E21C 35/223
Equipment associated with mining machines for sucking dust-laden air from the cutting
Official title: {Equipment associated with mining machines for sucking dust-laden air from the cutting area, with or without cleaning of the air}
E21C35/223 (Equipment associated with mining machines for sucking dust-laden air from the cutting) appears on 48 US grants and 30 published applications in this corpus.
Search patents in E21C- Granted patents
- 48
- Published applications
- 30
- Assignees
- 32
- Inventors
- 85
- Latest grant
- 1 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
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| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
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| 1999 | 1 | 0 |
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| 2001 | 1 | 0 |
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| 2003 | 0 | 1 |
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| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 1 | 1 |
| 2014 | 1 | 4 |
| 2015 | 1 | 3 |
| 2016 | 4 | 3 |
| 2017 | 1 | 1 |
| 2018 | 3 | 0 |
| 2019 | 1 | 3 |
| 2020 | 2 | 2 |
| 2021 | 3 | 3 |
| 2022 | 1 | 1 |
| 2023 | 2 | 0 |
| 2024 | 1 | 2 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and apparatus for removing debris from a drill hole during drilling1 Jul 2025US 12,345,106 B2
- Homogenizer, rock drilling rig and method of sampling12 Nov 2024US 12,139,979 B2Sandvik Mining and Construction Oy
- Ground milling machine with dust removal device and service tunnel and method6 Jun 2023US 11,668,058 B2BOMAG GmbH
- Method and apparatus for removing debris from a drill hole during drilling28 Feb 2023US 11,591,867 B2
- Earth working machine having a dust extraction system and rotatable filter cartridges29 Mar 2022US 11,286,628 B2Wirtgen GmbH
- 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
- Method and apparatus for removing debris from a drill hole during drilling22 Feb 2024US 2024/0060371 A1
- Homogenizer, rock drilling rig and method of sampling4 Jan 2024US 2024/0003206 A1Sandvik Mining and Construction Oy
- Ground milling machine with dust removal device and service tunnel and method17 Mar 2022US 2022/0081853 A1BOMAG GmbH
- Method and apparatus for removing debris from a drill hole during drilling10 Jun 2021US 2021/0172317 A1
Most cited
By later US patents
- Local dust extraction system for an excavation machine51US 9,267,266 B2Vermeer Manufacturing Company · 2016
- Dust control system and method of operation38US 4,380,353 APeabody Coal Company · 1983
- Blower and dust collecting machine and method of operation28US 4,348,057 AB & J Manufacturing Company · 1982
- Apparatus for removing and collecting moisture from a moisture-laden air flow24US 4,225,188 ADresser Industries, Inc. · 1980
- Dust control apparatus for longwall mining machinery23US 5,518,299 AJoy MM Delaware, Inc. · 1996