E21D 9/006
Tunnels or galleries, with or without linings: by making use of blasting
Official title: {by making use of blasting methods (explosive compositions C06B; blasting per se F42)}
E21D9/006 (Tunnels or galleries, with or without linings: by making use of blasting) appears on 75 US grants and 73 published applications in this corpus.
Search patents in E21D- Granted patents
- 75
- Published applications
- 73
- Assignees
- 67
- Inventors
- 235
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 1 | 6 |
| 2011 | 2 | 0 |
| 2012 | 2 | 0 |
| 2013 | 4 | 5 |
| 2014 | 0 | 2 |
| 2015 | 2 | 0 |
| 2016 | 0 | 1 |
| 2017 | 2 | 5 |
| 2018 | 2 | 4 |
| 2019 | 7 | 5 |
| 2020 | 3 | 3 |
| 2021 | 1 | 2 |
| 2022 | 4 | 10 |
| 2023 | 6 | 5 |
| 2024 | 11 | 10 |
| 2025 | 4 | 4 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for evaluating deep-buried tunnel blasting parameters23 Jun 2026US 12,663,248 B2Sichuan University
- Triggering explosives in holes9 Jun 2026US 12,650,284 B2Olitek Pty Ltd
- Apparatus, rock drilling rig and drilling method5 May 2026US 12,618,290 B2Sandvik Mining and Construction Oy
- Systems for automated blast design planning and methods related thereto14 Apr 2026US 12,602,519 B2Dyno Nobel Inc.
- Method and device for identifying full-section excavation parameters of large-section tunnel with broken surrounding rock22 Jul 2025US 12,366,679 B2China Railway Eleventh Bureau Group Co., Ltd
- Method and system for predicting blasting vibration inside surrounding rocks in deep buried tunnels1 Oct 2026US 2026/0298084 A1Northeastern University
- Triggering explosives in holes17 Sep 2026US 2026/0276352 A1Olitek Pty Ltd
- Rockburst control method for advanced blasting pressure relief of tunnel face under asymmetric high stress30 Jul 2026US 2026/0218613 A1Northeastern University
- Apparatus and methods for drilled hole locating and assessing, and payload delivery into a hole23 Jul 2026US 2026/0208654 A1Jevons IP Pty Limited
- Feeder pole apparatus, method of use and manufacture thereof19 Feb 2026US 2026/0049553 A1Innovative Blasting Technologies Pty Ltd
Most cited
By later US patents
- Control method for drilling apparatus which makes use of a final drilling pattern transformed from primary and secondary patterns23US 4,639,868 AMazda Motor Corporation · 1987
- Excavation apparatus and method20US 4,040,355 AHercules Incorporated · 1977
- Method for controlling a drilling sequence, a rock drilling apparatus and a computer programme to form a drilling sequence17US 6,957,707 B2Sandvik Intellectual Property AB · 2005
- Device and process13US 3,952,656 AImperial Chemical Industries of Australia and New Zealand Limited · 1976
- Designing drilling pattern for excavating rock cavern11US 8,392,014 B2Sandvik Mining and Construction Oy · 2013