Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10005158 | Earth-boring tools with precise cutter pocket location and orientation and related methods | Eric C. Sullivan, Kenneth R. Evans, Kenneth A. Gibbs, James Andy Oxford | 2018-06-26 |
| 9782857 | Hybrid drill bit having increased service life | Don Q. Nguyen, Carl E. Poteet, III, Eric C. Sullivan, John F. Bradford, Mark P. Blackman +1 more | 2017-10-10 |
| 9580788 | Methods for automated deposition of hardfacing material on earth-boring tools and related systems | David K. Luce, Kenneth E. Gilmore, Timothy P. Uno, Keith L. Nehring | 2017-02-28 |
| 9273518 | Methods of coupling components of downhole tools, downhole tools and components of downhole tools | Redd H. Smith, James Andy Oxford | 2016-03-01 |
| 8969754 | Methods for automated application of hardfacing material to drill bits | David K. Luce, Kenneth E. Gilmore, Timothy P. Uno, Keith L. Nehring | 2015-03-03 |
| 8948917 | Systems and methods for robotic welding of drill bits | — | 2015-02-03 |
| 8731717 | Methods for manipulating cutting elements for earth-boring drill bits and tools | David K. Luce, Sean W. Wirth, Crystal A. Parrot | 2014-05-20 |
| 8698038 | Method and apparatus for the automated application of hardfacing material to rolling cutters of earth-boring drill bits | David K. Luce, Kenneth E. Gilmore, Keith L. Nehring | 2014-04-15 |
| 8471182 | Method and apparatus for automated application of hardfacing material to rolling cutters of hybrid-type earth boring drill bits, hybrid drill bits comprising such hardfaced steel-toothed cutting elements, and methods of use thereof | Bruce Stauffer, David K. Luce, Kenneth E. Gilmore, Keith L. Nehring | 2013-06-25 |
| 8450637 | Apparatus for automated application of hardfacing material to drill bits | David K. Luce, Kenneth E. Gilmore, Timothy P. Uno, Keith L. Nehring | 2013-05-28 |
| 8355815 | Methods, systems, and devices for manipulating cutting elements for earth-boring drill bits and tools | David K. Luce, Sean W. Wirth, Crystal A. Parrott | 2013-01-15 |
| 8141664 | Hybrid drill bit with high bearing pin angles | Anton F. Zahradnik, Don Q. Nguyen | 2012-03-27 |
| 7891443 | Hardfacing around ball loading hole for earth-boring bit | David K. Luce, Keith L. Nehring | 2011-02-22 |
| 7861806 | Shank structure for rotary drill bits | Anton F. Zahradnik, Eric C. Sullivan, R. Scot Smith, Daniel E. Ruff, Danielle V. Roberts | 2011-01-04 |
| 7823664 | Corrosion protection for head section of earth boring bit | David K. Luce, Eric C. Sullivan, John F. Bradford, Carmel Zouheir El Hakam, James L. Overstreet +1 more | 2010-11-02 |
| 7600589 | Rotary drill bits | Anton F. Zahradnik, Eric C. Sullivan, R. Scot Smith, Daniel E. Ruff, Danielle V. Roberts | 2009-10-13 |
| 7594454 | Methods of fabricating rotary drill bits | Anton F. Zahradnik, Eric C. Sullivan, R. Scot Smith, Daniel E. Ruff, Danielle V. Roberts | 2009-09-29 |
| 7472764 | Rotary drill bit shank, rotary drill bits so equipped, and methods of manufacture | Anton F. Zahradnik, Eric C. Sullivan, R. Scot Smith, Daniel E. Ruff, Danielle V. Roberts | 2009-01-06 |
| 6923276 | Streamlined mill-toothed cone for earth boring bit | James L. Overstreet, Rudolf Carl Pessier, Jeremy K. Morgan | 2005-08-02 |
| 6360832 | Hardfacing with multiple grade layers | James L. Overstreet, Ronald L. Jones, Mary K. Adams | 2002-03-26 |
| 6253862 | Earth-boring bit with cutter spear point hardfacing | James L. Overstreet, Ronald L. Jones, Trevor M. McAninch, Jeremy K. Morgan | 2001-07-03 |
| 6248149 | Hardfacing composition for earth-boring bits using macrocrystalline tungsten carbide and spherical cast carbide | James L. Overstreet | 2001-06-19 |
| RE37127 | Hardfacing composition for earth-boring bits | Kevin W. Schader, James L. Overstreet, Ronald L. Jones, Danny E. Scott | 2001-04-10 |
| 5663512 | Hardfacing composition for earth-boring bits | Kevin W. Schader, Ronald L. Jones, James L. Overstreet, Danny E. Scott, Mou-Chih Lu | 1997-09-02 |
| 5492186 | Steel tooth bit with a bi-metallic gage hardfacing | James L. Overstreet, Ronald L. Jones | 1996-02-20 |