Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12428937 | System to seal an expandable tubular across sections having different diameters | Nanda Kishore Boddeda, Roy Nicolas Baker | 2025-09-30 |
| 10871036 | Hybrid drill bit and design method | Anton F. Zahradnik, Rudolf Carl Pessier, Don Q. Nguyen, Karlos B. Cepeda, Michael S. Damschen +3 more | 2020-12-22 |
| 10337255 | Cutting elements for earth-boring tools, earth-boring tools including such cutting elements, and related methods | Anthony A. DiGiovanni, Yavuz Kadioglu, Danny E. Scott, Rudolf Carl Pessier, Nicholas J. Lyons +5 more | 2019-07-02 |
| 10316589 | Hybrid drill bit and design method | Anton F. Zahradnik, Rudolf Carl Pessier, Don Q. Nguyen, Karlos B. Cepeda, Michael S. Damschen +3 more | 2019-06-11 |
| 9920575 | Formation-engaging element placement on earth-boring tools and related methods | Scott F. Donald, Reed W. Spencer | 2018-03-20 |
| 9243452 | Cutting elements for earth-boring tools, earth-boring tools including such cutting elements, and related methods | Anthony A. DiGiovanni, Yavuz Kadioglu, Danny E. Scott, Rudolf Carl Pessier, Nicholas J. Lyons +5 more | 2016-01-26 |
| 8887836 | Drilling systems for cleaning wellbores, bits for wellbore cleaning, methods of forming such bits, and methods of cleaning wellbores using such bits | Adam Richard Williams, Chad T. Jurica, Jason Coe | 2014-11-18 |
| 8678111 | Hybrid drill bit and design method | Anton F. Zahradnik, Rudolf Carl Pessier, Don Q. Nguyen, Karlos B. Cepeda, Michael S. Damschen +3 more | 2014-03-25 |
| 8376065 | Monitoring drilling performance in a sub-based unit | Sorin Gabriel Teodorescu, Eric C. Sullivan, John G. Evans | 2013-02-19 |
| 8201642 | Drilling assemblies including one of a counter rotating drill bit and a counter rotating reamer, methods of drilling, and methods of forming drilling assemblies | Steven R. Radford, Sean K. Berzas | 2012-06-19 |
| 7152703 | Compact for earth boring bit with asymmetrical flanks and shoulders | Raul E. Lema, Jimmy W. Eason | 2006-12-26 |
| 6739416 | Enhanced offset stabilization for eccentric reamers | W. Gregory Presley, Christopher S. Charles, D. Jay Clinkscales, Jeffrey B. Lund, Steven R. Radford +2 more | 2004-05-25 |
| 6711969 | Methods for designing rotary drill bits exhibiting sequences of substantially continuously variable cutter backrake angles | Jeffrey B. Lund, Thomas M. Harris | 2004-03-30 |
| 6695080 | Reaming apparatus and method with enhanced structural protection | W. Gregory Presley, Christopher S. Charles, Steven R. Radford, Mark E. Morris, D. Jay Clinkscales +3 more | 2004-02-24 |
| 6536543 | Rotary drill bits exhibiting sequences of substantially continuously variable cutter backrake angles | Jeffrey B. Lund, Thomas M. Harris | 2003-03-25 |
| 6527069 | Superabrasive cutter having optimized table thickness and arcuate table-to-substrate interfaces | Michael L. Doster, Marcus Skeem, Arthur A. Chaves | 2003-03-04 |
| 6053263 | Cutting element tip configuration for an earth-boring bit | — | 2000-04-25 |
| 5979575 | Hybrid rock bit | James L. Overstreet, Robert E. Grimes, Brian Baker | 1999-11-09 |