F42D 1/18
Plugs for boreholes
F42D1/18 (Plugs for boreholes) appears on 48 US grants and 44 published applications in this corpus.
Search patents in F42D- Granted patents
- 48
- Published applications
- 44
- Assignees
- 38
- Inventors
- 99
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 2 |
| 2010 | 1 | 1 |
| 2011 | 1 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 2 |
| 2015 | 0 | 3 |
| 2016 | 1 | 2 |
| 2017 | 4 | 3 |
| 2018 | 0 | 2 |
| 2019 | 2 | 3 |
| 2020 | 3 | 5 |
| 2021 | 3 | 1 |
| 2022 | 1 | 2 |
| 2023 | 1 | 3 |
| 2024 | 6 | 3 |
| 2025 | 2 | 4 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Blasthole stemming based on formaldehyde resins, system and charging method6 Oct 2026US 12,754,001 B2Oxiquim S.A.
- Inflatable down hole bag12 May 2026US 12,624,612 B2Mti Group Pty Ltd
- Wedging arrangement to plug a blast hole6 May 2025US 12,292,271 B2
- Blasting system and a method of explosive material charging28 Jan 2025US 12,209,852 B2Luossavaara-Kiirunavaara AB
- Primer delivery systems and methods15 Oct 2024US 12,117,282 B2Dyno Nobel Asia Pacific Pty Limited
- Inflatable down hole bag24 Sep 2026US 2026/0286806 A1Mti Group Pty Ltd
- Inflatable down hole bag20 Nov 2025US 2025/0354450 A1Mti Group Pty Ltd
- Blasthole stemming based on formaldehyde resins, system and charging method20 Nov 2025US 2025/0354790 A1Oxiquim S.A.
- System and Method for the Robotic Loading of Explosives in Underground Mining4 Sep 2025US 2025/0277446 A1Enaex Servicios S.A.
- Blasting system and a method of explosive material charging31 Jul 2025US 2025/0244116 A1Luossavaara-Kiirunavaara AB
Most cited
By later US patents
- Loading of boreholes with flowable explosives25US 5,524,523 AAECI Limited · 1996
- Tamp hole plug system and method15US 4,736,796 A1988
- Device and process13US 3,952,656 AImperial Chemical Industries of Australia and New Zealand Limited · 1976
- Inflatable devices for suspending explosives in boreholes13US 5,000,261 A1991
- Blast plug and stemming construction for blast holes13US 5,247,886 AThe Curators of the University of Missouri · 1993