Issued Patents All Time
Showing 1–25 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11400533 | Carbide wear surface and method of manufacture | Thomas M. Dennis, Richard W. Lewis | 2022-08-02 |
| 10384284 | Carbide wear surface and method of manufacture | Thomas M. Dennis, Richard W. Lewis | 2019-08-20 |
| 8602133 | Tool with welded cemented metal carbide inserts welded to steel and/or cemented metal carbide | — | 2013-12-10 |
| 7712549 | Drilling tool | Thomas M. Dennis, Eric M. Twardowski | 2010-05-11 |
| 6500226 | Method and apparatus for fabrication of cobalt alloy composite inserts | — | 2002-12-31 |
| 6488103 | Drilling tool and method of using same | Thomas M. Dennis, Eric M. Twardowski | 2002-12-03 |
| 6315066 | Microwave sintered tungsten carbide insert featuring thermally stable diamond or grit diamond reinforcement | — | 2001-11-13 |
| 6126895 | Process and apparatus for the preparation of particulate or solid parts | Dinesh Agrawal, Rustum Roy, Jiping Cheng, Paul D. Gigl | 2000-10-03 |
| 6066290 | Method and apparatus for transporting green work pieces through a microwave sintering system | Rustum Roy, Dinesh Agrawal, Paul D. Gigl | 2000-05-23 |
| 6063333 | Method and apparatus for fabrication of cobalt alloy composite inserts | — | 2000-05-16 |
| 6011248 | Method and apparatus for fabrication and sintering composite inserts | — | 2000-01-04 |
| 6004505 | Process and apparatus for the preparation of particulate or solid parts | Rustum Roy, Dinesh Agrawal, Jiping Cheng, Paul D. Gigil | 1999-12-21 |
| 5848348 | Method for fabrication and sintering composite inserts | — | 1998-12-08 |
| 5816347 | PDC clad drill bit insert | Eric M. Twardowski | 1998-10-06 |
| 5709279 | Drill bit insert with sinusoidal interface | — | 1998-01-20 |
| 5647449 | Crowned surface with PDC layer | — | 1997-07-15 |
| 5641921 | Low temperature, low pressure, ductile, bonded cermet for enhanced abrasion and erosion performance | Barton Hampshire | 1997-06-24 |
| 5630479 | Cutting element for drill bits | — | 1997-05-20 |
| 5624068 | Diamond tools for rock drilling, metal cutting and wear part applications | Mats Waldenstrom, Udo Fischer, Lars H. Hillert | 1997-04-29 |
| 5544713 | Cutting element for drill bits | — | 1996-08-13 |
| 5524719 | Internally reinforced polycrystalling abrasive insert | — | 1996-06-11 |
| 5499688 | PDC insert featuring side spiral wear pads | — | 1996-03-19 |
| 5498081 | Bearing assembly incorporating shield ring precluding erosion | Thomas M. Dennis | 1996-03-12 |
| 5496638 | Diamond tools for rock drilling, metal cutting and wear part applications | Mats G. Waldenstro/ m, Udo Fischer, Lars H. Hillert | 1996-03-05 |
| 5342129 | Bearing assembly with sidewall-brazed PCD plugs | Thomas M. Dennis | 1994-08-30 |