Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8066084 | Drilling apparatus with reduced exposure of cutters and methods of drilling | Mark W. Dykstra, Michael L. Doster, Theodore E. Zaleski, Jr., Jack T. Oldham, Terry D. Watts +3 more | 2011-11-29 |
| 7954570 | Cutting elements configured for casing component drillout and earth boring drill bits including same | Eric E. McClain, John C. Thomas, Sarvesh Tyagi, Jack T. Oldham, Lester I. Clark | 2011-06-07 |
| 7866413 | Methods for designing and fabricating earth-boring rotary drill bits having predictable walk characteristics and drill bits configured to exhibit predicted walk characteristics | Bruce Stauffer, Jim Jacobsen | 2011-01-11 |