Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6397958 | Reaming apparatus and method with ability to drill out cement and float equipment in casing | Christopher S. Charles, William Gregory Presley, Sean K. Berzas, Douglas J. Bobrosky, Mark W. Dykstra +2 more | 2002-06-04 |
| 6116356 | Reaming apparatus and method with enhanced stability and transition from pilot hole to enlarged bore diameter | Michael L. Doster, Rudolf Carl Pessier, Bart T. McDonald | 2000-09-12 |
| 6009963 | Superabrasive cutting element with enhanced stiffness, thermal conductivity and cutting efficiency | Arthur A. Chaves, Craig H. Cooley, David Martin Johnson, Eoin M. O'Tighearnaigh, Luther Lawford White, III | 2000-01-04 |
| 5765653 | Reaming apparatus and method with enhanced stability and transition from pilot hole to enlarged bore diameter | Michael L. Doster, Rudolf Carl Pessier, Bart T. McDonald | 1998-06-16 |