Issued Patents All Time
Showing 25 most recent of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11229989 | Methods of forming cutting elements with cutting faces exhibiting multiple coefficients of friction, and related methods | Juan Miguel Bilen, Anthony A. DiGiovanni, Suresh G. Patel, Rudolf Carl Pessier, Danny E. Scott +1 more | 2022-01-25 |
| 10151148 | Composite metallic elastomeric sealing components for roller cone drill bits | David A. Curry, Terry J. Koltermann, Stuart Hall | 2018-12-11 |
| 9909365 | Downhole tools having mechanical joints with enhanced surfaces | Danny E. Scott | 2018-03-06 |
| 9843244 | Nitrogen- and ceramic-surface-treated components for downhole motors and related methods | Kyle Taylor, Denis S. Kopecki | 2017-12-12 |
| 9821437 | Earth-boring tools having cutting elements with cutting faces exhibiting multiple coefficients of friction, and related methods | Juan Miguel Bilen, Anthony A. DiGiovanni, Suresh G. Patel, Rudolf Carl Pessier, Danny E. Scott +1 more | 2017-11-21 |
| 9290997 | Downhole tools including bearings and methods of forming same | Alejandro Flores, Aaron J. Dick, John F. Bradford, Louise F. van Staden, Gregory B. Swanepoel +4 more | 2016-03-22 |
| 9249629 | Enhanced backup ring edge features for metal face seal in roller cone drill bits | Terry J. Koltermann, Anton F. Zahradnik, Gregory L. Ricks | 2016-02-02 |
| 9157280 | Enhanced backup ring features for metal face seal in roller cone drill bits | Terry J. Koltermann, Anton F. Zahradnik, Alejandro Flores, Gregory L. Ricks | 2015-10-13 |
| 9112398 | Nitrogen- and ceramic-surface-treated components for downhole motors and related methods | Kyle Taylor, Denis S. Kopecki | 2015-08-18 |
| 8991525 | Earth-boring tools having cutting elements with cutting faces exhibiting multiple coefficients of friction, and related methods | Juan Miguel Bilen, Anthony A. DiGiovanni, Suresh G. Patel, Rudolf Carl Pessier, Danny E. Scott +1 more | 2015-03-31 |
| 8967301 | Composite metallic elastomeric sealing components for roller cone drill bits | David A. Curry, Terry J. Koltermann, Stuart Hall | 2015-03-03 |
| 8834026 | Bearings for downhole tools, downhole tools incorporating such bearings, and methods of cooling such bearings | Alejandro Flores, Aaron J. Dick, John F. Bradford, Louise F. van Staden, Gregory B. Swanepoel +4 more | 2014-09-16 |
| 8196682 | Earth boring bit with wear resistant bearing and seal | Aaron J. Dick | 2012-06-12 |
| 8028770 | Conformal bearing for rock drill bit | Aaron J. Dick, Terry J. Koltermann, Anton F. Zahradnik, Daniel E. Scott, Don Q. Nguyen +4 more | 2011-10-04 |
| 7896109 | Spacer ring for elastomeric seal | — | 2011-03-01 |
| 7861805 | Conformal bearing for rock drill bit | Aaron J. Dick, Terry J. Kolterman, Anton F. Zahradnik, Dan E. Scott, Don Q. Nguyen +4 more | 2011-01-04 |
| 7735583 | Roller cone bit bearing with elastomeric seal having self break-in property and method | — | 2010-06-15 |
| 7708090 | Excluder ring for earth-boring bit | Anton F. Zahradnik, Gregory L. Ricks, Gregory W. Peterson, Don Q. Nguyen, Terry J. Koltermann | 2010-05-04 |
| 7628231 | Protector for rock bit seals | — | 2009-12-08 |
| 7559381 | Surface textures for earth boring bits | — | 2009-07-14 |
| 7465096 | Earth boring bit with tilted hydrodynamic thrust bearing | Aaron J. Dick | 2008-12-16 |
| 7413037 | Metal face seal for an earth-boring bit | Don Q. Nguyen, Gregory L. Ricks, Terry J. Koltermann | 2008-08-19 |
| 7350600 | Shirttails for reducing damaging effects of cuttings | Christopher C. Beuershausen, Raul E. Lema, Ronald Hales, Don Q. Nguyen, Gregory L. Ricks +6 more | 2008-04-01 |
| 7311159 | PCD face seal for earth-boring bit | Terry J. Koltermann, Danny E. Scott | 2007-12-25 |
| 7306061 | Mud diverter for earth-boring bit | Gregory L. Ricks | 2007-12-11 |