells | Joe E. Hess, Ronald Wayne Courville | 2017-03-28 |
| 9534488 | Electromagnetic ranging source suitable for use in a drill string | Doug N. Derr, Joe E. Hess | 2017-01-03 |