E21B 12/06
Mechanical cleaning devices
E21B12/06 (Mechanical cleaning devices) appears on 71 US grants and 39 published applications in this corpus.
Search patents in E21B- Granted patents
- 71
- Published applications
- 39
- Assignees
- 39
- Inventors
- 114
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 3 | 1 |
| 2011 | 1 | 2 |
| 2012 | 0 | 1 |
| 2013 | 2 | 2 |
| 2014 | 1 | 1 |
| 2015 | 1 | 5 |
| 2016 | 4 | 2 |
| 2017 | 5 | 2 |
| 2018 | 4 | 1 |
| 2019 | 3 | 5 |
| 2020 | 6 | 4 |
| 2021 | 5 | 2 |
| 2022 | 2 | 0 |
| 2023 | 2 | 3 |
| 2024 | 4 | 0 |
| 2025 | 1 | 0 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and apparatus, including hose reel, for cleaning an oil and gas well riser assembly with multiple tools simultaneously24 Mar 2026US 12,584,357 B1Tri-State Environmental, LLC
- Scraper, rock drilling unit and method8 Apr 2025US 12,270,299 B2Sandvik Mining and Construction Oy
- Device and method for reaming a flight gap of a drill flight3 Dec 2024US 12,158,042 B2BAUER Maschinen GmbH
- Method and apparatus, including hose reel, for cleaning an oil and gas well riser assembly with multiple tools simultaneously26 Nov 2024US 12,151,270 B1Tri-State Environmental, LLC
- Pipe wiper box7 May 2024US 11,976,530 B1Pruitt Tool & Supply Co.
- Completions-based well cleanout using magnetic cleanout tool30 Jul 2026US 2026/0218587 A1Halliburton Energy Services.Inc.
- Drilling drive arrangement for underground construction and method for operating a drilling drive arrangement for underground construction12 Mar 2026US 2026/0071498 A1BAUER Maschinen GmbH
- Downhole casing auger for removal of paraffin from oil and gas wells12 Mar 2026US 2026/0071501 A1Missaukee Oil and Gas Company LLC
- Device and method for reaming a flight gap of a drill flight28 Dec 2023US 2023/0417108 A1BAUER Maschinen GmbH
- Scraper, rock drilling unit and method5 Oct 2023US 2023/0313618 A1Sandvik Mining and Construction Oy
Most cited
By later US patents
- Drilling apparatus with dynamic cuttings removal and cleaning94US 5,651,420 ABaker Hughes Incorporated · 1997
- Air groove scraper22US 4,515,228 AHughes Tool Company - USA · 1985
- Drilling apparatus with dynamic cuttings removal and cleaning16US 5,901,797 ABaker Hughes Incorporated · 1999
- Soil sample core extraction tool15US 4,098,360 A1978
- Auger13US 4,022,286 ALeeco, Inc. · 1977