E21F 5/04
Spraying barriers
Official title: Spraying barriers (spray nipples, spraying in general B05B, B05D; picks with arrangements of fluid-spraying nozzles E21C35/187)
E21F5/04 (Spraying barriers) appears on 11 US grants and 10 published applications in this corpus.
Search patents in E21F- Granted patents
- 11
- Published applications
- 10
- Assignees
- 12
- Inventors
- 39
- Latest grant
- 16 Jan 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 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 | 1 | 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 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 2 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 2 |
| 2021 | 2 | 1 |
| 2022 | 1 | 4 |
| 2023 | 2 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Gas-liquid spray dust settlement system for fully mechanized mining face16 Jan 2024US 11,873,719 B2Anhui University of Science and Technology
- High-temperature high-efficiency explosion-proof integrated modular dust removal equipment for pyrolysis raw coal gas10 Oct 2023US 11,781,431 B2Guoke Yongji (Beijing) Engineering Installation Co., Ltd.
- Vehicular work machine and method for vehicular work machine water control3 Jan 2023US 11,542,818 B2Husqvarna AB
- Sprayer for settling dust of coal mine8 Nov 2022US 11,492,906 B2Anhui University of Science and Technology
- Absorption-induction convectional dust-controlling/removing air/fog curtain device of fully-mechanized working face and method thereof8 Jun 2021US 11,028,693 B2Shandong University of Science and Technology
- Control of dust formation in demolition work with a tool-carrying work vehicle22 Dec 2022US 2022/0401986 A1Brokk Aktiebolag
- Gas-liquid spray dust settlement system for fully mechanized mining face6 Oct 2022US 2022/0316336 A1Anhui University of Science and Technology
- Sprayer for settling dust of coal mine30 Jun 2022US 2022/0205360 A1Anhui University of Science and Technology
- High-temperature high-efficiency explosion-proof integrated modular dust removal equipment for pyrolysis raw coal gas12 May 2022US 2022/0145760 A1Guoke Yongji (Beijing) Engineering Installation Co., Ltd.
- Absorption-induction convectional dust-controlling/removing air/fog curtain device of fully-mechanized working face and method thereof18 Feb 2021US 2021/0047927 A1Shandong University of Science and Technology
Most cited
By later US patents
- Method and apparatus for dust control treatment18US 3,961,752 ACominco Ltd. · 1976
- Method and apparatus for stopping the spread of a fire in an underground mine9US 5,909,777 AJamison Family Trust · 1999
- Quick connect fire and dust suppression system7US 9,086,180 B22015
- Absorption-induction convectional dust-controlling/removing air/fog curtain device of fully-mechanized working face and method thereof1US 11,028,693 B2Shandong University of Science and Technology · 2021