E21D 9/0879
The shield being provided with devices for lining the tunnel
Official title: {the shield being provided with devices for lining the tunnel, e.g. shuttering}
E21D9/0879 (The shield being provided with devices for lining the tunnel) appears on 72 US grants and 16 published applications in this corpus.
Search patents in E21D- Granted patents
- 72
- Published applications
- 16
- Assignees
- 51
- Inventors
- 169
- Latest grant
- 16 Jul 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 2 |
| 2006 | 3 | 0 |
| 2007 | 0 | 1 |
| 2008 | 2 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 4 |
| 2015 | 3 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 2 |
| 2020 | 3 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Hypergravity model test device and method for simulating progressive failure of shield tunnel face16 Jul 2024US 12,037,907 B2Powerchina Huadong Engineering Corporation Limited
- Tunnel digging machine (TDM)20 Feb 2024US 11,905,835 B1
- Laser-assisted tunnel boring machine and rock fragmenting method therefor12 May 2020US 10,648,334 B2Dalian University of Technology
- Tunnel boring machine5 May 2020US 10,641,093 B2Hitachi Zosen Corporation
- Tunnel boring machine21 Jan 2020US 10,539,016 B2Xcmg-Kaigong Heavy Industry Nanjing Co., Ltd
- Hypergravity model test device and method for simulating progressive failure of shield tunnel face21 Jul 2022US 2022/0228486 A1Powerchina Huadong Engineering Corporation Limited
- Tunnel boring machine29 Aug 2019US 2019/0264563 A1Xcmg-Kaigong Heavy Industry Nanjing Co., Ltd
- Laser-assisted tunnel boring machine and rock fragmenting method therefor17 Jan 2019US 2019/0017380 A1Dalian University of Technology
- Tunnel boring machine13 Sep 2018US 2018/0258765 A1Hitachi Zosen Corporation
- Compound-Type Tunnelling Shield7 Jul 2016US 2016/0194957 A1China Rail Way Engineering Equipment Group Co., Ltd.
Most cited
By later US patents
- Shielded cutterhead with small rolling disc cutters35US 5,961,185 AExcavation Engineering Associates, Inc. · 1999
- Tunnel boring machine with crusher29US 6,017,095 A2000
- Shield tunneling machine25US 4,655,493 AKabushiki Kaisha Iseki Kaihatsu Koki · 1987
- Shield tunneling machine24US 4,456,305 AHitachi Shipbuilding & Engineering Co., Ltd. · 1984
- Shield tunnel boring machine23US 4,607,889 ADaiho Construction Co., Ltd. · 1986