| 2025/0101,807 | HYDRAULIC IMPACT MECHANISM FOR USE IN EQUIPMENT FOR PROCESSING ROCK AND CONCRETE | Feb 22, 23 | Mar 27, 25 | Not available |
| 2025/0027,368 | VALVE CYLINDER, IMPACT DEVICE AND METHOD | Dec 02, 22 | Jan 23, 25 | Not available |
| 2024/0352,795 | EXPERIMENTAL APPARATUS FOR BREAKING ROCK THROUGH VIBRATION IMPACT | May 12, 23 | Oct 24, 24 | Not available |
| 2024/0337,157 | VALVE-CONTROLLED HIGH-ENERGY HYDROSTATIC DOWN-THE-HOLE IMPACT HAMMER | Mar 11, 24 | Oct 10, 24 | Not available |
| 2023/0358,099 | IMPACT PISTON DEVICE FOR A IMPACT DRILL DRIVE | Apr 10, 23 | Nov 09, 23 | Eurodrill GmbH |
| 2021/0262,290 | WEAR RESISTANT DOWNHOLE PISTON | Feb 17, 21 | Aug 26, 21 | Not available |
| 2020/0370,373 | Pressurized Fluid Flow System Having Multiple Work Chambers for a DTH Hammer and Normal Circulation Hammer thereof | Dec 13, 17 | Nov 26, 20 | Not available |
| 2012/0037,389 | Composite Seal for a Hydraulic Hammer | Aug 11, 10 | Feb 16, 12 | CATERPILLAR INC. |
| 2010/0288,521 | VIBRATION HAMMER | Dec 31, 08 | Nov 18, 10 | Not available |
| 2010/0051,348 | ROCK DRILLING EQUIPMENT AND A METHOD IN ASSOCIATION WITH SAME | Jan 10, 08 | Mar 04, 10 | ATLAS COPCO ROCK DRILLS AB |
| 2009/0321,099 | PERCUSSION DEVICE, DRILLING MACHINE INCLUDING SUCH A PERCUSSION DEVICE AND METHOD FOR CONTROLLING SUCH A PERCUSSION DEVICE | Sep 12, 07 | Dec 31, 09 | ATLAS COPCO ROCK DRILLS AB |
| 2009/0025,948 | Percussion Device | Mar 22, 06 | Jan 29, 09 | SANDVIK MINING AND CONSTRUCTION OY |
| 2007/0289,782 | REAMING TOOL SUITABLE FOR RUNNING ON CASING OR LINER AND METHOD OF REAMING | May 11, 07 | Dec 20, 07 | BAKER HUGHES INCORPORATED |
| 2007/0261,892 | DEVICE FOR A DRILLING TOOL | Apr 06, 05 | Nov 15, 07 | Not available |
| 2007/0240,906 | TAPERED REAMER BIT | Apr 02, 07 | Oct 18, 07 | Not available |
| 2007/0163,808 | Drilling and hole enlargement device | Jan 18, 06 | Jul 19, 07 | SMITH INTERNATIONAL, INC. |
| 2006/0237,234 | Earth boring tool | Apr 25, 05 | Oct 26, 06 | Dennis Tool Company |
| 2006/0113,113 | Steerable underreamer/stabilizer assembly and method | Jan 18, 06 | Jun 01, 06 | SMITH INTERNATIONAL, INC. |
| 2006/0037,783 | Deep hole boring head and deep hole boring method for boring a production piece | Aug 15, 05 | Feb 23, 06 | SAFRAN LANDING SYSTEMS |
| 2006/0021,801 | RETRIEVABLE CENTER BIT | Feb 08, 05 | Feb 02, 06 | SCHLUMBERGER TECHNOLOGY CORPORATION |