Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7770672 | Layered hardfacing, durable hardfacing for drill bits | Kumar T. Kembaiyan, Madapusi K. Keshavan, Brian A. White | 2010-08-10 |
| 7666244 | Hardfacing milled-tooth drill bits using super dense carbide pellets | Gregory T. Lockwood, Anthony Griffo, Dah-Ben Liang | 2010-02-23 |
| 7387178 | Self relieving seal | James L. Neville, James L. Larsen, Steven W. Peterson, Manikiran Bandi, Alan W. Lockstedt +3 more | 2008-06-17 |
| 7373997 | Layered hardfacing, durable hardfacing for drill bits | Kumar T. Kembaiyan, Madapusi K. Keshavan, Brian A. White | 2008-05-20 |
| 7267183 | Drill bit lubricant with enhanced load carrying/anti wear properties | Robert Denton, Alan W. Lockstedt | 2007-09-11 |
| 7229077 | Ordered elastomeric composite material | Madapusi K. Keshavan, Anthony Griffo, Robert Denton, Patricia Heel, Leroy N. Tinkham +1 more | 2007-06-12 |
| 7201241 | Self relieving seal | James L. Neville, James L. Larsen, Steven W. Peterson, Manikiran Bandi, Alan W. Lockstedt +3 more | 2007-04-10 |
| 6976548 | Self relieving seal | James L. Neville, James L. Larsen, Steven W. Peterson, Manikiran Bandi, Alan W. Lockstedt +3 more | 2005-12-20 |
| 6782958 | Hardfacing for milled tooth drill bits | Dah-Ben Liang, Greg Lockwood, Anthony Griffo | 2004-08-31 |
| 6659206 | Hardfacing composition for rock bits | Dah-Ben Liang | 2003-12-09 |
| 6615935 | Roller cone bits with wear and fracture resistant surface | Zhigang Fang, Anthony Griffo, Chris E. Cawthorne | 2003-09-09 |
| 6615936 | Method for applying hardfacing to a substrate and its application to construction of milled tooth drill bits | Nephi M. Mourik, J. Albert Sue | 2003-09-09 |
| 6607835 | Composite constructions with ordered microstructure | Zhigang Fang, Anthony Griffo | 2003-08-19 |
| 6478887 | Boronized wear-resistant materials and methods thereof | J. Albert Sue, Zhigang Fang | 2002-11-12 |
| 6392190 | Automated hardfacing system | J. Albert Sue, Zhigang Azk Fang | 2002-05-21 |
| 6124564 | Hardfacing compositions and hardfacing coatings formed by pulsed plasma-transferred arc | J. Albert Sue, Zhigang Fang | 2000-09-26 |
| 5944127 | Hardfacing material for rock bits | Dah-Ben Liang, Zhigang Fang, Jiinjen Albert Sue | 1999-08-31 |
| 5921330 | Rock bit with wear-and fracture-resistant hardfacing | Jiinjen Albert Sue, Zhlgang Fang | 1999-07-13 |
| 5791422 | Rock bit with hardfacing material incorporating spherical cast carbide particles | Dah-Ben Liang, Zhigang Fang, Jiinjen Albert Sue | 1998-08-11 |
| 5715899 | Hard facing material for rock bits | Dah-Ben Liang, Madapusi K. Keshavan | 1998-02-10 |