E21F 13/086
Armoured conveyors shifting devices
Official title: {Armoured conveyors shifting devices}
E21F13/086 (Armoured conveyors shifting devices) appears on 13 US grants and 2 published applications in this corpus.
Search patents in E21F- Granted patents
- 13
- Published applications
- 2
- Assignees
- 8
- Inventors
- 32
- Latest grant
- 4 Feb 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 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 | 1 |
| 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 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Conveyor system for mining equipment4 Feb 2020US 10,550,694 B2Joy Global Underground Mining LLC
- Hydraulic ram3 Jul 1984US 4,457,212 AGewerkschaft Eisenhutte Westfalia
- Longwall mineral mining installation21 Jun 1983US 4,389,072 AGewerkschaft Eisenhutte Westfalia
- Mining apparatus18 May 1982US 4,330,154 ADowty Mining Equipment Limited
- Thrust device using hydraulic jacks3 Feb 1981US 4,248,136 ACharbonnages de France
Most cited
By later US patents
- Hydraulic ram20US 4,457,212 AGewerkschaft Eisenhutte Westfalia · 1984
- Mining apparatus11US 4,330,154 ADowty Mining Equipment Limited · 1982
- Longwall mineral mining installation9US 4,389,072 AGewerkschaft Eisenhutte Westfalia · 1983
- Conveyor system for mining equipment8US 10,550,694 B2Joy Global Underground Mining LLC · 2020
- Tensioning a longwall mineral mining installation7US 4,169,689 AGewerkschaft Eisenhutte Westfalia · 1979