E21F 5/18
Impregnating walls, or the like, with liquids for binding dust
Official title: Impregnating walls, or the like, with liquids for binding dust {(injections for improving soil or rock E21D9/001; borehole closures, i.e. packers, for use during the injection process E21B33/12)}
E21F5/18 (Impregnating walls, or the like, with liquids for binding dust) appears on 10 US grants and 4 published applications in this corpus.
Search patents in E21F- Granted patents
- 10
- Published applications
- 4
- Assignees
- 10
- Inventors
- 29
- Latest grant
- 23 Feb 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 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 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 2 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Methods of and systems for controlling dust23 Feb 2021US 10,927,280 B2Ecolab USA Inc.
- Method for efficiently treating spontaneous ignition of remaining coal in large area goaf of shallow-buried coal bed16 Jan 2018US 9,869,178 B2China University of Mining and Technology
- Arrangement for the admission of pressurized water to spray systems22 Jun 2010US 7,740,421 B2DBT GmbH
- Flexible continuous grout filled packer for use with a water infusion system17 Nov 1981US 4,300,631 AThe United States of America as represented by the Secretary of the Interior
- Tubular one-way closure for injecting a material into a hole27 Mar 1979US 4,146,094 ABergwerksverband GmbH
- Dust and integrity control compositions27 May 2021US 2021/0155838 A1McTron Technologies, LLC
- Method for efficiently treating spontaneous ignition of remaining coal in large area goaf of shallow-buried coal bed21 Sep 2017US 2017/0268338 A1China University of Mining and Technology
- Methods of and Systems for Controlling Dust11 May 2017US 2017/0130109 A1Ecolab USA Inc.
- Arrangement for the admission of pressurized water to spray systems12 Jul 2007US 2007/0158995 A1DBT GmbH
Most cited
By later US patents
- Flexible continuous grout filled packer for use with a water infusion system17US 4,300,631 AThe United States of America as represented by the Secretary of the Interior · 1981
- Method of securing objects in passages and arrangement obtained thereby, particularly hose lines sealingly secured in the passages of coal mines for dust suppression7US 4,008,576 ABergwerksverband GmbH · 1977
- Prevention of self-ignition (spontaneous ignition) of coal through the use of calcium or magnesium chloride with addition of a wetting agent2US 3,990,517 AChemische Fabrik Kalk GmbH · 1976
- Method for preventing fluid migration in coal seams2US 4,009,578 AContinental Oil Company · 1977
- Tubular one-way closure for injecting a material into a hole2US 4,146,094 ABergwerksverband GmbH · 1979