Issued Patents All Time
Showing 25 most recent of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10350731 | Thermally stable diamond polycrystalline diamond constructions | Ronald K. Eyre, Anthony Griffo | 2019-07-16 |
| 9145739 | Fixed cutter drill bit for abrasive applications | Carl M. Hoffmaster, Shelton W. Alsup, Michael G. Azar, Stuart Oliver, Sidney J. Isnor | 2015-09-29 |
| 8881851 | Thermally-stable polycrystalline diamond materials and compacts | John Daniel Belnap, Stewart N. Middlemiss, Anthony Griffo, Kumar T. Kembaiyan | 2014-11-11 |
| 8562703 | Thermally stable diamond polycrystalline diamond constructions | Ronald K. Eyre, Anthony Griffo | 2013-10-22 |
| 8235149 | Diamond bit steel body cutter pocket protection | Alan W. Lockstedt | 2012-08-07 |
| 8147572 | Thermally stable diamond polycrystalline diamond constructions | Ronald K. Eyre, Anthony Griffo | 2012-04-03 |
| 8056650 | Thermally stable ultra-hard material compact construction | Stewart N. Middlemiss, J. Daniel Belnap, Nephi M. Mourik, Anthony Griffo | 2011-11-15 |
| 7997358 | Bonding of cutters in diamond drill bits | Saul N. Izaguirre, Kumar T. Kembaiyan, Gary Chunn, Anthony Griffo, Robert Denton +1 more | 2011-08-16 |
| 7845059 | Method of forming impregnated diamond cutting structures | Gregory T. Lockwood, Anthony Griffo, Madapusi K. Keshavan, David A. Conroy | 2010-12-07 |
| 7828088 | Thermally stable ultra-hard material compact construction | Stewart N. Middlemiss, J. Daniel Belnap, Nephi M. Mourik, Anthony Griffo | 2010-11-09 |
| 7798256 | Fixed cutter drill bit for abrasive applications | Carl M. Hoffmaster, Shelton W. Alsup, Michael G. Azar, Stuart Oliver, Sidney J. Isnor | 2010-09-21 |
| 7754333 | Thermally stable diamond polycrystalline diamond constructions | Ronald K. Eyre, Anthony Griffo | 2010-07-13 |
| 7661491 | High-strength, high-toughness matrix bit bodies | Kumar T. Kembaiyan | 2010-02-16 |
| 7644786 | Diamond bit steel body cutter pocket protection | Alan W. Lockstedt | 2010-01-12 |
| 7625521 | Bonding of cutters in drill bits | Saul N. Izaguirre, Kumar T. Kembaiyan, Gary Chunn, Anthony Griffo, Robert Denton +1 more | 2009-12-01 |
| 7475743 | High-strength, high-toughness matrix bit bodies | Dah-Ben Liang, Anthony Griffo, Gregory T. Lockwood | 2009-01-13 |
| 7473287 | Thermally-stable polycrystalline diamond materials and compacts | John Daniel Belnap, Stewart N. Middlemiss, Anthony Griffo, Kumar T. Kembaiyan | 2009-01-06 |
| 7395884 | High-strength/high toughness alloy steel drill bit blank | Kumar T. Kembaiyan, John (Youhe) Zhang | 2008-07-08 |
| 7377341 | Thermally stable ultra-hard material compact construction | Stewart N. Middlemiss, J. Daniel Belnap, Nephi M. Mourik, Anthony Griffo | 2008-05-27 |
| 7350599 | Impregnated diamond cutting structures | Greg Lockwood, Anthony Griffo, Madapusi K. Keshavan, David A. Conroy | 2008-04-01 |
| 7250069 | High-strength, high-toughness matrix bit bodies | Kumar T. Kembaiyan | 2007-07-31 |
| 7044243 | High-strength/high-toughness alloy steel drill bit blank | Kumar T. Kembaiyan, John (Youhe) Zhang | 2006-05-16 |
| 6772849 | Protective overlay coating for PDC drill bits | Kumarj T. Kembaiyan | 2004-08-10 |
| 6725953 | Drill bit having diamond impregnated inserts primary cutting structure | David Truax, Carl Edward Penuel, Duane R. Van Waes | 2004-04-27 |
| 6461401 | Composition for binder material particularly for drill bit bodies | Kumar T. Kembaiyan | 2002-10-08 |