Description
Class E21B : EARTH OR ROCK DRILLING
Subclass 1/38: Percussion drilling (drives used in the borehole E21B 4/00) Hammer piston type, i.e. in which the tool bit or anvil is hit by an impulse member
E21B 1/38
Sub-Class
Stats
- 27 US PATENTS IN FORCE
- 4 US APPLICATIONS PENDING
- 9 Total Patent Owners
- 74 TOTAL INVENTORS
Recent Patents
| 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 |
| 12024981 | Direct drive connector sleeve | Mar 12, 21 | Jul 02, 24 | Not available |
| 11999039 | Rotary-percussive hydraulic perforator provided with a stop piston and a braking chamber | Feb 28, 22 | Jun 04, 24 | Establissements Montabert |
| 11840906 | Downhole pressure wave generating device | Aug 29, 22 | Dec 12, 23 | OPTIMUM PETROLEUM SERVICES INC. |
| 11753922 | Control systems and methods to enable autonomous drilling | Mar 18, 22 | Sep 12, 23 | National Technology & Engineering Solutions of Sandia, LLC |
| 11697197 | Hydraulic rotary-percussive hammer drill provided with a stop piston | Feb 28, 22 | Jul 11, 23 | Establissements Montabert |
| 11555351 | Spiral impact drilling machine applicable to rock and soil and construction method | Oct 06, 21 | Jan 17, 23 | Dalian University of Technology |
| 11459856 | Downhole pressure wave generating device | Sep 02, 20 | Oct 04, 22 | OPTIMUM PETROLEUM SERVICES INC. |
| 11408227 | Horizontal drilling machine with impact device | Sep 27, 21 | Aug 09, 22 | Hunan University of Science and Technology |
| 11371287 | Fluid operated drilling device and a method for drilling a hole | Aug 21, 18 | Jun 28, 22 | PIRKAN LAATUPALVELU OY |
| 11280173 | Control systems and methods to enable autonomous drilling | Jan 25, 21 | Mar 22, 22 | National Technology & Engineering Solutions of Sandia, LLC |
| 11207769 | Hydraulic hammering device | Jan 12, 18 | Dec 28, 21 | Furukawa Rock Drill Co., Ltd. |
| 11028643 | Down the hole drilling machine and method for drilling rock | May 31, 18 | Jun 08, 21 | Sandvik Intellectual Property AB |
| 10975664 | Well or bore clearing tool | Aug 19, 19 | Apr 13, 21 | ANCOR-LOC (NZ) LIMITED |
| 10828763 | Percussion drilling device | Nov 04, 15 | Nov 10, 20 | Tracto-Technik GmbH & Co. KG |
| 10384336 | Hydraulic hammer assembly | Apr 12, 16 | Aug 20, 19 | Caterpillar Inc. |
| 10385617 | High frequency fluid driven drill hammer percussion drilling in hard formations | Aug 17, 12 | Aug 20, 19 | Hammergy AS |
| 9937613 | Striker member, and a drilling machine comprising a striker member | Apr 12, 12 | Apr 10, 18 | Atlas Copco Rock Drills AB |
| 9279232 | Front head nut pocket configuration for hydraulic hammer | Oct 12, 12 | Mar 08, 16 | CATERPILLAR INC. |
| 9132541 | Pneumatic hammer mechanism and control method | Jan 29, 10 | Sep 15, 15 | HILTI AKTIENGESELLSCHAFT |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0027,368 | VALVE CYLINDER, IMPACT DEVICE AND METHOD | Dec 02, 22 | Jan 23, 25 | Not available |
| 2024/0337,157 | VALVE-CONTROLLED HIGH-ENERGY HYDROSTATIC DOWN-THE-HOLE IMPACT HAMMER | Mar 11, 24 | Oct 10, 24 | Not available |
| 2022/0010,622 | HORIZONTAL DRILLING MACHINE WITH IMPACT DEVICE | Sep 27, 21 | Jan 13, 22 | Not available |
| 2017/0334,052 | PERCUSSION DRILLING DEVICE | Nov 04, 15 | Nov 23, 17 | TRACTO-TECHNIK GMBH & CO. KG |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 35 Months (last 2 years Issuances)
- 35 Months (last 5 years Issuances)