E21D 23/0086
In galleries
Official title: {in galleries}
E21D23/0086 (In galleries) appears on 30 US grants and 11 published applications in this corpus.
Search patents in E21D- Granted patents
- 30
- Published applications
- 11
- Assignees
- 19
- Inventors
- 56
- Latest grant
- 12 Jan 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 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 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 4 |
| 2015 | 3 | 2 |
| 2016 | 2 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 1 |
| 2019 | 0 | 1 |
| 2020 | 1 | 1 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Automated support of a gate entry for underground full extraction mining12 Jan 2021US 10,890,068 B2
- Active temporary roof support apparatus27 Oct 2020US 10,815,781 B2Sandvik Intellectual Property AB
- Mining systems11 Apr 2017US 9,617,852 B2Seneca Industries Inc.
- Self-moving tunnel support canopy22 Mar 2016US 9,291,053 B2
- System and method for enabling machine movement12 Jan 2016US 9,234,425 B2Caterpillar Global Mining America LLC
- Automated support of a gate entry for underground full extraction mining18 Jun 2020US 2020/0190982 A1
- Active temporary roof support apparatus23 May 2019US 2019/0153863 A1Sandvik Intellectual Property AB
- Mining underground formations12 Jul 2018US 2018/0195390 A1Seneca Industries Inc.
- Mining systems21 Sep 2017US 2017/0268335 A1Seneca Industries Inc.
- Mining systems6 Aug 2015US 2015/0218943 A1Seneca Industries Inc.
Most cited
By later US patents
- Underground mining machine having temporary roof support means and roof bolting means associated therewith24US 4,199,193 AAcme Machinery Company · 1980
- Mine roof support system15US 4,143,991 A1979
- Movable roof support and bolter system11US 4,710,064 A1987
- Mine roof support assembly8US 4,526,495 AGewerkschaft Eisenhutte Westfalia · 1985
- Movable roof support and bolter system8US 4,676,697 A1987