Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10648261 | Circulation subassembly | James L. Hardy, Mark Booth, Gordon Hunter | 2020-05-12 |
| 10370907 | Disconnect and other devices for downhole assembly | James L. Hardy | 2019-08-06 |
| 7252163 | Downhole under-reamer tool | Mark Russell | 2007-08-07 |
| 7128170 | Adjustable stabiliser for directional drilling | Mark Russell | 2006-10-31 |
| 7004266 | Adjustable downhole tool | Mark Russell | 2006-02-28 |
| 6708785 | Fluid controlled adjustable down-hole tool | Mark Russell | 2004-03-23 |
| 4925320 | Feed beam arrangement for a rockdrill | Bruce A. Foster, Nigel W. Copestake | 1990-05-15 |