Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7097692 | Air filter arrangement and method of making same | Bryant Eugene Swart | 2006-08-29 |
| 6564886 | Drill bit with rows of cutters mounted to present a serrated cutting edge | Graham Mensa-Wilmot, Carl W. Keith | 2003-05-20 |
| 6353771 | Rapid manufacturing of molds for forming drill bits | — | 2002-03-05 |
| 6244365 | Unplanar non-axisymmetric inserts | — | 2001-06-12 |
| 6164394 | Drill bit with rows of cutters mounted to present a serrated cutting edge | Graham Mensa-Wilmot, Carl W. Keith | 2000-12-26 |
| 6021858 | Drill bit having trapezium-shaped blades | — | 2000-02-08 |
| 5947216 | Cutter assembly for rock bits with back support groove | David Truax, Ghanshyam Rai, Gary R. Portwood | 1999-09-07 |
| 5722499 | Multiple diamond layer polycrystalline diamond composite cutters | David Nguyen, Michael A. Siracki | 1998-03-03 |
| 4852671 | Diamond cutting element | — | 1989-08-01 |
| 4794995 | Orientable fluid nozzle for drill bits | Lawrence W. Matson, Roy Tilford Jackson | 1989-01-03 |