Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8881851 | Thermally-stable polycrystalline diamond materials and compacts | John Daniel Belnap, Stewart N. Middlemiss, Anthony Griffo, Thomas W. Oldham | 2014-11-11 |
| 8109177 | Bit body formed of multiple matrix materials and method for making the same | — | 2012-02-07 |
| 7997358 | Bonding of cutters in diamond drill bits | Saul N. Izaguirre, Thomas W. Oldham, Gary Chunn, Anthony Griffo, Robert Denton +1 more | 2011-08-16 |
| 7770672 | Layered hardfacing, durable hardfacing for drill bits | Madapusi K. Keshavan, Alysia C. White, Brian A. White | 2010-08-10 |
| 7661491 | High-strength, high-toughness matrix bit bodies | Thomas W. Oldham | 2010-02-16 |
| 7625521 | Bonding of cutters in drill bits | Saul N. Izaguirre, Thomas W. Oldham, Gary Chunn, Anthony Griffo, Robert Denton +1 more | 2009-12-01 |
| 7473287 | Thermally-stable polycrystalline diamond materials and compacts | John Daniel Belnap, Stewart N. Middlemiss, Anthony Griffo, Thomas W. Oldham | 2009-01-06 |
| 7395884 | High-strength/high toughness alloy steel drill bit blank | Thomas W. Oldham, John (Youhe) Zhang | 2008-07-08 |
| 7389834 | Braze alloys | — | 2008-06-24 |
| 7373997 | Layered hardfacing, durable hardfacing for drill bits | Madapusi K. Keshavan, Alysia C. White, Brian A. White | 2008-05-20 |
| 7267187 | Braze alloy and method of use for drilling applications | — | 2007-09-11 |
| 7250069 | High-strength, high-toughness matrix bit bodies | Thomas W. Oldham | 2007-07-31 |
| 7044243 | High-strength/high-toughness alloy steel drill bit blank | Thomas W. Oldham, John (Youhe) Zhang | 2006-05-16 |
| 6461401 | Composition for binder material particularly for drill bit bodies | Thomas W. Oldham | 2002-10-08 |