E21F 13/068
Special adaptations for use at the junction of the working face with
Official title: {Special adaptations for use at the junction of the working face with the gallery, e.g. driving stations coupled to the driving station of the winning machine}
E21F13/068 (Special adaptations for use at the junction of the working face with) appears on 19 US grants and 11 published applications in this corpus.
Search patents in E21F- Granted patents
- 19
- Published applications
- 11
- Assignees
- 10
- Inventors
- 39
- Latest grant
- 11 Apr 2017
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 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 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 3 |
| 2013 | 1 | 0 |
| 2014 | 3 | 3 |
| 2015 | 3 | 2 |
| 2016 | 0 | 1 |
| 2017 | 1 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Scraper-chain conveyors32US 4,037,713 AGewerkschaft Eisenhutte Westfalia · 1977
- Tightening arrangement for longwall mining machine cable and conveyor16US 4,037,876 AGewerkschaft Eisenhutte Westfalia · 1977
- Transfer station from a longwall chain conveyor to a drift chain conveyor5US 4,586,753 AHalbach & Braun · 1986
- Tail station for a scraper chain conveyor and chain wheel assembly therefor4US 8,490,779 B2Bucyrus Europe GmbH · 2013
- Tail drive assembly4US 8,783,446 B2American Equipment & Machine · 2014