Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6458471 | Reinforced abrasive-impregnated cutting elements, drill bits including same and methods | Gordon A. Tibbitts | 2002-10-01 |
| 6241036 | Reinforced abrasive-impregnated cutting elements, drill bits including same | Gordon A. Tibbitts | 2001-06-05 |
| 6089123 | Structure for use in drilling a subterranean formation | Jacob Chow, Sidney L. Findley, David P. Beacco | 2000-07-18 |
| 6073518 | Bit manufacturing method | Jacob Chow, Sidney L. Findley, David P. Beacco | 2000-06-13 |
| 5090491 | Earth boring drill bit with matrix displacing material | Gordon A. Tibbitts, Ralph M. Horton | 1992-02-25 |
| 4567954 | Replaceable nozzles for insertion into a drilling bit formed by powder metallurgical techniques and a method for manufacturing the same | Robert W. Voight, III, Jerry L. Robin, Robert J. Balkenbush, Joseph D. McDermaid | 1986-02-04 |