Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10309157 | Cutting element incorporating a cutting body and sleeve and an earth-boring tool including the cutting element | Anthony A. DiGiovanni, Nicholas J. Lyons, Matthew S. Hale, Konstantin E. Morozov, John H. Liversage +1 more | 2019-06-04 |
| 9816324 | Cutting element incorporating a cutting body and sleeve and method of forming thereof | Anthony A. DiGiovanni, Nicholas J. Lyons, Matthew S. Hale, Konstantin E. Morozov, John H. Liversage +1 more | 2017-11-14 |
| 9540884 | Drill bit with continuously sharp edge cutting elements | Robert M. Welch, Eric E. McClain | 2017-01-10 |
| 9068407 | Drilling assemblies including expandable reamers and expandable stabilizers, and related methods | Steven R. Radford, Anders K. Nesheim | 2015-06-30 |
| 8911522 | Methods of forming inserts and earth-boring tools | Christopher J. Cleboski, Suresh G. Patel, Danny E. Scott | 2014-12-16 |
| 8720609 | Drill bit with continuously sharp edge cutting elements | Robert M. Welch, Eric E. McClain | 2014-05-13 |
| 8297380 | Casing and liner drilling shoes having integrated operational components, and related methods | Jack T. Oldham, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more | 2012-10-30 |
| 8225887 | Casing and liner drilling shoes with portions configured to fail responsive to pressure, and related methods | Jack T. Oldham, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more | 2012-07-24 |
| 8225888 | Casing shoes having drillable and non-drillable cutting elements in different regions and related methods | Jack T. Oldham, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more | 2012-07-24 |
| 8205693 | Casing and liner drilling shoes having selected profile geometries, and related methods | Jack T. Oldham, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more | 2012-06-26 |
| 8167059 | Casing and liner drilling shoes having spiral blade configurations, and related methods | Jack T. Oldham, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more | 2012-05-01 |
| 8061456 | Chamfered edge gage cutters and drill bits so equipped | Suresh G. Patel, Danny E. Scott | 2011-11-22 |
| 8020641 | Drill bit with continuously sharp edge cutting elements | Robert M. Welch, Eric E. McClain | 2011-09-20 |
| 8006785 | Casing and liner drilling bits and reamers | Jack T. Oldham, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more | 2011-08-30 |
| 7703558 | Drilling tool for reducing cutter damage when drilling through formation changes, and methods of design and operation thereof | Jack T. Oldham | 2010-04-27 |
| 7455125 | Drilling tool equipped with improved cutting element layout to reduce cutter damage through formation changes, methods of design and operation thereof | Jack T. Oldham | 2008-11-25 |
| 7395882 | Casing and liner drilling bits | Jack T. Oldham, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more | 2008-07-08 |
| 6397958 | Reaming apparatus and method with ability to drill out cement and float equipment in casing | Christopher S. Charles, William Gregory Presley, Sean K. Berzas, Douglas J. Bobrosky, Mark W. Dykstra +2 more | 2002-06-04 |
| 6302223 | Rotary drag bit with enhanced hydraulic and stabilization characteristics | — | 2001-10-16 |
| 6298930 | Drill bits with controlled cutter loading and depth of cut | Wayne R. Hansen, Mark W. Dykstra, Craig H. Cooley, Gordon A. Tibbitts | 2001-10-09 |
| 5131478 | Low friction subterranean drill bit and related methods | J. Ford Brett, Tommy M. Warren, Suzanne M. Behr | 1992-07-21 |
| 5111892 | Imbalance compensated drill bit with hydrostatic bearing | Tommy M. Warren | 1992-05-12 |