Issued Patents All Time
Showing 26–50 of 68 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8074750 | Earth-boring tools comprising silicon carbide composite materials, and methods of forming same | Heeman Choe, John H. Stevens, Jimmy W. Eason, James C. Westhoff | 2011-12-13 |
| 8047309 | Passive and active up-drill features on fixed cutter earth-boring tools and related systems and methods | Robert J. Buske, Kenneth E. Gilmore, John H. Stevens | 2011-11-01 |
| 8028769 | Reamer with stabilizers for use in a wellbore | Rudolf Carl Pessier, Robert J. Buske | 2011-10-04 |
| 8002052 | Particle-matrix composite drill bits with hardfacing | John H. Stevens, Kenneth E. Gilmore, Jeremy K. Morgan | 2011-08-23 |
| 7997359 | Abrasive wear-resistant hardfacing materials, drill bits and drilling tools including abrasive wear-resistant hardfacing materials | Jimmy W. Eason | 2011-08-16 |
| 7980333 | Bar trimmers on disk bit | Robert J. Buske | 2011-07-19 |
| 7913779 | Earth-boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum-based alloy matrix materials, and methods for forming such bits | Heeman Choe, John H. Stevens, James C. Westhoff, Jimmy W. Eason | 2011-03-29 |
| 7878274 | Steel tooth disk with hardfacing | Robert J. Buske | 2011-02-01 |
| 7866417 | Self sharpening steel tooth cutting structure | Robert J. Buske | 2011-01-11 |
| 7823664 | Corrosion protection for head section of earth boring bit | Alan J. Massey, David K. Luce, Eric C. Sullivan, John F. Bradford, Carmel Zouheir El Hakam +1 more | 2010-11-02 |
| 7807099 | Method for forming earth-boring tools comprising silicon carbide composite materials | Heeman Choe, John H. Stevens, James C. Westhoff, Jimmy W. Eason | 2010-10-05 |
| 7784567 | Earth-boring rotary drill bits including bit bodies comprising reinforced titanium or titanium-based alloy matrix materials, and methods for forming such bits | Heeman Choe, John H. Stevens, James C. Westhoff, Jimmy W. Eason | 2010-08-31 |
| 7703555 | Drilling tools having hardfacing with nickel-based matrix materials and hard particles | — | 2010-04-27 |
| 7677338 | System, method, and apparatus for passive and active updrill features on roller cone drill bits | Robert J. Buske, Jeremy K. Morgan | 2010-03-16 |
| 7654346 | Steel tooth drill bit with improved tooth breakage resistance | Robert J. Buske, Kenneth E. Gilmore, Jeremy K. Morgan | 2010-02-02 |
| 7628230 | Wide groove roller cone bit | Rudolf Carl Pessier, Robert J. Buske, Don Q. Nguyen | 2009-12-08 |
| 7621345 | High density row on roller cone bit | Karlos B. Cepeda, Robert J. Buske, Rolf Carl Pessier | 2009-11-24 |
| 7621347 | Bit leg and cone hardfacing for earth-boring bit | — | 2009-11-24 |
| 7597159 | Drill bits and drilling tools including abrasive wear-resistant materials | — | 2009-10-06 |
| 7549485 | Expandable reamer apparatus for enlarging subterranean boreholes and methods of use | Steven R. Radford, Kelly D. Ireland, Robert A. Laing, Daryl L. Pritchard, Greg W. Presley +3 more | 2009-06-23 |
| 7510034 | System, method, and apparatus for enhancing the durability of earth-boring bits with carbide materials | David A. Curry, Jimmy W. Eason | 2009-03-31 |
| 7484577 | Bit leg outer surface hardfacing on earth-boring bit | Robert J. Buske, John F. Bradford, Caleb A. Rickabaugh | 2009-02-03 |
| 7350600 | Shirttails for reducing damaging effects of cuttings | Christopher C. Beuershausen, Raul E. Lema, Ronald Hales, Don Q. Nguyen, Gregory L. Ricks +6 more | 2008-04-01 |
| 7343990 | Rotary rock bit with hardfacing to reduce cone erosion | Rudolf Carl Pessier, Russell S. Nibogie, Robert J. Buske | 2008-03-18 |
| 7240746 | Bit gage hardfacing | Robert J. Buske, Rudolf Carl Pessier, Jeremy K. Morgan | 2007-07-10 |