E21D 11/30
Bases for lower arch members
Official title: Bases for lower arch members (for props E21D15/54)
E21D11/30 (Bases for lower arch members) appears on 3 US grants and 4 published applications in this corpus.
Search patents in E21D- Granted patents
- 3
- Published applications
- 4
- Assignees
- 4
- Inventors
- 6
- Latest grant
- 22 Mar 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 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 | 0 | 0 |
| 2015 | 1 | 2 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Rib for supporting and consolidating an excavation and method for installing a structure to support and consolidate an excavation6 Apr 2017US 2017/0096896 A1Officine Maccaferri Italia S.R.L.
- Method for constructing a tunnel course, and structural element for use by the method7 May 2015US 2015/0125215 A1Stabinor AS
- Self-moving tunnel support canopy26 Mar 2015US 2015/0086272 A1
- Rib for supporting and reinforcing an excavation29 Nov 2012US 2012/0301223 A1Elas Geotecnica S.R.L.
Most cited
By later US patents