Issued Patents All Time
Showing 1–25 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11732531 | Modular earth boring tools having fixed blades and removable blade assemblies and related methods | Rudolf Carl Pessier, Don Q. Nguyen | 2023-08-22 |
| 10871036 | Hybrid drill bit and design method | Rudolf Carl Pessier, Don Q. Nguyen, Matthew J. Meiners, Karlos B. Cepeda, Michael S. Damschen +3 more | 2020-12-22 |
| 10316589 | Hybrid drill bit and design method | Rudolf Carl Pessier, Don Q. Nguyen, Matthew J. Meiners, Karlos B. Cepeda, Michael S. Damschen +3 more | 2019-06-11 |
| 10190366 | Hybrid drill bits having increased drilling efficiency | Robert J. Buske, Rudolf Carl Pessier, Don Q. Nguyen, Karlos B. Cepeda, Michael S. Damschen +5 more | 2019-01-29 |
| 10072462 | Hybrid drill bits | Rudolf Carl Pessier, Mitchell A. Rothe, Don Q. Nguyen, Karlos B. Cepeda, Michael S. Damschen +5 more | 2018-09-11 |
| 9810026 | Earth-boring tools and methods of forming earth-boring tools | — | 2017-11-07 |
| 9670736 | Hybrid drill bit | Ron D. McCormick, Rudolf Carl Pessier, Jack T. Oldham, Michael S. Damschen, Don Q. Nguyen +3 more | 2017-06-06 |
| 9353575 | Hybrid drill bits having increased drilling efficiency | Robert J. Buske, Rudolf Carl Pessier, Don Q. Nguyen, Karlos B. Cepeda, Michael S. Damschen +5 more | 2016-05-31 |
| 9316055 | Drill bit with a dynamic metal seal | Chih Lin, Aaron J. Dick, Jon David Schroder, Alejandro Flores, Robert Bradshaw | 2016-04-19 |
| 9249629 | Enhanced backup ring edge features for metal face seal in roller cone drill bits | Chih Lin, Terry J. Koltermann, Gregory L. Ricks | 2016-02-02 |
| 9187960 | Expandable reamer tools | Steven R. Radford, Scott Shiqiang Shu, Les T. Shale, Mark E. Morris, Mark R. Kizziar | 2015-11-17 |
| 9157280 | Enhanced backup ring features for metal face seal in roller cone drill bits | Chih Lin, Terry J. Koltermann, Alejandro Flores, Gregory L. Ricks | 2015-10-13 |
| 8978786 | System and method for adjusting roller cone profile on hybrid bit | Don Q. Nguyen, Rudolf Carl Pessier, Mark P. Blackman, Robert Bradshaw, Scott Allan Young +4 more | 2015-03-17 |
| 8925654 | Earth-boring tools and methods of forming earth-boring tools | — | 2015-01-06 |
| 8678111 | Hybrid drill bit and design method | Rudolf Carl Pessier, Don Q. Nguyen, Matthew J. Meiners, Karlos B. Cepeda, Michael S. Damschen +3 more | 2014-03-25 |
| 8459378 | Hybrid drill bit | Ron D. McCormick, Rudolf Carl Pessier, Jack T. Oldham, Michael S. Damschen, Don Q. Nguyen +3 more | 2013-06-11 |
| 8453763 | Expandable earth-boring wellbore reamers and related methods | Steven R. Radford, Scott Shiquiang Shu, Les T. Shale, Mark E. Morris, Mark R. Kizziar | 2013-06-04 |
| 8356398 | Modular hybrid drill bit | Ron D. McCormick, Rolf Carl Pessier, Don Q. Nguyen, Tim Marvel, Matthew R. Isbell +3 more | 2013-01-22 |
| 8141664 | Hybrid drill bit with high bearing pin angles | Don Q. Nguyen, Alan J. Massey | 2012-03-27 |
| 8028770 | Conformal bearing for rock drill bit | Aaron J. Dick, Chih Lin, Terry J. Koltermann, Daniel E. Scott, Don Q. Nguyen +4 more | 2011-10-04 |
| 7997354 | Expandable reamers for earth-boring applications and methods of using the same | Steven R. Radford, Scott Shiquiang Shu, Les T. Shale, Mark E. Morris, Mark R. Kizziar | 2011-08-16 |
| 7975779 | Threaded cone retention system for roller cone bits | Don Q. Nguyen, Eric C. Sullivan, Terry J. Koltermann, Aaron J. Dick, Scott Shiqiang Shu | 2011-07-12 |
| 7900717 | Expandable reamers for earth boring applications | Steven R. Radford, Scott Shiquiang Shu, J. Lindley Baugh | 2011-03-08 |
| 7861806 | Shank structure for rotary drill bits | Eric C. Sullivan, R. Scot Smith, Daniel E. Ruff, Danielle V. Roberts, Alan J. Massey | 2011-01-04 |
| 7861805 | Conformal bearing for rock drill bit | Aaron J. Dick, Chih Lin, Terry J. Kolterman, Dan E. Scott, Don Q. Nguyen +4 more | 2011-01-04 |