Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10907417 | Polycrystalline diamond chisel type insert for use in percussion drill bits even for use in large hole percussion drilling of oil wells | — | 2021-02-02 |
| 9551189 | Polycrystalline diamond percussion drill bits using low thrust and torque for application with small diameter drill bits | — | 2017-01-24 |
| D574403 | Hard rock percussion drill bit with paraboloid PCD inserts | — | 2008-08-05 |
| 7392866 | Roof drilling system improvements | — | 2008-07-01 |
| D529937 | Heavy duty roof drill bit | — | 2006-10-10 |
| D524333 | Heavy duty hard rock drill tool | — | 2006-07-04 |
| D516104 | Hard rock drill tool | — | 2006-02-28 |
| D514131 | Rock drilling tool with ovate cutters | — | 2006-01-31 |
| 6966393 | Drill drive steel | — | 2005-11-22 |
| D487753 | Over-reamer drill tool for pilot bit | — | 2004-03-23 |
| D483382 | Over-reamer drilling tool for pilot bit | — | 2003-12-09 |
| D483042 | Over-reamer drilling tool for pilot bit | — | 2003-12-02 |
| 6427782 | Noise suppression drilling system | — | 2002-08-06 |
| 6374932 | Heat management drilling system and method | — | 2002-04-23 |
| 6161635 | Drilling system drive steel | — | 2000-12-19 |
| D430578 | Rotary mining bit | — | 2000-09-05 |
| 6092612 | Rotary drilling systems | — | 2000-07-25 |
| D424579 | Rotary mining bit | — | 2000-05-09 |
| 5875858 | Low volume air-water drilling systems and methods | — | 1999-03-02 |
| 5535839 | Roof drill bit with radial domed PCD inserts | — | 1996-07-16 |
| 5383526 | Methods for rock mining with non-coring rotary tools | — | 1995-01-24 |
| D351174 | Roof drill bit for mining machine | — | 1994-10-04 |
| 5303787 | Rotary mining tools | — | 1994-04-19 |
| D340248 | Roof drill bit for mining | — | 1993-10-12 |
| 5180022 | Rotary mining tools | — | 1993-01-19 |