Issued Patents All Time
Showing 25 most recent of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10378288 | Downhole drill bit incorporating cutting elements of different geometries | David R. Hall, Ronald B. Crockett | 2019-08-13 |
| 9915102 | Pointed working ends on a bit | David R. Hall, Ronald B. Crockett | 2018-03-13 |
| 9708856 | Downhole drill bit | David R. Hall, Ronald B. Crockett | 2017-07-18 |
| 9540886 | Thick pointed superhard material | David R. Hall, Ronald B. Crockett, Jeff Jepson, Scott Dahlgren | 2017-01-10 |
| 9145742 | Pointed working ends on a drill bit | David R. Hall, Ronald B. Crockett | 2015-09-29 |
| 9051794 | High impact shearing element | David R. Hall, Ronald B. Crockett, Matt Kudla | 2015-06-09 |
| 9051795 | Downhole drill bit | David R. Hall, Ronald B. Crockett | 2015-06-09 |
| 8998346 | Attack tool with an interruption | David R. Hall, Ronald B. Crockett, Jeff Jepson | 2015-04-07 |
| 8783845 | System for aligning driven and idler rollers in printer | Bob Yraceburu | 2014-07-22 |
| 8651654 | Pinch roller apparatus for printer | Bob Yraceburu | 2014-02-18 |
| 8622155 | Pointed diamond working ends on a shear bit | David R. Hall, Ronald B. Crockett | 2014-01-07 |
| 8590644 | Downhole drill bit | David R. Hall, Ronald B. Crockett | 2013-11-26 |
| 8567942 | System for transporting media in printer | Paul Weiskopf, Richard Alan Kelley | 2013-10-29 |
| 8528664 | Downhole mechanism | David R. Hall | 2013-09-10 |
| 8136887 | Non-rotating pick with a pressed in carbide segment | David R. Hall, Ronald B. Crockett, Jeff Jepson | 2012-03-20 |
| 8122980 | Rotary drag bit with pointed cutting elements | David R. Hall, Ronald B. Crockett | 2012-02-28 |
| 8109349 | Thick pointed superhard material | David R. Hall, Ronald B. Crockett, Jeff Jepson, Scott Dahlgren | 2012-02-07 |
| 8028774 | Thick pointed superhard material | David R. Hall, Ronald B. Crockett, Jeff Jepson, Scott Dahlgren | 2011-10-04 |
| 8020471 | Method for manufacturing a drill bit | David R. Hall, Ronald B. Crockett | 2011-09-20 |
| 8011457 | Downhole hammer assembly | David R. Hall, Scott Dahlgren | 2011-09-06 |
| 7967082 | Downhole mechanism | David R. Hall | 2011-06-28 |
| 7886851 | Drill bit nozzle | David R. Hall | 2011-02-15 |
| 7762353 | Downhole valve mechanism | David R. Hall | 2010-07-27 |
| 7694756 | Indenting member for a drill bit | David R. Hall, Francis Leany | 2010-04-13 |
| 7669938 | Carbide stem press fit into a steel body of a pick | David R. Hall, Ronald B. Crockett | 2010-03-02 |