E21D 9/124
Helical conveying means therefor
Official title: {Helical conveying means therefor (E21D9/13 takes precedence)}
E21D9/124 (Helical conveying means therefor) appears on 25 US grants and 7 published applications in this corpus.
Search patents in E21D- Granted patents
- 25
- Published applications
- 7
- Assignees
- 19
- Inventors
- 65
- Latest grant
- 17 Sep 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 0 |
| 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 | 0 |
| 2012 | 1 | 0 |
| 2013 | 1 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Centrifugal intelligent construction device for excavation concrete structure, and application thereof17 Sep 2024US 12,091,974 B2Zhejiang University
- Mechanical tunneling apparatus and process for tunnel in quicksand stratum7 May 2024US 11,976,558 B2Shandong University
- Guiding type miniature pipe-jacking construction method31 May 2022US 11,346,218 B1Guangzhou Municipal Engineering Group Ltd.
- Method and device for transporting overburden away during tunnelling13 Dec 2016US 9,518,465 B2Herrenknecht AG
- Tunnel excavation apparatus and tunnel excavation method26 Aug 2014US 8,814,472 B2Kabuki Construction Co., Ltd.
- A centrifugal intelligent construction device for excavation concrete structure, and application thereof14 Mar 2024US 2024/0084701 A1Zhejiang University
- Mechanical tunneling apparatus and process for tunnel in quicksand stratum28 Dec 2023US 2023/0417139 A1Shandong University
- Foam generator for an earth pressure balance shield tunnel boring machine and method for conditioning removed soil material as a supporting medium for an earth pressure balance shield9 Mar 2017US 2017/0067339 A1Mc-Bauchemie MüLler GmbH & Co. KG
- Auger Boring Machine31 Mar 2016US 2016/0090831 A1American Augers, Inc.
- Method and device for transporting overburden away during tunnelling20 Aug 2015US 2015/0233243 A1Herrenknecht AG
Most cited
By later US patents
- Shield tunnel boring machine23US 4,607,889 ADaiho Construction Co., Ltd. · 1986
- Tunnelling head and method19US 5,470,132 A1995
- Device for removing the earth generated by tunneling10US 4,226,477 A1980
- Soil transporting vehicle for transporting soils excavated by shield machine10US 4,407,622 AOkumura Corporation · 1983
- Shield tunnelling machine10US 5,123,708 AKabushiki Kaisha Iseki Kaihatsu Koki · 1992