Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12123260 | Drill bit assembly for fluid-operated percussion drill tools | — | 2024-10-22 |
| 11959337 | Drilling unit | — | 2024-04-16 |
| 11739593 | Drill bit assembly for percussion drill tools | — | 2023-08-29 |
| 11725456 | Hydraulic down-the-hole hammer and subsea pile | Markku Keskiniva | 2023-08-15 |
| 11236549 | Drill bit with detachable bit head | Ciaran Purcell | 2022-02-01 |
| 10876359 | Multi-accumulator arrangement for hydraulic percussion mechanism | John Kosovich | 2020-12-29 |
| 10808476 | Drill rod for percussion drill tool | John Kosovich, Hongbin Wang | 2020-10-20 |
| 9103165 | Down-the-hole hammer | — | 2015-08-11 |
| 9045945 | Attachment for percussion drill tools | — | 2015-06-02 |
| 8985245 | Drill bit assembly for fluid-operated percussion drill tools | — | 2015-03-24 |
| 7987930 | Drill bit assembly for fluid-operated percussion drill tools | — | 2011-08-02 |
| 7975784 | Drill bit assembly for fluid-operated percussion drill tools | — | 2011-07-12 |
| 7735584 | Percussion hammer for enlarging drilled holes | — | 2010-06-15 |
| 6637520 | Component mounting method and apparatus for a percussion tool | — | 2003-10-28 |
| 6290424 | Segmented ring mounting for a fluid-operated percussion drill tool | — | 2001-09-18 |
| 5685380 | Reverse circulation down-the-hole drill | Patrick Purcell | 1997-11-11 |