E21D 23/085
Acting on a conveyor or a guide for the mining machine
Official title: {acting on a conveyor or a guide for the mining machine}
E21D23/085 (Acting on a conveyor or a guide for the mining machine) appears on 23 US grants and 2 published applications in this corpus.
Search patents in E21D- Granted patents
- 23
- Published applications
- 2
- Assignees
- 17
- Inventors
- 46
- Latest grant
- 5 Sep 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 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 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Method and device for monitoring operation of a mining machine unit5 Sep 2023US 11,746,655 B2Caterpillar Inc.
- Apparatus for protecting roof tray when gob-side entry retaining end support migrates3 Nov 2020US 10,822,949 B1China Mining & Civil New Material Science and Technology Ltd.
- Coal face support in a mine24 Feb 2009US 7,494,190 B2Tiefenbach Control Systems GmbH
- Measurement of the alignment of an articulated mine conveyor8 Sep 1992US 5,145,235 AGullick Dobson Limited
- Advanceable mine roof supports18 Dec 1990US 4,978,248 AGewerkschaft Eisenhutte Westfalia
Most cited
By later US patents
- Mineral mining installation12US 4,227,833 AGewerkschaft Eisenhutte Westfalia · 1980
- Mine roof support unit8US 4,600,340 AGewerkschaft Eisenhutte Westfalia · 1986
- Mining apparatus and method6US 4,082,360 APeabody Coal Company · 1978
- Shortwall mining machine6US 4,196,934 ACoal Industry (Patents) Limited · 1980
- Hydraulic shield-type support5US 4,313,698 AHermann Hemscheidt Maschinenfabrik GmbH & Co. · 1982