Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10590704 | High strength corrosion resistant high velocity oxy fuel (HVOF) coating for downhole tools | Harold A. Sreshta, Rajagopala N. Pillai | 2020-03-17 |
| 10570667 | Polycrystalline diamond cutting element | Deepthi Raj Setlur, Michael Dean Hughes, Mark Jonathan Francis, Harold A. Sreshta, Guodong Zhan +1 more | 2020-02-25 |
| 9976357 | Fixed cutter drill bit with flow guide | Ali Akbar Moslemi | 2018-05-22 |
| 9909395 | Wellsite hardfacing with distributed hard phase and method of using same | Ying Wang | 2018-03-06 |
| 9662769 | Multi-layered PDC cutters | — | 2017-05-30 |
| 9604345 | Hard-facing for downhole tools and matrix bit bodies with enhanced wear resistance and fracture toughness | Ying Wang, Wesley Craig Arceneaux, Sr., Harold A. Sreshta | 2017-03-28 |
| 9382596 | Laser cladding Fe—Cr alloy on downhole tools | Raju Pillai, Parul Walia Dhall | 2016-07-05 |
| 9309767 | Reinforced stators and fabrication methods | Harold A. Sreshta, Stefan M. Butuc, Jan Edgar Marshall | 2016-04-12 |
| 8997900 | In-situ boron doped PDC element | Harold A. Sreshta | 2015-04-07 |
| 8944789 | Enhanced elastomeric stator insert via reinforcing agent distribution and orientation | Stefan M. Butuc, Harold A. Sreshta, Joshua Alan Sicilian | 2015-02-03 |
| 8919463 | Polycrystalline diamond cutting element | Deepthi Raj Setlur, Michael Dean Hughes, Mark Jonathan Francis, Harold A. Sreshta, Guodong Zhan +1 more | 2014-12-30 |
| 8858733 | Laser hardened surface for wear and corrosion resistance | Raju Pillai, Unnikrishnan C. Vasudevan | 2014-10-14 |
| 8535408 | High thermal conductivity hardfacing | Harold A. Sreshta, Rajagopala N. Pillai | 2013-09-17 |
| 7237628 | Fixed cutter drill bit with non-cutting erosion resistant inserts | Neerali Janubhai Desai | 2007-07-03 |
| 6029759 | Hardfacing on steel tooth cutter element | James C. Minikus, Zhigang Fang | 2000-02-29 |
| 6025021 | Multilayer coating of a nitride-containing compound and method for producing it | — | 2000-02-15 |
| 6007922 | Chromium boride coatings | Robert C. Tucker, Jr., Joseph Patrick Nemeth | 1999-12-28 |
| 5981081 | Transition metal boride coatings | — | 1999-11-09 |
| 5966585 | Titanium carbide/tungsten boride coatings | — | 1999-10-12 |
| 5944127 | Hardfacing material for rock bits | Dah-Ben Liang, Alysia C. White, Zhigang Fang | 1999-08-31 |
| 5921330 | Rock bit with wear-and fracture-resistant hardfacing | Zhlgang Fang, Alysia C. White | 1999-07-13 |
| 5837327 | Method for producing a TiB.sub.2 -based coating | Robert C. Tucker, Jr., Antony John Stavros | 1998-11-17 |
| 5791422 | Rock bit with hardfacing material incorporating spherical cast carbide particles | Dah-Ben Liang, Alysia C. White, Zhigang Fang | 1998-08-11 |
| 5290362 | Striping process for stripping compounds of titanium from base metals | — | 1994-03-01 |
| 5242753 | Substoichiometric zirconium nitride coating | Harden H. Troue | 1993-09-07 |