Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10900290 | Fixed cutter completions bit | Matthew Charles Stroever, Jeffery L. Johnson, Charles Daniel Johnson | 2021-01-26 |
| 10494873 | Roller cone bit having gland for full seal capture | Chengwei Chiu, Matthew Charles Stroever | 2019-12-03 |
| 10337272 | Hybrid roller cone and junk mill bit | Matthew Charles Stroever, Sterling Robinson | 2019-07-02 |
| 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, Mitchell A. Rothe, Don Q. Nguyen, Karlos B. Cepeda +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 |