E21D 11/15
Plate linings
Official title: Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members (insulation E21D11/38)
E21D11/15 (Plate linings) appears on 90 US grants and 62 published applications in this corpus.
Search patents in E21D- Granted patents
- 90
- Published applications
- 62
- Assignees
- 70
- Inventors
- 223
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 0 | 2 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 3 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 4 |
| 2012 | 3 | 3 |
| 2013 | 1 | 2 |
| 2014 | 4 | 4 |
| 2015 | 4 | 5 |
| 2016 | 2 | 3 |
| 2017 | 2 | 0 |
| 2018 | 2 | 4 |
| 2019 | 5 | 7 |
| 2020 | 2 | 3 |
| 2021 | 1 | 3 |
| 2022 | 7 | 5 |
| 2023 | 2 | 2 |
| 2024 | 4 | 2 |
| 2025 | 4 | 3 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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
- Composite supporting structure combining fabric-form bag-behind-wall grouting and high-strength support frames, and construction method thereof17 Jun 2025US 12,331,642 B1Shandong Jianzhu University
- Screen handling system31 Dec 2024US 12,180,835 B2Joy Global Underground Mining LLC
- 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
- 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
- Composite support structure combining bag-based backfill grouting and high-strength support frame, and construction method19 Jun 2025US 2025/0198286 A1Shandong Jianzhu University
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
- Grid composite for longwall shield recovery in underground coal and trona mines20US 5,199,825 AThe Tensar Corporation · 1993