F42D 1/26
Tamping with foaming agents
F42D1/26 (Tamping with foaming agents) appears on 8 US grants and 2 published applications in this corpus.
Search patents in F42D- Granted patents
- 8
- Published applications
- 2
- Assignees
- 6
- Inventors
- 15
- 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 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 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 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 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 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
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.
- Composition and method for blast hole loading5 Mar 2019US 10,222,191 B2Blast Boss PTY LTD
- Foam formulations29 Apr 2003US 6,553,887 B1Her Majesty the Queen in right of Canada, as represented by the Solicitor General acting through the Commissioner of the Royal Canadian Mounted Police
- Inflatable plug assembly for borehole16 Oct 2001US 6,302,202 B1
- Mine shaft and adit closure apparatus and method8 Sep 1998US 5,803,172 AFoam Concepts, Inc.
Most cited
By later US patents
- 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
- Sound attenuation with foam12US 4,964,329 AThe Broken Hill Proprietary Company Limited · 1990
- Expansion foam borehole plug and method12US 5,497,829 AFoam Concepts, Inc. · 1996
- Foam formulations8US 6,553,887 B1Her Majesty the Queen in right of Canada, as represented by the Solicitor General acting through the Commissioner of the Royal Canadian Mounted Police · 2003