Issued Patents All Time
Showing 51–62 of 62 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6029759 | Hardfacing on steel tooth cutter element | Jiinjen Albert Sue, James C. Minikus | 2000-02-29 |
| 5963775 | Pressure molded powder metal milled tooth rock bit cone | — | 1999-10-05 |
| 5944127 | Hardfacing material for rock bits | Dah-Ben Liang, Alysia C. White, Jiinjen Albert Sue | 1999-08-31 |
| 5880382 | Double cemented carbide composites | J. Albert Sue | 1999-03-09 |
| 5842701 | Dual functioning seal for rock bits | Chris E. Cawthorne, Sujian Huang, Michael A. Siracki | 1998-12-01 |
| 5842700 | Composite rock bit seal | Sujian Huang, Chris E. Cawthorne, Brian A. James, G. Steven Kyker, Robert Denton | 1998-12-01 |
| 5791422 | Rock bit with hardfacing material incorporating spherical cast carbide particles | Dah-Ben Liang, Alysia C. White, Jiinjen Albert Sue | 1998-08-11 |
| 5662183 | High strength matrix material for PDC drag bits | — | 1997-09-02 |
| 5630514 | Cage type cyclone fine screen device | Fenggang Song | 1997-05-20 |
| 5628837 | Surface decarburization of a drill bit having a refined primary cutting edge | Robert W. Britzke, Jimmy W. Eason | 1997-05-13 |
| 5609447 | Surface decarburization of a drill bit | Robert W. Britzke, Jimmy W. Eason | 1997-03-11 |
| 5589443 | Rock bit grease composition | Robert Denton | 1996-12-31 |