Issued Patents All Time
Showing 51–62 of 62 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7828088 | Thermally stable ultra-hard material compact construction | Stewart N. Middlemiss, Nephi M. Mourik, Thomas W. Oldham, Anthony Griffo | 2010-11-09 |
| 7757793 | Thermally stable polycrystalline ultra-hard constructions | Georgiy Voronin | 2010-07-20 |
| 7543662 | Stress-relieved diamond inserts | Lynn Belnap, Christopher A. Tucker | 2009-06-09 |
| 7470341 | Method of manufacturing a cutting element from a partially densified substrate | Madapusi K. Keshavan, Dave Slutz | 2008-12-30 |
| 7441610 | Ultrahard composite constructions | Anthony Griffo, Ronald K. Eyre, Stewart N. Middlemiss | 2008-10-28 |
| 7377341 | Thermally stable ultra-hard material compact construction | Stewart N. Middlemiss, Nephi M. Mourik, Thomas W. Oldham, Anthony Griffo | 2008-05-27 |
| 7152701 | Cutting element structure for roller cone bit | Richard Butland, John James Herman, Ronald Birne-Browne, Per Ivar Nese, Louis Loiselle | 2006-12-26 |
| 6484826 | Engineered enhanced inserts for rock drilling bits | Nathan R. Anderson, Chris E. Cawthorne, Ronald K. Eyre, Madapusi K. Keshavan, Per Ivar Nese +2 more | 2002-11-26 |
| 6460637 | Engineered enhanced inserts for rock drilling bits | Michael A. Siracki, Chris E. Cawthorne, Per Ivar Nese, Madapusi K. Keshavan, Ronald K. Eyre +1 more | 2002-10-08 |
| 6460636 | Drill bit inserts with variations in thickness of diamond coating | Zhou Yong, Suprant J. Huang, Nathan R. Anderson, Chris E. Cawthorne, Ronald K. Eyre +4 more | 2002-10-08 |
| 6419034 | Engineered enhanced inserts for rock drilling bits | Ronald K. Eyre, Michael A. Siracki, Per Ivar Nese, Madapusi K. Keshavan, Nathan R. Anderson | 2002-07-16 |
| 6199645 | Engineered enhanced inserts for rock drilling bits | Nathan R. Anderson, Chris E. Cawthorne, Ronald K. Eyre, Madapusi K. Keshavan, Per Ivar Nese +2 more | 2001-03-13 |