E21D 9/1053
For making a slit along the perimeter of the tunnel profile, the
Official title: {for making a slit along the perimeter of the tunnel profile, the remaining core being removed subsequently, e.g. by blasting}
E21D9/1053 (For making a slit along the perimeter of the tunnel profile, the) appears on 18 US grants and 11 published applications in this corpus.
Search patents in E21D- Granted patents
- 18
- Published applications
- 11
- Assignees
- 12
- Inventors
- 38
- Latest grant
- 30 Jul 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 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 | 1 | 1 |
| 2002 | 2 | 1 |
| 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 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 3 | 2 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 3 |
| 2022 | 3 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Projectile augmented boring system30 Jul 2024US 12,049,825 B2Hypersciences, Inc.
- Wire saw excavation apparatus capable of changing cutting line in accordance with cutting section and tunnel excavation method using same18 Oct 2022US 11,472,063 B2
- Tunnel boring machine20 Sep 2022US 11,448,069 B2
- Tunneling device for pipe jacking and its construction method8 Feb 2022US 11,242,748 B2
- Method for wire saw excavation29 Sep 2015US 9,144,921 B2King Fahd University of Petroleum and Minerals
- Tunnel Extraction Machine (TEM)7 Mar 2024US 2024/0076983 A1TopEng Inc.
- Wire saw excavation apparatus capable of changing cutting line in accordance with cutting section and tunnel excavation method using same11 Nov 2021US 2021/0348510 A1
- Projectile augmented boring system20 May 2021US 2021/0148229 A1Hypersciences, Inc.
- Tunnel Boring Machine20 May 2021US 2021/0148230 A1
- Tunneling Device for Pipe Jacking and Its Construction Method19 Dec 2019US 2019/0383142 A1
Most cited
By later US patents
- Method of and apparatus for building thin lining on tunnel6US 4,666,336 AOkumura Corporation · 1987
- Method and device for producing underground cavities using a driving shield5US 4,260,194 AMesserschmitt-Bolkow-Blohm GmbH · 1981
- Method and apparatus for tunnelling3US 5,104,260 ATrevi S.p.A. · 1992
- Tunnel excavation apparatus3US 5,382,114 ATrevi S.p.A. · 1995
- Method for widening road, superhighway or railway tunnels, without interrupting the traffic3US 6,375,390 B12002