E21D 9/1066
With fluid jets
Official title: {with fluid jets (projecting hot gases E21D9/1073; drilling by liquid or gas jets E21B7/18; slitting by liquid jets E21C25/60)}
E21D9/1066 (With fluid jets) appears on 35 US grants and 19 published applications in this corpus.
Search patents in E21D- Granted patents
- 35
- Published applications
- 19
- Assignees
- 32
- Inventors
- 94
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 1 |
| 2018 | 2 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 1 |
| 2021 | 3 | 3 |
| 2022 | 2 | 1 |
| 2023 | 1 | 2 |
| 2024 | 2 | 3 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Tunnel boring machine equipped with high-pressure water jet cutting system and combined tunneling method27 Jan 2026US 12,535,004 B2Shandong University
- Hydraulic fracturing and cutting cooperative device suitable for hard rock and use method thereof7 Jan 2025US 12,188,339 B2China University of Mining and Technology
- Roadway/tunnel excavation robot and automatic cutting control method17 Sep 2024US 12,091,977 B2China University of Mining and Technology
- Hard rock tunnel boring machine combining microwave heating with high pressure water cutting for assisting in rock breaking9 Jul 2024US 12,031,437 B2China Railway Tunnel Group Co., Ltd.
- Tunnel boring system28 Feb 2023US 11,591,909 B2EarthGrid PBC
- Intelligent adaptive monitoring and control system for high-pressure jet excavation23 Jul 2026US 2026/0210246 A1Chongqing University
- Tunnel boring machine equipped with high-pressure water jet cutting system and combined tunneling method16 Oct 2025US 2025/0320818 A1Shandong University
- Hydraulic fracturing and cutting cooperative device suitable for hard rock and use method thereof28 Nov 2024US 2024/0392669 A1China University of Mining and Technology
- Roadway/tunnel excavation robot and automatic cutting control method2 May 2024US 2024/0141784 A1China University of Mining and Technology
- Tunnel Extraction Machine (TEM)7 Mar 2024US 2024/0076983 A1TopEng Inc.
Most cited
By later US patents
- Horizontal remote mining system, and method120US 5,879,057 AAmvest Corporation · 1999
- Method of removing snow from ground surface21US 4,271,617 A1981
- Method and device for breaking a hard compact material19US 4,195,885 AAtlas Copco AB · 1980
- Method and device for breaking a hard compact material14US 4,289,275 AAtlas Copco Aktiebolag · 1981
- Chisel for a percussive tool12US 4,280,572 ASalzgitter Maschinen und Anlagen Aktiengesellschaft · 1981