E21F 13/06
Transport of mined material at or adjacent to the working face
Official title: {Transport of mined material} at or adjacent to the working face
E21F13/06 (Transport of mined material at or adjacent to the working face) appears on 169 US grants and 142 published applications in this corpus.
Search patents in E21F- Granted patents
- 169
- Published applications
- 142
- Assignees
- 75
- Inventors
- 349
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 9 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 2 |
| 2009 | 1 | 4 |
| 2010 | 2 | 4 |
| 2011 | 3 | 2 |
| 2012 | 4 | 11 |
| 2013 | 4 | 14 |
| 2014 | 13 | 7 |
| 2015 | 12 | 8 |
| 2016 | 5 | 13 |
| 2017 | 15 | 15 |
| 2018 | 11 | 14 |
| 2019 | 18 | 10 |
| 2020 | 9 | 12 |
| 2021 | 6 | 7 |
| 2022 | 5 | 7 |
| 2023 | 5 | 3 |
| 2024 | 7 | 3 |
| 2025 | 3 | 2 |
| 2026 | 3 | 1 |
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
- Rod-spring structured clamping and loosening device for downhole belt replacement apparatus and operating method thereof12 May 2026US 12,623,849 B2North China Institute of Science and Technology
- Tunnel tunneling system3 Mar 2026US 12,565,837 B2Ccteg Taiyuan Research Institute
- Systems and methods for automated control of a beam stageloader bootend19 Aug 2025US 12,391,483 B2Joy Global Underground Mining LLC
- Systems and methods for automated control of a beam stageloader bootend19 Aug 2025US 12,391,484 B2Joy Global Underground Mining LLC
- Double-end chain tension force control system for cross side-dumping type flight conveyor and control method therefor16 Apr 2026US 2026/0103984 A1Taiyuan University of Technology
- Rod-spring structured clamping and loosening device for downhole belt replacement apparatus and operating method thereof3 Jul 2025US 2025/0214781 A1North China Institute of Science and Technology
- Miner automated hardware installation system and automated brattice installer5 Jun 2025US 2025/0179917 A1The Mosaic Company
- Systems and methods for automated control of a beam stageloader bootend19 Sep 2024US 2024/0308774 A1Joy Global Underground Mining LLC
- Systems and methods for automated control of a beam stageloader bootend19 Sep 2024US 2024/0308775 A1Joy Global Underground Mining LLC
Most cited
By later US patents
- Scraper-chain conveyors32US 4,037,713 AGewerkschaft Eisenhutte Westfalia · 1977
- Automatic longwall mining system and method26US 4,228,508 ABergwerksverband GmbH · 1980
- Scraper chain conveyor23US 4,332,317 AKloeckner-Werke AG · 1982
- Chain drive or return arrangement and chain assembly and sprocket employed therein22US 8,038,558 B2DBT GmbH · 2011
- Extraction device, particularly for mining, and method for controlling the extraction device21US 8,550,236 B2Caterpillar Global Mining Europe GmbH · 2013