Issued Patents All Time
Showing 101–122 of 122 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8113303 | Modified cutters and a method of drilling with modified cutters | Yuelin Shen | 2012-02-14 |
| 8096372 | Cutter geometry for increased bit life and bits incorporating the same | Yuelin Shen, Sujian Huang, Peter Thomas Cariveau | 2012-01-17 |
| 8091655 | Rolling cutter | Yuelin Shen, Zhou Yong, Jiaqing Yu, Madapusi K. Keshavan | 2012-01-10 |
| 8066087 | Thermally stable ultra-hard material compact constructions | Anthony Griffo, Madapusi K. Keshavan, Yuelin Shen, Michael Janssen | 2011-11-29 |
| 8037951 | Cutter having shaped working surface with varying edge chamfer | Yuelin Shen, Steffen S. Kristiansen | 2011-10-18 |
| 8028771 | Polycrystalline diamond constructions having improved thermal stability | Madapusi K. Keshavan, Anthony Griffo, Yuelin Shen | 2011-10-04 |
| 7946363 | Thermally stable polycrystalline diamond cutting elements and bits incorporating the same | Yuelin Shen, Madapusi K. Keshavan, Michael G. Azar | 2011-05-24 |
| 7926596 | Drag bit with utility blades | Yuelin Shen | 2011-04-19 |
| 7878275 | Matrix bit bodies with multiple matrix materials | Gregory T. Lockwood, Yuelin Shen | 2011-02-01 |
| 7861808 | Cutter for maintaining edge sharpness | Yuelin Shen | 2011-01-04 |
| 7862634 | Polycrystalline composites reinforced with elongated nanostructures | J. Daniel Belnap, Guodong Zhan, Xiayang Sheng, Madapusi K. Keshavan, Harry H. Pratt +1 more | 2011-01-04 |
| 7836981 | Thermally stable polycrystalline diamond cutting elements and bits incorporating the same | Yuelin Shen, Madapusi K. Keshavan, Michael G. Azar | 2010-11-23 |
| 7798257 | Shaped cutter surface | Yuelin Shen, Zhou Yong | 2010-09-21 |
| 7757785 | Modified cutters and a method of drilling with modified cutters | Yuelin Shen | 2010-07-20 |
| 7726420 | Cutter having shaped working surface with varying edge chamfer | Yuelin Shen, Steffen S. Kristiansen | 2010-06-01 |
| 7717199 | Cutting elements and bits incorporating the same | Zan Svendsen, Yuelin Shen | 2010-05-18 |
| 7703559 | Rolling cutter | Yuelin Shen, Zhou Yong, Jiaqing Yu, Madapusi K. Keshavan | 2010-04-27 |
| 7533740 | Thermally stable polycrystalline diamond cutting elements and bits incorporating the same | Yuelin Shen, Madapusi K. Keshavan, Mike Azar | 2009-05-19 |
| 7493973 | Polycrystalline diamond materials having improved abrasion resistance, thermal stability and impact resistance | Madapusi K. Keshavan, Yuelin Shen, Anthony Griffo, Michael Janssen | 2009-02-24 |
| 7287610 | Cutting elements and bits incorporating the same | Zan Svendsen, Yuelin Shen | 2007-10-30 |
| 7159487 | Method for making a polycrystalline diamond insert drill bit body | Graham Mensa-Wilmot, Tommy G. Ray | 2007-01-09 |
| 6823952 | Structure for polycrystalline diamond insert drill bit body | Graham Mensa-Wilmot, Tommy G. Ray | 2004-11-30 |