E21D 11/00
Lining tunnels, galleries or other underground cavities
Official title: Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling (E21D15/00 - E21D23/00 take precedence; specially for shafts E21D5/00; {driving shields in combination with means for lining the tunnel E21D9/06}; lining pressure water galleries, linings therefor E02B9/06)
E21D11/00 (Lining tunnels, galleries or other underground cavities) appears on 693 US grants and 459 published applications in this corpus.
Search patents in E21D- Granted patents
- 693
- Published applications
- 459
- Assignees
- 486
- Inventors
- 1,661
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 20 | 0 |
| 1978 | 26 | 0 |
| 1979 | 6 | 0 |
| 1980 | 8 | 0 |
| 1981 | 14 | 0 |
| 1982 | 13 | 0 |
| 1983 | 13 | 0 |
| 1984 | 17 | 0 |
| 1985 | 14 | 0 |
| 1986 | 22 | 0 |
| 1987 | 23 | 0 |
| 1988 | 13 | 0 |
| 1989 | 15 | 0 |
| 1990 | 15 | 0 |
| 1991 | 11 | 0 |
| 1992 | 9 | 0 |
| 1993 | 13 | 0 |
| 1994 | 9 | 0 |
| 1995 | 16 | 0 |
| 1996 | 14 | 0 |
| 1997 | 12 | 0 |
| 1998 | 12 | 0 |
| 1999 | 12 | 0 |
| 2000 | 6 | 0 |
| 2001 | 12 | 1 |
| 2002 | 7 | 9 |
| 2003 | 9 | 17 |
| 2004 | 5 | 6 |
| 2005 | 11 | 6 |
| 2006 | 5 | 8 |
| 2007 | 4 | 12 |
| 2008 | 3 | 9 |
| 2009 | 3 | 12 |
| 2010 | 5 | 10 |
| 2011 | 4 | 11 |
| 2012 | 12 | 16 |
| 2013 | 7 | 12 |
| 2014 | 8 | 23 |
| 2015 | 16 | 26 |
| 2016 | 15 | 19 |
| 2017 | 13 | 21 |
| 2018 | 19 | 22 |
| 2019 | 26 | 36 |
| 2020 | 23 | 34 |
| 2021 | 27 | 35 |
| 2022 | 24 | 28 |
| 2023 | 18 | 25 |
| 2024 | 33 | 21 |
| 2025 | 30 | 25 |
| 2026 | 11 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E21D 11/04Lining with building materials293
- E21D 11/38Waterproofing173
- E21D 11/14Lining predominantly with metal158
- E21D 11/006Lining anchored in the rock92
- E21D 11/40Devices or apparatus specially adapted for handling or placing units of linings85
- E21D 11/003Linings or provisions thereon, specially adapted for traffic tunnels12
- E21D 11/02Lining predominantly with wood3
Recent patents
- Double-liquid grouting slurry, its technology and application for super large diameter underwater shield engineering under high water pressure condition22 Sep 2026US 12,741,910 B2China Railway 14th Bureau Group Corporation Limited
- Structural system for building and civil engineering works and construction method15 Sep 2026US 12,735,889 B2
- 3D printing-based device for shield tunnel lining formation8 Sep 2026US 12,728,588 B2Zhejiang University City College
- Groove-type skeleton, sealed lining structure, underground gas storage and construction method11 Aug 2026US 12,704,067 B2Institute of Rock and Soil Mechanics, Chinese Academy of Sciences
- Tunnel constraint anchor cable and method for improving stability of initial support structure14 Jul 2026US 12,680,451 B2Chang An University
- Meshing plan update based on actual surface model of a rock surface1 Oct 2026US 2026/0298087 A1Sandvik Mining and Construction Oy
- Controlling mesh installation based on a mesh deformation parameter1 Oct 2026US 2026/0298088 A1Sandvik Mining and Construction Oy
- Self-launching formwork system and method for lining a tunnel17 Sep 2026US 2026/0275865 A1Grupo Empresarial Tecozam SL
- Inverted arch structure and construction method therefor3 Sep 2026US 2026/0258727 A1China University of Geosciences
- Meshing plan for controlling mesh installation6 Aug 2026US 2026/0226831 A1Sandvik Mining and Construction Oy
Most cited
By later US patents
- Water cutoff junction member for concrete products to be joined together198US 6,052,960 AYamax Corporation · 2000
- Method of lining a pipe194US 4,009,063 AInsituform (Pipes & Structures) Ltd. · 1977
- Anchored cable sling system90US 5,584,608 A1996
- Methods and apparatus for analyzing locate and marking operations with respect to environmental landmarks66US 8,612,271 B2CertusView Technologies, LLC · 2013
- Precompressed water and/or fire resistant tunnel expansion joint systems, and transitions64US 9,631,362 B2Emseal Joint Systems Ltd. · 2017