Issued Patents All Time
Showing 51–68 of 68 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7182162 | Shirttails for reducing damaging effects of cuttings | Christopher C. Beuershausen, Raul E. Lema, Ronald Hales, Don Q. Nguyen, Gregory L. Ricks +6 more | 2007-02-27 |
| 6923276 | Streamlined mill-toothed cone for earth boring bit | Rudolf Carl Pessier, Alan J. Massey, Jeremy K. Morgan | 2005-08-02 |
| 6766870 | Mechanically shaped hardfacing cutting/wear structures | — | 2004-07-27 |
| 6651756 | Steel body drill bits with tailored hardfacing structural elements | Robert J. Costo, Jr., Anton F. Zahradnik, James L. Duggan, Russel S. Smith, Mark E. Morris | 2003-11-25 |
| 6450271 | Surface modifications for rotary drill bits | Gordon A. Tibbitts, Danny E. Scott, Terry J. Kolterman, Chih Lin, James Andy Oxford +1 more | 2002-09-17 |
| 6374704 | Steel-tooth bit with improved toughness | Danny E. Scott, Anton F. Zahradnik | 2002-04-23 |
| 6371225 | Drill bit and surface treatment for tungsten carbide insert | Anil Kumar | 2002-04-16 |
| 6360832 | Hardfacing with multiple grade layers | Ronald L. Jones, Alan J. Massey, Mary K. Adams | 2002-03-26 |
| 6253862 | Earth-boring bit with cutter spear point hardfacing | Ronald L. Jones, Alan J. Massey, Trevor M. McAninch, Jeremy K. Morgan | 2001-07-03 |
| 6248149 | Hardfacing composition for earth-boring bits using macrocrystalline tungsten carbide and spherical cast carbide | Alan J. Massey | 2001-06-19 |
| RE37127 | Hardfacing composition for earth-boring bits | Kevin W. Schader, Alan J. Massey, Ronald L. Jones, Danny E. Scott | 2001-04-10 |
| 6206115 | Steel tooth bit with extra-thick hardfacing | Ronald L. Jones, Jeremy K. Morgan, Trevor M. McAninch | 2001-03-27 |
| 6065552 | Cutting elements with binderless carbide layer | Danny E. Scott | 2000-05-23 |
| 5979575 | Hybrid rock bit | Robert E. Grimes, Brian Baker, Matthew J. Meiners | 1999-11-09 |
| 5954147 | Earth boring bits with nanocrystalline diamond enhanced elements | Danny E. Scott | 1999-09-21 |
| 5791423 | Earth-boring bit having an improved hard-faced tooth structure | Ronald L. Jones | 1998-08-11 |
| 5663512 | Hardfacing composition for earth-boring bits | Kevin W. Schader, Ronald L. Jones, Danny E. Scott, Mou-Chih Lu, Alan J. Massey | 1997-09-02 |
| 5492186 | Steel tooth bit with a bi-metallic gage hardfacing | Ronald L. Jones, Alan J. Massey | 1996-02-20 |