Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7762355 | Rotary drag bit and methods therefor | Eric E. McClain, David Gavia, Lane E. Snell, Jason E. Hoines, Matthew R. Isbell | 2010-07-27 |
| 7096978 | Drill bits with reduced exposure of cutters | Mark W. Dykstra, William Heuser, Theodore E. Zaleski, Jr., Jack T. Oldham, Terry D. Watts +3 more | 2006-08-29 |
| 6935441 | Drill bits with reduced exposure of cutters | Mark W. Dykstra, William Heuser, Theodore E. Zaleski, Jr., Jack T. Oldham, Terry D. Watts +3 more | 2005-08-30 |
| 6883623 | Earth boring apparatus and method offering improved gage trimmer protection | Ronny D. McCormick, Mumtaz Ball, Mark E. Anderson, Mark W. Dykstra, Matthew R. Isbell | 2005-04-26 |
| 6779613 | Drill bits with controlled exposure of cutters | Mark W. Dykstra, William Heuser, Theodore E. Zaleski, Jr., Jack T. Oldham, Terry D. Watts +3 more | 2004-08-24 |
| 6575256 | Drill bit with lateral movement mitigation and method of subterranean drilling | — | 2003-06-10 |
| 6527069 | Superabrasive cutter having optimized table thickness and arcuate table-to-substrate interfaces | Matthew J. Meiners, Marcus Skeem, Arthur A. Chaves | 2003-03-04 |
| 6460631 | Drill bits with reduced exposure of cutters | Mark W. Dykstra, William Heuser, Theodore E. Zaleski, Jr., Jack T. Oldham, Terry D. Watts +3 more | 2002-10-08 |
| 6426857 | Protective circuit for a power field-effect transistor | Juergen Motz, Horst Singer, Rolf Falliano | 2002-07-30 |
| 6408958 | Superabrasive cutting assemblies including cutters of varying orientations and drill bits so equipped | Matthew R. Isbell, Rudolf Carl Pessier, Mark W. Dykstra, William Heuser | 2002-06-25 |
| 6401844 | Cutter with complex superabrasive geometry and drill bits so equipped | Rudolf Carl Pessier | 2002-06-11 |
| 6176333 | Diamond cap cutting elements with flats | — | 2001-01-23 |
| 6116356 | Reaming apparatus and method with enhanced stability and transition from pilot hole to enlarged bore diameter | Rudolf Carl Pessier, David M. Schnell, Bart T. McDonald | 2000-09-12 |
| 6112836 | Rotary drill bits employing tandem gage pad arrangement | John R. Spaar, James A. Norris, Christopher C. Beuershausen, Rudolf Carl Pessier, Michael P. Ohanian +2 more | 2000-09-05 |
| 5957223 | Bi-center drill bit with enhanced stabilizing features | Jack T. Oldham | 1999-09-28 |
| 5765653 | Reaming apparatus and method with enhanced stability and transition from pilot hole to enlarged bore diameter | Rudolf Carl Pessier, David M. Schnell, Bart T. McDonald | 1998-06-16 |