Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10221629 | Polycrystalline super hard construction and a method for making same | Nedret Can, Habib Saridikmen, Roger William Nigel Nilen, Michael L. Doster, Anthony A. DiGiovanni +3 more | 2019-03-05 |
| 9637979 | Rotary drag bits including abrasive-impregnated cutting structures | Van Jordan Brackin, Jeffrey B. Lund, Danny E. Scott, Marcus Skeem | 2017-05-02 |
| 9359825 | Cutting element placement on a fixed cutter drill bit to reduce diamond table fracture | David Gavia, Floyd C. Felderhoff, Michael L. Doster | 2016-06-07 |
| 9085939 | Earth-boring tools attachable to a casing string and methods for their manufacture | Eric E. McClain, Jack T. Oldham, John C. Thomas, Marc W. Bird | 2015-07-21 |
| 8662207 | Rotary drag bits including abrasive-impregnated cutting structures | Van Jordan Brackin, Jeffrey B. Lund, Danny E. Scott, Marcus Skeem | 2014-03-04 |
| 8356398 | Modular hybrid drill bit | Ron D. McCormick, Rolf Carl Pessier, Don Q. Nguyen, Tim Marvel, Anton F. Zahradnik +3 more | 2013-01-22 |
| 8333814 | Abrasive-impregnated cutting structure having anisotropic wear resistance and drag bit including same | Van Jordan Brackin, Jeffrey B. Lund, Danny E. Scott, Marcus Skeem | 2012-12-18 |
| 8177001 | Earth-boring tools including abrasive cutting structures and related methods | Eric E. McClain, Michael L. Doster, John C. Thomas, Jarod DeGeorge, Chad T. Jurica | 2012-05-15 |
| RE42445 | Cutting structure for earth-boring bit to reduce tracking | Floyd C. Felderhoff, Rudolf Carl Pessier | 2011-06-14 |
| 7954571 | Cutting structures for casing component drillout and earth-boring drill bits including same | Eric E. McClain, Michael L. Doster, John C. Thomas, Jarod DeGeorge, Chad T. Jurica | 2011-06-07 |
| 7861809 | Rotary drag bit with multiple backup cutters | David Gavia, Ryan J. Hanford, Lane E. Snell, Jason E. Hoines, Eric E. McClain +1 more | 2011-01-04 |
| 7762355 | Rotary drag bit and methods therefor | Eric E. McClain, David Gavia, Lane E. Snell, Jason E. Hoines, Michael L. Doster | 2010-07-27 |
| 7647991 | Cutting structure for earth-boring bit to reduce tracking | Floyd C. Felderhoff, Rudolf Carl Pessier | 2010-01-19 |
| 7497280 | Abrasive-impregnated cutting structure having anisotropic wear resistance and drag bit including same | Van Jordan Brackin, Jeffrey B. Lund, Danny E. Scott, Marcus Skeem | 2009-03-03 |
| 7096981 | Alternating inclinations of compacts for drill bit | Greg Van Klompenburg, Brian Baker | 2006-08-29 |
| 7066288 | Asymmetric compact for drill bit | Greg Van Klompenburg, Brian Baker | 2006-06-27 |
| 6883623 | Earth boring apparatus and method offering improved gage trimmer protection | Ronny D. McCormick, Mumtaz Ball, Mark E. Anderson, Mark W. Dykstra, Michael L. Doster | 2005-04-26 |
| 6843333 | Impregnated rotary drag bit | Volker Richert, Van Jordan Brackin, Douglas J. Bobrosky, M. MacLean Price | 2005-01-18 |
| 6510906 | Impregnated bit with PDC cutters in cone area | Volker Richert, Van Jordan Brackin, Douglas J. Bobrosky | 2003-01-28 |
| 6443246 | Long barrel inserts for earth-boring bit | Rudolf Carl Pessier, Brian C. Wiesner, George E. Dolezal, James Lawrence Jacobsen, Brian Baker | 2002-09-03 |
| 6408958 | Superabrasive cutting assemblies including cutters of varying orientations and drill bits so equipped | Rudolf Carl Pessier, Michael L. Doster, Mark W. Dykstra, William Heuser | 2002-06-25 |
| 5996713 | Rolling cutter bit with improved rotational stabilization | Rudolf Carl Pessier, John Vanderstaay Kenner, Mohammad Swadi, Danny E. Scott | 1999-12-07 |
| 5695018 | Earth-boring bit with negative offset and inverted gage cutting elements | Rudolf Carl Pessier | 1997-12-09 |
| 5592995 | Earth-boring bit having shear-cutting heel elements | Danny E. Scott, Rudolf Carl Pessier, Nigel Charles Meany, Alain Besson | 1997-01-14 |
| 5586612 | Roller cone bit with positive and negative offset and smooth running configuration | Rudolf Carl Pessier | 1996-12-24 |