Issued Patents All Time
Showing 26–50 of 67 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7845059 | Method of forming impregnated diamond cutting structures | Gregory T. Lockwood, Thomas W. Oldham, 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, Thomas W. Oldham | 2010-11-09 |
| 7757788 | Ultrahard composite constructions | John Daniel Belnap, Ronald K. Eyre, Stewart N. Middlemiss | 2010-07-20 |
| 7754333 | Thermally stable diamond polycrystalline diamond constructions | Ronald K. Eyre, Thomas W. Oldham | 2010-07-13 |
| 7749947 | High performance rock bit grease | Madapusi K. Keshavan | 2010-07-06 |
| 7666244 | Hardfacing milled-tooth drill bits using super dense carbide pellets | Gregory T. Lockwood, Dah-Ben Liang, Alysia C. White | 2010-02-23 |
| 7647992 | Polycrystalline diamond carbide composites | Zhigang Fang, Brian A. White, Stewart N. Middlemiss, Ron K. Eyre | 2010-01-19 |
| 7625521 | Bonding of cutters in drill bits | Saul N. Izaguirre, Thomas W. Oldham, Kumar T. Kembaiyan, Gary Chunn, Robert Denton +1 more | 2009-12-01 |
| 7543661 | Roller cone bits with wear and fracture resistant surface | Gregory T. Lockwood, Mohammed Boudrare, Jiaqing Yu | 2009-06-09 |
| 7493973 | Polycrystalline diamond materials having improved abrasion resistance, thermal stability and impact resistance | Madapusi K. Keshavan, Youhe Zhang, Yuelin Shen, Michael Janssen | 2009-02-24 |
| 7475743 | High-strength, high-toughness matrix bit bodies | Dah-Ben Liang, Thomas W. Oldham, Gregory T. Lockwood | 2009-01-13 |
| 7473287 | Thermally-stable polycrystalline diamond materials and compacts | John Daniel Belnap, Stewart N. Middlemiss, Thomas W. Oldham, Kumar T. Kembaiyan | 2009-01-06 |
| 7441610 | Ultrahard composite constructions | J. Daniel Belnap, Ronald K. Eyre, Stewart N. Middlemiss | 2008-10-28 |
| 7416035 | Shaped inserts with increased retention force | Ramamurthy Viswanadham, Lance Richman, Chris E. Cawthorne | 2008-08-26 |
| 7407012 | Thermally stable diamond cutting elements in roller cone drill bits | Madapusi K. Keshavan | 2008-08-05 |
| 7392865 | Randomly-oriented composite constructions | — | 2008-07-01 |
| 7387178 | Self relieving seal | James L. Neville, James L. Larsen, Steven W. Peterson, Manikiran Bandi, Alan W. Lockstedt +3 more | 2008-06-17 |
| 7377341 | Thermally stable ultra-hard material compact construction | Stewart N. Middlemiss, J. Daniel Belnap, Nephi M. Mourik, Thomas W. Oldham | 2008-05-27 |
| 7350599 | Impregnated diamond cutting structures | Greg Lockwood, Thomas W. Oldham, Madapusi K. Keshavan, David A. Conroy | 2008-04-01 |
| 7303030 | Barrier coated granules for improved hardfacing material | Greg Lockwood, Ramamurthy Viswanadham | 2007-12-04 |
| 7258177 | Fracture and wear resistant compounds and rock bits | Dah-Ben Liang | 2007-08-21 |
| 7243744 | Randomly-oriented composite constructions | — | 2007-07-17 |
| 7235211 | Rotary cone bit with functionally-engineered composite inserts | Zhigang Fang, Robert Denton | 2007-06-26 |
| 7229077 | Ordered elastomeric composite material | Madapusi K. Keshavan, Alysia C. White, Robert Denton, Patricia Heel, Leroy N. Tinkham +1 more | 2007-06-12 |
| 7210377 | Cone erosion protection for roller cone drill bits | Zhigang Fang, Robert H. Slaughter, Jr. | 2007-05-01 |