Issued Patents All Time
Showing 26–50 of 132 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8714285 | Method for drilling with a fixed bladed bit | David R. Hall, Marcus Skeem, Francis Leany, Casey Webb | 2014-05-06 |
| 8668275 | Pick assembly with a contiguous spinal region | David R. Hall | 2014-03-11 |
| 8646848 | Resilient connection between a pick shank and block | David R. Hall, Jeff Jepson, Gary Peterson | 2014-02-11 |
| 8640768 | Sintered polycrystalline diamond tubular members | David R. Hall, Neil Cannon | 2014-02-04 |
| 8622155 | Pointed diamond working ends on a shear bit | David R. Hall, John Bailey | 2014-01-07 |
| 8616305 | Fixed bladed bit that shifts weight between an indenter and cutting elements | David R. Hall, Marcus Skeem, Francis Leany, Casey Webb | 2013-12-31 |
| 8590644 | Downhole drill bit | David R. Hall, John Bailey | 2013-11-26 |
| 8573331 | Roof mining drill bit | David R. Hall | 2013-11-05 |
| 8567532 | Cutting element attached to downhole fixed bladed bit at a positive rake angle | David R. Hall, Marcus Skeem, Francis Leany, Casey Webb | 2013-10-29 |
| 8534767 | Manually rotatable tool | David R. Hall, Gary Peterson, Jeff Jepson | 2013-09-17 |
| 8500209 | Manually rotatable tool | David R. Hall, Gary Peterson, Jeff Jepson | 2013-08-06 |
| 8485609 | Impact tool | David R. Hall, Scott Dahlgren, Tyson J. Wilde | 2013-07-16 |
| 8454096 | High-impact resistant tool | David R. Hall, Jeff Jepson | 2013-06-04 |
| 8449040 | Shank for an attack tool | David R. Hall, Jeff Jepson | 2013-05-28 |
| 8434573 | Degradation assembly | David R. Hall, Scott Dahlgren | 2013-05-07 |
| D678368 | Drill bit with a pointed cutting element | David R. Hall, Francis Leany, Casey Webb, Marcus Skeem | 2013-03-19 |
| 8365845 | High impact resistant tool | David R. Hall, Casey Webb, Michael Beazer | 2013-02-05 |
| D674422 | Drill bit with a pointed cutting element and a shearing cutting element | David R. Hall, Francis Leany, Casey Webb, Marcus Skeem | 2013-01-15 |
| 8342611 | Spring loaded pick | David R. Hall, Francis Leany | 2013-01-01 |
| 8322796 | Seal with contact element for pick shield | David R. Hall, Gary Peterson, Jeffrey B. Jepson | 2012-12-04 |
| 8313677 | Formable sealant barrier | David R. Hall | 2012-11-20 |
| 8261471 | Continuously adjusting resultant force in an excavating assembly | David R. Hall, Thomas Morris | 2012-09-11 |
| 8261480 | Rigid composite structure with a superhard interior surface | David R. Hall, Scott Dahlgren, Timothy C. Duke, Joshua Sensinger, Joe Fox +1 more | 2012-09-11 |
| 8250786 | Measuring mechanism in a bore hole of a pointed cutting element | David R. Hall, Thomas Morris | 2012-08-28 |
| 8240404 | Roof bolt bit | David R. Hall, Andrew Gerla | 2012-08-14 |