E21C 35/16
By making use of the timbering, filling, or other supports
Official title: by making use of the timbering, filling, or other supports
E21C35/16 (By making use of the timbering, filling, or other supports) appears on 5 US grants and 1 published applications in this corpus.
Search patents in E21C- Granted patents
- 5
- Published applications
- 1
- Assignees
- 5
- Inventors
- 7
- Latest grant
- 4 Nov 2014
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 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 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Hydraulic circuit for longwall support4 Nov 2014US 8,876,218 B2Tiefenbach Control Systems GmbH
- Shortwall mining machine8 Apr 1980US 4,196,934 ACoal Industry (Patents) Limited
- Longwall mining roof support for double deck machines14 Jun 1977US 4,029,361 AGewerkschaft Eisenhutte Westfalia
- Hook plough apparatus for longwall mining22 Mar 1977US 4,013,320 AWorld Oil Mining Ltd.
- Mining machine longwall propulsion means4 May 1976US 3,954,300 AWorld Oil Mining Ltd.
Most cited
By later US patents