E21D 5/06
Lining shafts: with iron or steel
Official title: with iron or steel (E21D5/01, E21D5/012, E21D5/016 take precedence)
E21D5/06 (Lining shafts: with iron or steel) appears on 10 US grants and 8 published applications in this corpus.
Search patents in E21D- Granted patents
- 10
- Published applications
- 8
- Assignees
- 10
- Inventors
- 23
- Latest grant
- 30 Aug 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
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| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 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 | 1 |
| 2012 | 0 | 2 |
| 2013 | 0 | 0 |
| 2014 | 1 | 2 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Anti-seismic support method for mine shaft30 Aug 2022US 11,428,101 B2China Coal Research Institute
- Fastener and method of sealing passage4 Jun 2019US 10,309,220 B2Relborgn Pty Ltd
- Hollow rebar for crosshole sonic logging access tubes and longitudinal concrete reinforcing in drilled shafts7 Jul 2015US 9,074,473 B2Con-Tech Systems Ltd.
- Mine shaft liner plate system and method5 Aug 2014US 8,795,777 B2Contech Engineered Solutions LLC
- Excavation shield apparatus and method28 Mar 1995US 5,401,122 AGwinnett Enterprises, Limited
- Anti-seismic support method for mine shaft20 Jan 2022US 2022/0018250 A1China Coal Research Institute
- Fastener and method of sealing passage19 Jan 2017US 2017/0016326 A1Relborgn Pty Ltd
- Shaft collar assembly and method25 Feb 2016US 2016/0053552 A1
- Mine shaft liner plate system and method4 Dec 2014US 2014/0356072 A1
- Low profile mine shaft liner plate system and method27 Mar 2014US 2014/0086686 A1
Most cited
By later US patents
- Excavation shield apparatus and method13US 5,401,122 AGwinnett Enterprises, Limited · 1995
- Shaft liner assembly5US 4,027,488 A1977
- Hollow rebar for crosshole sonic logging access tubes and longitudinal concrete reinforcing in drilled shafts4US 9,074,473 B2Con-Tech Systems Ltd. · 2015
- Tunnel liners and methods of making the same3US 4,070,866 ACommercial Shearing, Inc. · 1978
- Fastener and method of sealing passage1US 10,309,220 B2Relborgn Pty Ltd · 2019