E21B 21/011
Dust eliminating or dust removing while drilling
Official title: {Dust eliminating or dust removing while drilling}
E21B21/011 (Dust eliminating or dust removing while drilling) appears on 21 US grants and 24 published applications in this corpus.
Search patents in E21B- Granted patents
- 21
- Published applications
- 24
- Assignees
- 29
- Inventors
- 96
- Latest grant
- 15 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 3 |
| 2015 | 1 | 3 |
| 2016 | 2 | 0 |
| 2017 | 0 | 2 |
| 2018 | 3 | 1 |
| 2019 | 1 | 1 |
| 2020 | 0 | 1 |
| 2021 | 3 | 0 |
| 2022 | 1 | 3 |
| 2023 | 2 | 3 |
| 2024 | 4 | 5 |
| 2025 | 3 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Device for extracting drilling sludge and the use thereof15 Jul 2025US 12,358,091 B2Hilti Aktiengesellschaft
- Device for preventing abrupt blockage in blooie line of gas drilling15 Apr 2025US 12,276,166 B2Southwest Petroleum University
- Experimental apparatus for rock-breaking through vibration impact25 Feb 2025US 12,234,690 B2China University of Petroleum-Beijing
- Inlet tube, rock drilling rig and method of sampling24 Dec 2024US 12,173,570 B2Sandvik Mining and Construction Oy
- Homogenizer, rock drilling rig and method of sampling12 Nov 2024US 12,139,979 B2Sandvik Mining and Construction Oy
- Systems and Methods for Downward Drilling Robotic Systems27 Aug 2026US 2026/0251050 A1August Robotics Limited
- Method for monitoring dust collector performance, a dust collecting arrangement of a drilling apparatus and a rock drilling rig23 Apr 2026US 2026/0110226 A1Sandvik Mining and Construction Oy
- Experimental apparatus for breaking rock through vibration impact24 Oct 2024US 2024/0352795 A1China University of Petroleum-Beijing
- Drilling machine with small volume and high speed for dust-free mechanical drilling11 Jul 2024US 2024/0229580 A1China University of Mining and Technology
- Device for preventing abrupt blockage in blooie line of gas drilling15 Feb 2024US 2024/0052713 A1Southwest Petroleum University
Most cited
By later US patents