Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11428050 | Reverse circulation hybrid bit | — | 2022-08-30 |
| 10920497 | No blade bit | Ben Chrest | 2021-02-16 |
| 10801266 | Earth-boring tools having fixed blades and rotatable cutting structures and related methods | Gregory L. Ricks, Floyd C. Felderhoff | 2020-10-13 |
| 10597947 | Reamers for earth-boring applications having increased stability and related methods | Nathaniel R. Adams, Kendrick D. McGee, Mitchell F. Marks | 2020-03-24 |
| 10190366 | Hybrid drill bits having increased drilling efficiency | Anton F. Zahradnik, Robert J. Buske, Rudolf Carl Pessier, Don Q. Nguyen, Karlos B. Cepeda +5 more | 2019-01-29 |
| 10072462 | Hybrid drill bits | Anton F. Zahradnik, Rudolf Carl Pessier, Don Q. Nguyen, Karlos B. Cepeda, Michael S. Damschen +5 more | 2018-09-11 |
| 9353575 | Hybrid drill bits having increased drilling efficiency | Anton F. Zahradnik, Robert J. Buske, Rudolf Carl Pessier, Don Q. Nguyen, Karlos B. Cepeda +5 more | 2016-05-31 |