Issued Patents 2011
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8020333 | Cylinder with polycrystalline diamond interior | David R. Hall, Ronald B. Crockett, Scott Dahlgren, Timothy C. Duke, Joshua Sensinger +1 more | 2011-09-20 |
| 7997661 | Tapered bore in a pick | David R. Hall, Scott Dahlgren | 2011-08-16 |
| 7984772 | Downhole centrifugal drilling fluid separator | David R. Hall, Scott Dahlgren, David Lundgreen | 2011-07-26 |
| 7980332 | Downhole centrifugal drilling fluid separator | David R. Hall, Scott Dahlgren, David Lundgreen | 2011-07-19 |
| 7954401 | Method of assembling a drill bit with a jack element | David R. Hall, Francis Leany, Tyson J. Wilde | 2011-06-07 |
| 7950746 | Attack tool for degrading materials | David R. Hall, Ronald B. Crockett, Jeff Jepson, Michael Barnhill | 2011-05-31 |
| 7938203 | Downhole centrifugal drilling fluid separator | David R. Hall, Scott Dahlgren, David Lundgreen | 2011-05-10 |