Issued Patents All Time
Showing 76–100 of 122 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9016409 | Rolling cutter placement on PDC bits | Michael G. Azar | 2015-04-28 |
| 8991523 | Rolling cutter assembled directly to the bit pockets | Yuelin Shen, Yuri Burhan, Michael A. Siracki, Mahavir Nagaraj, Bala Durairajan +2 more | 2015-03-31 |
| 8950518 | Matrix tool bodies with erosion resistant and/or wear resistant matrix materials | Gregory T. Lockwood, Yuri Burhan | 2015-02-10 |
| 8925422 | Method of manufacturing a drill bit | Gregory T. Lockwood, Yuelin Shen | 2015-01-06 |
| 8925656 | Diamond bonded construction with reattached diamond body | Yuelin Shen | 2015-01-06 |
| 8881849 | Rolling cutter bit design | Yuelin Shen | 2014-11-11 |
| 8875813 | Atomic layer deposition nanocoatings on cutting tool powder materials | Guodong Zhan, Feng Yu, Xian Yao, J. Daniel Belnap, Yuelin Shen +1 more | 2014-11-04 |
| 8869919 | Drag bit with utility blades | Yuelin Shen, Bala Durairajan, Charles H. S. Douglas, III | 2014-10-28 |
| 8852546 | Polycrystalline diamond materials having improved abrasion resistance, thermal stability and impact resistance | Madapusi K. Keshavan, Yuelin Shen, Anthony Griffo, Michael Janssen | 2014-10-07 |
| 8800691 | Rolling cutter | Yuelin Shen, Zhou Yong, Jiaqing Yu, Madapusi K. Keshavan | 2014-08-12 |
| 8752656 | Method of designing a bottom hole assembly and a bottom hole assembly | Yuelin Shen, Madapusi K. Keshavan, Peter Thomas Cariveau | 2014-06-17 |
| 8727043 | Cutter assemblies, downhole tools incorporating such cutter assemblies and methods of making such downhole tools | Yuelin Shen, Yuri Burhan, Gregory T. Lockwood | 2014-05-20 |
| 8702825 | Composite cutter substrate to mitigate residual stress | Yuelin Shen, Jibin Shi, Yuri Burhan, Gregory T. Lockwood | 2014-04-22 |
| 8617274 | Pulsed electrical field assisted or spark plasma sintered polycrystalline ultra hard material and thermally stable ultra hard material cutting elements and compacts and methods of forming the same | Guodong Zhan, Yuelin Shen | 2013-12-31 |
| 8602129 | Matrix body fixed cutter bits | Gregory T. Lockwood | 2013-12-10 |
| 8590130 | Cutting elements with re-processed thermally stable polycrystalline diamond cutting layers, bits incorporating the same, and methods of making the same | Yuelin Shen, Madapusi K. Keshavan | 2013-11-26 |
| 8567534 | Thermally stable polycrystalline diamond cutting elements and bits incorporating the same | Yuelin Shen, Madapusi K. Keshavan, Michael G. Azar | 2013-10-29 |
| 8567531 | Cutting elements, methods for manufacturing such cutting elements, and tools incorporating such cutting elements | J. Daniel Belnap, Georgiy Voronin, Feng Yu, Peter Thomas Cariveau, Yuelin Shen +1 more | 2013-10-29 |
| 8499860 | Cutting elements having cutting edges with continuous varying radii and bits incorporating the same | Yuelin Shen, Michael Janssen | 2013-08-06 |
| 8413746 | Rolling cutter | Yuelin Shen, Zhou Yong, Jiaqing Yu, Madapusi K. Keshavan | 2013-04-09 |
| 8360176 | Brazing methods for PDC cutters | Yuelin Shen, Hong Deng | 2013-01-29 |
| 8347990 | Matrix bit bodies with multiple matrix materials | Gregory T. Lockwood, Yuelin Shen | 2013-01-08 |
| 8328891 | Methods of forming thermally stable polycrystalline diamond cutters | Yuelin Shen | 2012-12-11 |
| 8309050 | Polycrystalline diamond materials having improved abrasion resistance, thermal stability and impact resistance | Madapusi K. Keshavan, Yuelin Shen, Anthony Griffo, Michael Janssen | 2012-11-13 |
| 8157029 | Thermally stable polycrystalline diamond cutting elements and bits incorporating the same | Yuelin Shen, Madapusi K. Keshavan, Michael G. Azar | 2012-04-17 |