Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8601908 | Method and apparatus for a true geometry, durable rotating drill bit | — | 2013-12-10 |
| 8439134 | Method and apparatus for a true geometry, durable rotating drill bit | — | 2013-05-14 |
| 8201646 | Method and apparatus for a true geometry, durable rotating drill bit | — | 2012-06-19 |
| 5040623 | Controlled true geometry rock bit with one piece body | — | 1991-08-20 |
| 5024539 | Friction bearing and cone retention thrust system for a rock bit | — | 1991-06-18 |
| D304514 | Communion cup | Earle L. Hinton | 1989-11-07 |
| 4854368 | Lost foam casting method | — | 1989-08-08 |
| 4819517 | Selected bearing couple for a rock bit journal and method for making same | — | 1989-04-11 |
| 4776599 | Dynamic packing ring seal system | — | 1988-10-11 |
| 4753706 | Method for chemically structuralizing telescopic joints | — | 1988-06-28 |
| 4744270 | Method for thermally fitting hard teeth in rock bits | — | 1988-05-17 |
| 4703849 | Vending package | Earle L. Hinton | 1987-11-03 |
| 4684015 | Vending package | Earle L. Hinton | 1987-08-04 |
| 4643792 | Method for chemically structuralizing telescopic joints | — | 1987-02-17 |
| 4623027 | Unsegmented rotary rock bit structure and hydraulic fitting | — | 1986-11-18 |
| 4620803 | Friction bearing couple | — | 1986-11-04 |
| 4596472 | Thrust bearing and axial retainer system for rotary cone rock bits and method for assembling same | — | 1986-06-24 |
| 4506997 | Rock bit cone retention | Michael E. Schramm | 1985-03-26 |
| 4499642 | Composite bearing | Richard J. Quinones, Alan W. Lockstedt | 1985-02-19 |
| 4486104 | Composite bearing | Richard J. Ouinones, Alan W. Lockstedt | 1984-12-04 |
| 4444518 | Rock bit cone retention means | Michael E. Schramm | 1984-04-24 |
| 4350060 | Method of making a rotary rock bit | — | 1982-09-21 |
| 4325439 | Diamond insert stud for a drag bit | — | 1982-04-20 |
| 4266622 | Rotary rock bit and method of making same | — | 1981-05-12 |
| 4221270 | Drag bit | — | 1980-09-09 |