Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10871036 | Hybrid drill bit and design method | Anton F. Zahradnik, Rudolf Carl Pessier, Don Q. Nguyen, Matthew J. Meiners, Karlos B. Cepeda +3 more | 2020-12-22 |
| 10316589 | Hybrid drill bit and design method | Anton F. Zahradnik, Rudolf Carl Pessier, Don Q. Nguyen, Matthew J. Meiners, Karlos B. Cepeda +3 more | 2019-06-11 |
| 9957757 | Cutting elements for drill bits for drilling subterranean formations and methods of forming such cutting elements | Chaitanya K. Vempati, Suresh G. Patel, Danielle M. Fuselier, Jim Powers, Nicholas J. Lyons | 2018-05-01 |
| 9670736 | Hybrid drill bit | Anton F. Zahradnik, Ron D. McCormick, Rudolf Carl Pessier, Michael S. Damschen, Don Q. Nguyen +3 more | 2017-06-06 |
| 9085939 | Earth-boring tools attachable to a casing string and methods for their manufacture | Eric E. McClain, Matthew R. Isbell, John C. Thomas, Marc W. Bird | 2015-07-21 |
| 8978788 | Cutting element for a drill bit used in drilling subterranean formations | Chaitanya K. Vempati, Suresh G. Patel, Danielle M. Fuselier, Jim Powers, Nicholas J. Lyons | 2015-03-17 |
| 8887839 | Drill bit for use in drilling subterranean formations | Chaitanya K. Vempati, Edwin R Reek, Danielle M. Fuselier, Suresh G. Patel, Robert A. Laing | 2014-11-18 |
| 8678111 | Hybrid drill bit and design method | Anton F. Zahradnik, Rudolf Carl Pessier, Don Q. Nguyen, Matthew J. Meiners, Karlos B. Cepeda +3 more | 2014-03-25 |
| 8459378 | Hybrid drill bit | Anton F. Zahradnik, Ron D. McCormick, Rudolf Carl Pessier, Michael S. Damschen, Don Q. Nguyen +3 more | 2013-06-11 |
| 8297380 | Casing and liner drilling shoes having integrated operational components, and related methods | L. Allen Sinor, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more | 2012-10-30 |
| 8225888 | Casing shoes having drillable and non-drillable cutting elements in different regions and related methods | L. Allen Sinor, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more | 2012-07-24 |
| 8225887 | Casing and liner drilling shoes with portions configured to fail responsive to pressure, and related methods | L. Allen Sinor, 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 | L. Allen Sinor, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more | 2012-06-26 |
| 8191654 | Methods of drilling using differing types of cutting elements | Eric E. McClain, John C. Thomas, Sarvesh Tyagi, Lester I. Clark, William Heuser | 2012-06-05 |
| 8172008 | Drilling apparatus with reduced exposure of cutters and methods of drilling | Mark W. Dykstra, William Heuser, Michael L. Doster, Theodore E. Zaleski, Jr., Terry D. Watts +3 more | 2012-05-08 |
| 8167059 | Casing and liner drilling shoes having spiral blade configurations, and related methods | L. Allen Sinor, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more | 2012-05-01 |
| 8127869 | Earth-boring tools, methods of making earth-boring tools and methods of drilling with earth-boring tools | Chaitanya K. Vempati, Suresh G. Patel, Danielle M. Fuselier | 2012-03-06 |
| 8066084 | Drilling apparatus with reduced exposure of cutters and methods of drilling | Mark W. Dykstra, William Heuser, Michael L. Doster, Theodore E. Zaleski, Jr., Terry D. Watts +3 more | 2011-11-29 |
| 8006785 | Casing and liner drilling bits and reamers | L. Allen Sinor, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more | 2011-08-30 |
| 7954570 | Cutting elements configured for casing component drillout and earth boring drill bits including same | Eric E. McClain, John C. Thomas, Sarvesh Tyagi, Lester I. Clark, William Heuser | 2011-06-07 |
| 7814990 | Drilling apparatus with reduced exposure of cutters and methods of drilling | Mark W. Dykstra, William Heuser, Michael L. Doster, Theodore E. Zaleski, Jr., Terry D. Watts +3 more | 2010-10-19 |
| 7748475 | Earth boring drill bits with casing component drill out capability and methods of use | Eric E. McClain | 2010-07-06 |
| 7703558 | Drilling tool for reducing cutter damage when drilling through formation changes, and methods of design and operation thereof | L. Allen Sinor | 2010-04-27 |
| 7624818 | Earth boring drill bits with casing component drill out capability and methods of use | Eric E. McClain | 2009-12-01 |
| 7455125 | Drilling tool equipped with improved cutting element layout to reduce cutter damage through formation changes, methods of design and operation thereof | L. Allen Sinor | 2008-11-25 |