E21F 5/02
Means or methods for preventing, binding, depositing, or removing dust: by wetting
Official title: by wetting or spraying
E21F5/02 (Means or methods for preventing, binding, depositing, or removing dust: by wetting) appears on 64 US grants and 88 published applications in this corpus.
Search patents in E21F- Granted patents
- 64
- Published applications
- 88
- Assignees
- 58
- Inventors
- 230
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 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 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 3 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 0 | 2 |
| 2012 | 1 | 0 |
| 2013 | 2 | 7 |
| 2014 | 2 | 4 |
| 2015 | 3 | 5 |
| 2016 | 2 | 9 |
| 2017 | 5 | 8 |
| 2018 | 4 | 4 |
| 2019 | 6 | 8 |
| 2020 | 8 | 8 |
| 2021 | 2 | 4 |
| 2022 | 4 | 5 |
| 2023 | 4 | 1 |
| 2024 | 4 | 8 |
| 2025 | 2 | 5 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for coal seam gas seepage displacement, seepage water locking and dust reduction22 Sep 2026US 12,742,389 B2Hunan University of Science and Technology
- Smart dust suppression system that sprays atomized water through a fan24 Mar 2026US 12,582,934 B2
- Water dispensing management for autonomous machines17 Jun 2025US 12,331,644 B2Caterpillar Inc.
- Efficient biodegradable dust suppressant for open-pit mine and preparation method therefor14 Jan 2025US 12,195,663 B2Shandong University of Science and Technology
- Apparatus and method for controlling flushing in rock drilling3 Dec 2024US 12,158,047 B2Sandvik Mining and Construction Oy
- Method for coal seam gas seepage displacement, seepage water locking and dust reduction23 Apr 2026US 2026/0110250 A1Hunan University of Science and Technology
- Dust detection and mitigation on worksites16 Apr 2026US 2026/0103983 A1Caterpillar Inc.
- Immobilized mining microbial accelerator based on biosurfactant bacteria and preparation method thereof23 Oct 2025US 2025/0327019 A1Shandong University of Science and Technology
- Management system of workplace and method for managing workplace31 Jul 2025US 2025/0244774 A1Komatsu Ltd.
- Tailings dust suppression19 Jun 2025US 2025/0198289 A1Arizona Board of Regents on Behalf of the University of Arizona
Most cited
By later US patents
- Method of sealing interior mine surface with a fire retardant hydrophilic polyurethane foam and resulting product128US 4,237,182 AW. R. Grace & Co. · 1980
- Aqueous foam compositions to suppress coal dust38US 3,954,662 AMonsanto Research Corporation · 1976
- Method of reducing mine dust28US 4,487,615 AConoco Inc. · 1984
- Method of preventing environmental erosion21US 4,087,572 AThe Dow Chemical Company · 1978
- Sound absorber21US 5,959,264 A1999