F42D 1/24
Characterised by the tamping material
Official title: characterised by the tamping material
F42D1/24 (Characterised by the tamping material) appears on 29 US grants and 22 published applications in this corpus.
Search patents in F42D- Granted patents
- 29
- Published applications
- 22
- Assignees
- 24
- Inventors
- 59
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 4 |
| 2012 | 2 | 0 |
| 2013 | 1 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 1 | 1 |
| 2020 | 0 | 2 |
| 2021 | 3 | 3 |
| 2022 | 2 | 2 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 2 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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
- Gel stemming delivery system3 Jun 2025US 12,320,626 B2PWS - Stemsafe JV Pty Ltd
- Breaching device with tamping gel5 Nov 2024US 12,135,199 B2Esoteric, LLC
- Tamp for explosive material7 Nov 2023US 11,808,559 B2River Front Services, Inc.
- Breaching Device with Tamping Gel14 May 2026US 2026/0133020 A1Esoteric, LLC
- 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.
- Modular rapid deployment charges11 Apr 2024US 2024/0118065 A1Breacher's Hardware LLC
- Gel stemming delivery system1 Dec 2022US 2022/0381544 A1PWS - Stemsafe JV Pty Ltd
Most cited
By later US patents
- Disintegrating tamper mass25US 4,628,819 AThe United States of America as represented by the Secretary of the Navy · 1986
- Device and process13US 3,952,656 AImperial Chemical Industries of Australia and New Zealand Limited · 1976
- Mine shaft and adit closure apparatus and method13US 5,803,172 AFoam Concepts, Inc. · 1998
- Breaching apparatus for use with explosive charges13US 8,267,013 B2New World Manufacturing, Inc. · 2012
- Sound attenuation with foam12US 4,964,329 AThe Broken Hill Proprietary Company Limited · 1990