Issued Patents All Time
Showing 51–75 of 83 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8535400 | Techniques and materials for the accelerated removal of catalyst material from diamond bodies | J. Daniel Belnap, Anthony Griffo, Loel Corbett, Yahua Bao, Gerald Demenna | 2013-09-17 |
| 8453767 | Angular offset PDC cutting structures | — | 2013-06-04 |
| 8353370 | Polycrystalline diamond cutting element structure | Federico Bellin, Yi Fang, Michael Stewart, Nephi M. Mourik | 2013-01-15 |
| 8185366 | Methods for modeling, displaying, designing, and optimizing fixed cutter bits | Sujian Huang | 2012-05-22 |
| 8112258 | PDC drill bit using optimized side rake angle | Bala Durairajan, Sujian Huang | 2012-02-07 |
| 8096372 | Cutter geometry for increased bit life and bits incorporating the same | Yuelin Shen, Youhe Zhang, Sujian Huang | 2012-01-17 |
| 8061453 | Drill bit with asymmetric gage pad configuration | Bala Durairajan | 2011-11-22 |
| 7942219 | Polycrystalline diamond constructions having improved thermal stability | Madapusi K. Keshavan, Ronald K. Eyre, Anthony Griffo | 2011-05-17 |
| 7831419 | PDC drill bit with cutter design optimized with dynamic centerline analysis having an angular separation in imbalance forces of 180 degrees for maximum time | Bala Durairajan, Sujian Huang | 2010-11-09 |
| 7693695 | Methods for modeling, displaying, designing, and optimizing fixed cutter bits | Sujian Huang | 2010-04-06 |
| 7441612 | PDC drill bit using optimized side rake angle | Bala Durairajan, Sujian Huang | 2008-10-28 |
| 7387178 | Self relieving seal | James L. Neville, James L. Larsen, Steven W. Peterson, Manikiran Bandi, Alan W. Lockstedt +3 more | 2008-06-17 |
| 7373998 | Cutting element with improved cutter to blade transition | Thomas B. White | 2008-05-20 |
| 7308957 | Fixed-head bit with stabilizing features | Bala Durairajan, Sujian Huang | 2007-12-18 |
| 7201241 | Self relieving seal | James L. Neville, James L. Larsen, Steven W. Peterson, Manikiran Bandi, Alan W. Lockstedt +3 more | 2007-04-10 |
| 7137460 | Back reaming tool | Robert H. Slaughter, Jr., Vincent Shotton | 2006-11-21 |
| 6976548 | Self relieving seal | James L. Neville, James L. Larsen, Steven W. Peterson, Manikiran Bandi, Alan W. Lockstedt +3 more | 2005-12-20 |
| 6729418 | Back reaming tool | Robert H. Slaughter, Jr., Vincent Shotton | 2004-05-04 |
| 6708786 | Mounting attachment and bearing system for an industrial earth-boring cutter | Vincent Shotton | 2004-03-23 |
| 6695079 | Dual-seal drill bit pressure communication system | Gary R. Portwood, Chris E. Cawthorne, Robert H. Slaughter, Jr., Roger Didericksen, Robert Denton | 2004-02-24 |
| 6679342 | Dual-seal drill bit pressure communication system | Gary R. Portwood, Chris E. Cawthorne, Robert Denton, Robert H. Slaughter, Jr., Roger Didericksen | 2004-01-20 |
| 6619412 | Protected lubricant reservoir for sealed earth boring drill bit | Robert H. Slaughter, Jr., Kirk A. Norris, Roger Didericksen, William M. Conn | 2003-09-16 |
| 6446739 | Rock drill bit with neck protection | Lance Richman | 2002-09-10 |
| 6431293 | Dual-seal drill bit pressure communication system | Gary R. Portwood, Chris E. Cawthorne, Robert H. Slaughter, Jr., Roger Didericksen, Robert Denton | 2002-08-13 |
| 6408957 | Sealed bearing roller cone bit having anti-plugging device | Robert H. Slaughter, Jr., Fakhroldin Mohammad Jadbabaei, Vincent Shotton, Roger Didericksen | 2002-06-25 |