Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE40197 | Drill bit having an improved seal and lubrication method using same | Thomas W. Ray | 2008-04-01 |
| 7013998 | Drill bit having an improved seal and lubrication method using same | Thomas W. Ray | 2006-03-21 |
| 6845828 | Shaped cutting-grade inserts with transitionless diamond-enhanced surface layer | — | 2005-01-25 |
| 6469278 | Hardfacing having coated ceramic particles or coated particles of other hard materials | — | 2002-10-22 |
| 6170583 | Inserts and compacts having coated or encrusted cubic boron nitride particles | — | 2001-01-09 |
| 6138779 | Hardfacing having coated ceramic particles or coated particles of other hard materials placed on a rotary cone cutter | — | 2000-10-31 |
| 6102140 | Inserts and compacts having coated or encrusted diamond particles | Michael S. Beaton, Richard David Mittan | 2000-08-15 |
| 5667903 | Method of hard facing a substrate, and weld rod used in hard facing a substrate | — | 1997-09-16 |