Issued Patents All Time
Showing 101–125 of 171 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8496076 | Polycrystalline compacts including nanoparticulate inclusions, cutting elements and earth-boring tools including such compacts, and methods of forming such compacts | Anthony A. DiGiovanni | 2013-07-30 |
| 8377510 | Methods of forming hardfacing materials including PCD particles, and welding rods including such PCD particles | Nicholas J. Lyons | 2013-02-19 |
| 8333814 | Abrasive-impregnated cutting structure having anisotropic wear resistance and drag bit including same | Van Jordan Brackin, Jeffrey B. Lund, Marcus Skeem, Matthew R. Isbell | 2012-12-18 |
| 8292006 | Diamond-enhanced cutting elements, earth-boring tools employing diamond-enhanced cutting elements, and methods of making diamond-enhanced cutting elements | Nicholas J. Lyons | 2012-10-23 |
| 8191658 | Cutting elements having different interstitial materials in multi-layer diamond tables, earth-boring tools including such cutting elements, and methods of forming same | Kurtis Schmitz | 2012-06-05 |
| 8079428 | Hardfacing materials including PCD particles, welding rods and earth-boring tools including such materials, and methods of forming and using same | Nicholas J. Lyons | 2011-12-20 |
| 8069936 | Encapsulated diamond particles, materials and impregnated diamond earth-boring bits including such particles, and methods of forming such particles, materials, and bits | Wesley Dean Fuller | 2011-12-06 |
| 8061456 | Chamfered edge gage cutters and drill bits so equipped | Suresh G. Patel, L. Allen Sinor | 2011-11-22 |
| 7836978 | Cutting elements for casing component drill out and subterranean drilling, earth boring drag bits and tools including same and methods of use | — | 2010-11-23 |
| 7497280 | Abrasive-impregnated cutting structure having anisotropic wear resistance and drag bit including same | Van Jordan Brackin, Jeffrey B. Lund, Marcus Skeem, Matthew R. Isbell | 2009-03-03 |
| 7311159 | PCD face seal for earth-boring bit | Chih Lin, Terry J. Koltermann | 2007-12-25 |
| 7243745 | Cutting elements and rotary drill bits including same | Marcus Skeem, Jeffrey B. Lund | 2007-07-17 |
| 7234541 | DLC coating for earth-boring bit seal ring | Chih Lin, Aaron J. Dick | 2007-06-26 |
| 7188692 | Superabrasive cutting elements having enhanced durability, method of producing same, and drill bits so equipped | Jeffrey B. Lund, Marcus Skeem | 2007-03-13 |
| 6986297 | Method of manufacturing PDC cutters with chambers or passages | — | 2006-01-17 |
| 6935444 | Superabrasive cutting elements with cutting edge geometry having enhanced durability, method of producing same, and drill bits so equipped | Jeffrey B. Lund, Marcus Skeem | 2005-08-30 |
| 6872356 | Method of forming polycrystalline diamond cutters having modified residual stresses | Trent N. Butcher, Ralph M. Horton, Stephen R. Jurewicz, Redd H. Smith | 2005-03-29 |
| 6739417 | Superabrasive cutters and drill bits so equipped | Redd H. Smith, Craig H. Cooley, Marcus Skeem | 2004-05-25 |
| 6684966 | PCD face seal for earth-boring bit | Chih Lin, Terry J. Koltermann | 2004-02-03 |
| 6655234 | Method of manufacturing PDC cutter with chambers or passages | — | 2003-12-02 |
| 6571891 | Web cutter | Redd H. Smith, Craig H. Cooley, Marcus Skeem | 2003-06-03 |
| 6521174 | Method of forming polycrystalline diamond cutters having modified residual stresses | Trent N. Butcher, Ralph M. Horton, Stephen R. Jurewicz, Redd H. Smith | 2003-02-18 |
| 6499547 | Multiple grade carbide for diamond capped insert | Marcus Skeem | 2002-12-31 |
| 6450271 | Surface modifications for rotary drill bits | Gordon A. Tibbitts, James L. Overstreet, Terry J. Kolterman, Chih Lin, James Andy Oxford +1 more | 2002-09-17 |
| 6374704 | Steel-tooth bit with improved toughness | James L. Overstreet, Anton F. Zahradnik | 2002-04-23 |