E21F 13/08
Shifting conveyors or other transport devices from one location at the working
Official title: Shifting conveyors or other transport devices from one location at the working face to another (guiding mining machines along conveyors for the cut mineral E21C35/12; in combination with mine roof supports for step-by-step movement E21D23/00)
E21F13/08 (Shifting conveyors or other transport devices from one location at the working) appears on 75 US grants and 48 published applications in this corpus.
Search patents in E21F- Granted patents
- 75
- Published applications
- 48
- Assignees
- 51
- Inventors
- 128
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 1 |
| 2002 | 1 | 2 |
| 2003 | 2 | 1 |
| 2004 | 3 | 4 |
| 2005 | 1 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 5 |
| 2009 | 0 | 2 |
| 2010 | 1 | 0 |
| 2011 | 4 | 1 |
| 2012 | 0 | 2 |
| 2013 | 1 | 2 |
| 2014 | 5 | 2 |
| 2015 | 1 | 2 |
| 2016 | 3 | 3 |
| 2017 | 2 | 1 |
| 2018 | 1 | 4 |
| 2019 | 2 | 1 |
| 2020 | 2 | 0 |
| 2021 | 1 | 5 |
| 2022 | 2 | 3 |
| 2023 | 3 | 1 |
| 2024 | 3 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Mining system with a flexible conveyor system1 Sep 2026US 12,723,512 B2Underground Extraction Technologies Pty LTD
- Mining system19 Nov 2024US 12,146,409 B2Underground Extraction Technologies Pty LTD
- Vehicle and process for moving coarse ore10 Sep 2024US 12,084,972 B2
- Belt line installation device23 Jul 2024US 12,044,127 B1101219508 Sa katchewan Ltd.
- Recovering conveyor systems and continuous miners from mined plunge tunnels in underground mines17 Oct 2023US 11,788,412 B2Underground Extraction Technologies Pty LTD
- Steep-angle thermoplastic elastomer belts and belts made from a combination of a rubber and thermoplastic elastomers with thermoplastic abrasive and impact resistant chevron cleats for mining and heavy industrial applications1 Oct 2026US 2026/0296792 A1ContiTech Deutschland GmbH
- Monorail installation device1 Oct 2026US 2026/0298090 A1Sandvik Mining and Construction Oy
- Excavated matter conveyance system inside driftway9 Oct 2025US 2025/0314173 A1Komatsu Ltd.
- Mining System24 Aug 2023US 2023/0265758 A1Underground Extraction Technologies Pty LTD
- Vehicle and Process for Moving Coarse Ore26 May 2022US 2022/0162941 A1
Most cited
By later US patents
- Apparatus and method for continuous mining45US 5,112,111 AAddington Resources, Inc. · 1992
- Highwall mining apparatus35US 5,692,807 AJoy MM Delaware, Inc. · 1997
- Self-propelled articulated conveyor system32US 6,651,804 B2Joy MM Delaware, Inc. · 2003
- Apparatus for continuous mining24US 5,261,729 AMining Technologies, Inc. · 1993
- Apparatus for continuously conveying coal from a continuous mining machine to a remote floor conveyor24US 5,634,545 AFairchild International Inc. · 1997