Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9708858 | Methods to repair worn or eroded PDC cutters, cutters so repaired, and use of repaired PDC cutters in drill bits or other tools | William W. King, Gary M. Thigpen, Federico Bellin, Charles Daniel Johnson | 2017-07-18 |
| 9481057 | Method for applying hardfacing to a matrix substrate of a drill bit | Charles Daniel Johnson | 2016-11-01 |
| 9375827 | Methods to repair worn or eroded PDC cutters, cutters so repaired, and use of repaired PDC cutters in drill bits or other tools | Charles Daniel Johnson | 2016-06-28 |
| 9359824 | Method for reducing intermetallic compounds in matrix bit bondline | Gary M. Thigpen, Federico Bellin, Olivier Ther, Alfazazi Dourfaye, Bruno Cuillier De Maindreville +1 more | 2016-06-07 |
| 9289864 | Method for repairing or reinforcing cutter pockets of a drill bit | Charles Daniel Johnson | 2016-03-22 |