E21D 11/14
Lining predominantly with metal
Official title: Lining predominantly with metal {(backfilling the space between the lining elements and the rock E21D11/105)}
E21D11/14 (Lining predominantly with metal) appears on 158 US grants and 110 published applications in this corpus.
Search patents in E21D- Granted patents
- 158
- Published applications
- 110
- Assignees
- 128
- Inventors
- 417
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 5 | 0 |
| 1978 | 7 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 2 | 0 |
| 1986 | 7 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 0 | 2 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 2 | 0 |
| 2008 | 0 | 3 |
| 2009 | 0 | 1 |
| 2010 | 1 | 3 |
| 2011 | 0 | 5 |
| 2012 | 4 | 7 |
| 2013 | 2 | 3 |
| 2014 | 5 | 5 |
| 2015 | 6 | 9 |
| 2016 | 5 | 4 |
| 2017 | 2 | 3 |
| 2018 | 2 | 5 |
| 2019 | 7 | 10 |
| 2020 | 4 | 8 |
| 2021 | 5 | 10 |
| 2022 | 11 | 9 |
| 2023 | 4 | 3 |
| 2024 | 8 | 6 |
| 2025 | 8 | 6 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E21D 11/15Plate linings90
- E21D 11/18Arch members56
- E21D 11/34Joints between vertical props and horizontal top bars5
- E21D 11/28Longitudinal struts , i.e. longitudinal connections between adjoining arches3
- E21D 11/30Bases for lower arch members3
- E21D 11/36Linings or supports specially shaped for tunnels or galleries of irregular cross-section1
Recent patents
- Pipe rehabilitation method19 May 2026US 12,631,281 B2Shonan Gosei-Jushi-Seisakusho K. K.
- Excavation compensation method for tunnelling in deep rock engineering13 Jan 2026US 12,523,150 B1China University of Mining and Technology, Beijing
- Device and method for adjusting tunnel support force11 Nov 2025US 12,467,360 B2
- Device for real-time monitoring movement trajectory of mine roof strata and method thereof11 Nov 2025US 12,467,363 B1Shandong Energy Group Co., Ltd
- Polymer mesh with reinforcing bands for skin control in hard rock mining19 Aug 2025US 12,392,243 B2The Tensar Corporation
- Meshing plan update based on actual surface model of a rock surface1 Oct 2026US 2026/0298087 A1Sandvik Mining and Construction Oy
- Meshing plan for controlling mesh installation6 Aug 2026US 2026/0226831 A1Sandvik Mining and Construction Oy
- Tunnel construction method and machine9 Apr 2026US 2026/0098474 A1MACCAFERRI TUNNELING S.r.l.
- A Mine Bearing Element4 Dec 2025US 2025/0369355 A1Engenex Pty Ltd
- Device for real-time monitoring movement trajectory of mine roof strata and method thereof13 Nov 2025US 2025/0347226 A1Shandong Energy Group Co., Ltd
Most cited
By later US patents
- Lined cavity in the earth42US 4,239,416 APirelli Furlanis Applicazioni Indrauliche · 1980
- Grid composite for backfill barriers and waste applications36US 5,277,520 AThe Tensar Corporation · 1994
- Polymer grid for supplemental roof and rib support of combustible underground openings30US 5,096,335 AThe Tensar Corporation · 1992
- Automatic grid layout system22US 5,816,750 AThe Tensar Corporation · 1998
- Insulated tunnel liner and rehabilitation system21US 4,940,360 A1990