E21D 11/083
Methods or devices for joining adjacent concrete segments
Official title: {Methods or devices for joining adjacent concrete segments}
E21D11/083 (Methods or devices for joining adjacent concrete segments) appears on 46 US grants and 34 published applications in this corpus.
Search patents in E21D- Granted patents
- 46
- Published applications
- 34
- Assignees
- 52
- Inventors
- 118
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 0 |
| 2003 | 2 | 2 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 2 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 2 |
| 2014 | 1 | 2 |
| 2015 | 0 | 1 |
| 2016 | 0 | 2 |
| 2017 | 0 | 1 |
| 2018 | 1 | 2 |
| 2019 | 1 | 3 |
| 2020 | 2 | 4 |
| 2021 | 0 | 3 |
| 2022 | 3 | 1 |
| 2023 | 2 | 1 |
| 2024 | 1 | 1 |
| 2025 | 3 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Articulated prestressing tensioning device for shield tunnels and reinforcement method thereof2 Sep 2025US 12,404,771 B1Fujian University of Technology
- Control apparatus and method for buoyancy adjustment of shield tunnel segments29 Jul 2025US 12,371,994 B2Shenzhen Campus of Sun Yat-sen university
- System and method for simultaneous excavation and segment erection of TBM by thrust shell28 Jan 2025US 12,209,498 B2
- Apparatus and methods for underground structures and construction thereof30 Jan 2024US 11,885,224 B2
- Composite support structure, construction system, and method29 Aug 2023US 11,739,639 B2Engineering Appraisal and Reinforcement Institute Co.,Ltd, Shandong Jianzhu University
- Tunnel lining element28 May 2026US 2026/0146534 A1Herrenknecht AG
- Tunnel construction method and machine9 Apr 2026US 2026/0098474 A1MACCAFERRI TUNNELING S.r.l.
- Control apparatus and method for buoyancy adjustment of shield tunnel segments27 Feb 2025US 2025/0067177 A1Shenzhen Campus of Sun Yat-sen university
- Apparatus and Methods for Underground Structures and Construction Thereof14 Nov 2024US 2024/0376821 A1
- System and method for simultaneous excavation and segment erection of TBM by Thrust shell19 Oct 2023US 2023/0332504 A1Jamal Rostami Engineering Services LLC
Most cited
By later US patents
- Prefabricated support and covering structure, particularly for constructing tunnels, bridges and the like22US 4,693,634 ATensiter S.p.A. · 1987
- Method and apparatus for tunnel lining21US 4,830,536 ACommercial Shearing, Inc. · 1989
- Method of manufacturing a tunnel or shaft lining or pipeline17US 6,328,501 B1Tarmac Heavy Building Materials UK Limited · 2001
- Cast concrete element for underground tubular structure16US 4,477,204 A1984
- Tunnel lining15US 4,104,885 AFairclough Construction Group Limited · 1978