Class E21B : EARTH OR ROCK DRILLING
Subclass 1/30: Percussion drilling (drives used in the borehole E21B 4/00) with a reciprocating impulse member (E21B 1/02, E21B 1/38 take precedence) the impulse member being a piston driven directly by fluid pressure by air, steam or gas pressure
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12024950 | Flushing and connection arrangements for percussion drill tools | Mar 25, 21 | Jul 02, 24 | MINCON INTERNATIONAL LIMITED |
| 11555351 | Spiral impact drilling machine applicable to rock and soil and construction method | Oct 06, 21 | Jan 17, 23 | Dalian University of Technology |
| 11319755 | Arrangement and method for installing casing | Jan 21, 19 | May 03, 22 | Mincon Nordic Oy |
| 11072007 | System and method for manufacturing electrode for secondary battery | Jul 03, 18 | Jul 27, 21 | LG Chem, Ltd |
| 11028643 | Down the hole drilling machine and method for drilling rock | May 31, 18 | Jun 08, 21 | Sandvik Intellectual Property AB |
| 10161188 | Dynamic seal tube for a down hole hammer drill | Jul 10, 14 | Dec 25, 18 | DRILLROC PNEUMATIC PTY LTD. |
| 8800678 | Oil lubricant | Nov 27, 09 | Aug 12, 14 | PNEUMA-TOOL CANADA INC. |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2024/0384,597 | DOWN-THE-HOLE HAMMER WITH PORTED PISTON AND FLOW CONTROL VALVE | May 16, 23 | Nov 21, 24 | Caterpillar Inc. |
| 2024/0125,228 | PERCUSSION DRILLING APPARATUS AND METHOD (WITH DAMPER) | Feb 23, 22 | Apr 18, 24 | Rig Technologies International Pty Ltd |
| 2024/0052,703 | PERCUSSION DRILLING APPARATUS AND METHOD (WITH CHANNELS) | Feb 23, 22 | Feb 15, 24 | Rig Technologies International Pty Ltd |
| Upgrade to the Professional Level to view Top Owners for this Subclass.Learn More |
|---|
