E21D 11/28
Longitudinal struts , i.e. longitudinal connections between adjoining arches
Official title: Longitudinal struts {, i.e. longitudinal connections between adjoining arches}
E21D11/28 (Longitudinal struts , i.e. longitudinal connections between adjoining arches) appears on 3 US grants and 5 published applications in this corpus.
Search patents in E21D- Granted patents
- 3
- Published applications
- 5
- Assignees
- 4
- Inventors
- 10
- Latest grant
- 22 Mar 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 2 | 1 |
| 2017 | 0 | 1 |
By publication year.
Recent patents
- Self-moving tunnel support canopy22 Mar 2016US 9,291,053 B2
- Impact resistant lagging, method for designing impact resistant lagging, and apparatus for testing impact resistant lagging2 Feb 2016US 9,249,663 B2FCI Holdings Delaware, Inc.
- Rib for supporting and reinforcing an excavation21 Jul 2015US 9,085,977 B2Elas Geotecnica S.R.L.
- 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.
- Apparatus for Testing Impact Resistant Lagging23 Jun 2016US 2016/0178497 A1FCI Holdings Delaware, Inc.
- 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.
- Impact Resistant Lagging, Method For Designing Impact Resistant Lagging, and Apparatus for Testing Impact Resistant Lagging21 Oct 2010US 2010/0266349 A1Jennmar Corporation
Most cited
By later US patents
- Rib for supporting and reinforcing an excavation4US 9,085,977 B2Elas Geotecnica S.R.L. · 2015
- Impact resistant lagging, method for designing impact resistant lagging, and apparatus for testing impact resistant lagging1US 9,249,663 B2FCI Holdings Delaware, Inc. · 2016
- Self-moving tunnel support canopy1US 9,291,053 B22016