Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12031384 | Cutting elements having non-planar surfaces and downhole cutting tools using such cutting elements | Chen Chen, Huimin Song, Liang Zhao, Youhe Zhang, Michael G. Azar +4 more | 2024-07-09 |
| 11215012 | Cutting elements having non-planar surfaces and downhole cutting tools using such cutting elements | Chen Chen, Huimin Song, Liang Zhao, Youhe Zhang, Michael G. Azar +4 more | 2022-01-04 |
| 10309156 | Cutting structures for fixed cutter drill bit and other downhole cutting tools | Michael G. Azar, Madapusi K. Keshavan | 2019-06-04 |
| 10287825 | Cutting elements having non-planar surfaces and downhole cutting tools using such cutting elements | Chen Chen, Huimin Song, Liang Zhao, Youhe Zhang, Michael G. Azar +4 more | 2019-05-14 |
| 10030452 | Cutting structures for fixed cutter drill bit and other downhole cutting tools | Michael G. Azar, Madapusi K. Keshavan | 2018-07-24 |
| 9617794 | Feature to eliminate shale packing/shale evacuation channel | Rahul Bijai, Sandeep Tammineni, William P. Moore, Ehren Long | 2017-04-11 |
| 9404312 | Cutting structures for fixed cutter drill bit and other downhole cutting tools | Michael G. Azar, Madapusi K. Keshavan | 2016-08-02 |
| 9366090 | Kerfing hybrid drill bit and other downhole cutting tools | Michael G. Azar, Madapusi K. Keshavan | 2016-06-14 |
| 9145740 | Stabilizing members for fixed cutter drill bit | Dwayne P. Terracina | 2015-09-29 |
| 9103170 | Impregnated drill bit | Jonan Fulenchek, Gregory T. Lockwood | 2015-08-11 |
| 9016407 | Drill bit cutting structure and methods to maximize depth-of-cut for weight on bit applied | Carl M. Hoffmaster, Michael G. Azar | 2015-04-28 |
| 8991523 | Rolling cutter assembled directly to the bit pockets | Yuelin Shen, Youhe Zhang, Yuri Burhan, Michael A. Siracki, Mahavir Nagaraj +2 more | 2015-03-31 |
| 8887837 | Cutting structures for fixed cutter drill bit and other downhole cutting tools | Michael G. Azar, Madapusi K. Keshavan | 2014-11-18 |
| 8869919 | Drag bit with utility blades | Yuelin Shen, Youhe Zhang, Charles H. S. Douglas, III | 2014-10-28 |
| 8833492 | Cutters for fixed cutter bits | Carl M. Hoffmaster | 2014-09-16 |
| 8783386 | Stabilizing members for fixed cutter drill bit | Dwayne P. Terracina | 2014-07-22 |
| 8783387 | Cutter geometry for high ROP applications | Carl M. Hoffmaster | 2014-07-22 |
| 8689908 | Drill bit having enhanced stabilization features and method of use thereof | Carl M. Hoffmaster, Rolando Descarpontriez Arteaga | 2014-04-08 |
| 8127863 | Drill bit having enhanced stabilization features and method of use thereof | Carl M. Hoffmaster, Rolando Descarpontriez Arteaga | 2012-03-06 |
| 8112258 | PDC drill bit using optimized side rake angle | Peter Thomas Cariveau, Sujian Huang | 2012-02-07 |
| 8100202 | Fixed cutter bit with backup cutter elements on secondary blades | Carl M. Hoffmaster, Michael G. Azar, Kurt T. Bush | 2012-01-24 |
| 8061453 | Drill bit with asymmetric gage pad configuration | Peter Thomas Cariveau | 2011-11-22 |
| 7831419 | PDC drill bit with cutter design optimized with dynamic centerline analysis having an angular separation in imbalance forces of 180 degrees for maximum time | Peter Thomas Cariveau, Sujian Huang | 2010-11-09 |
| 7703557 | Fixed cutter bit with backup cutter elements on primary blades | Carl M. Hoffmaster, Charles H. S. Douglas, III, Dennis Cisneros | 2010-04-27 |
| 7441612 | PDC drill bit using optimized side rake angle | Peter Thomas Cariveau, Sujian Huang | 2008-10-28 |