F42B 3/24
Cartridge closures or seals
Official title: Cartridge closures or seals (top closures for shotgun ammunition cartridges F42B7/12)
F42B3/24 (Cartridge closures or seals) appears on 52 US grants and 47 published applications in this corpus.
Search patents in F42B- Granted patents
- 52
- Published applications
- 47
- Assignees
- 32
- Inventors
- 77
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 2 |
| 2005 | 1 | 1 |
| 2006 | 1 | 3 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 4 | 2 |
| 2010 | 1 | 2 |
| 2011 | 2 | 2 |
| 2012 | 4 | 3 |
| 2013 | 1 | 0 |
| 2014 | 2 | 8 |
| 2015 | 3 | 2 |
| 2016 | 4 | 3 |
| 2017 | 3 | 3 |
| 2018 | 2 | 2 |
| 2019 | 4 | 3 |
| 2020 | 0 | 3 |
| 2021 | 4 | 2 |
| 2022 | 3 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Gas generator11 Aug 2026US 12,703,318 B2Nippon Kayaku Kabushiki Kaisha
- Explosive material charging device for charging a borehole method of positioning an explosive material charging device explosive material charging vehicle and data medium5 May 2026US 12,618,657 B2Luossavaara-Kiirunavaara AB
- Explosive material charging device for charging a borehole method of positioning an explosive material charging device explosive material charging vehicle and data medium24 Dec 2024US 12,174,002 B2Luossavaara-Kiirunavaara AB
- Apparatus and methods for disrupting/disabling explosive ordnance22 Nov 2022US 11,506,465 B1The United States of America as represented by the Secretary of the Navy
- Closure member and encapsulated slotted shaped charge with closure member8 Nov 2022US 11,492,877 B2DynaEnergetics Europe GmbH
- Gas generator15 Jan 2026US 2026/0014957 A1Nippon Kayaku Kabushiki Kaisha
- Explosive material charging device for charging a borehole method of positioning an explosive material charging device explosive material charging vehicle and data medium12 Jun 2025US 2025/0189286 A1Luossavaara-Kiirunavaara AB
- Explosive material charging device for charging a borehole method of positioning an explosive material charging device explosive material charging vehicle and data medium7 Dec 2023US 2023/0392913 A1Luossavaara-Kiirunavaara AB
- Canister assembly with protected cap well and booster explosive comprising the same30 Dec 2021US 2021/0404778 A1Dyno Nobel Inc.
- Closure member and encapsulated slotted shaped charge with closure member3 Jun 2021US 2021/0164330 A1DynaEnergetics Europe GmbH
Most cited
By later US patents
- High strength polymer-based cartridge casing and manufacturing method256US 8,443,730 B2PCP Tactical, LLC · 2013
- Adhesive lip for a high strength polymer-based cartridge casing and manufacturing method224US 8,875,633 B2PCP Tactical, LLC · 2014
- Base insert for polymer ammunition cartridges171US 9,599,443 B2PCP Tactical, LLC · 2017
- End cap for a propellant container113US 4,370,930 AFord Motor Company · 1983
- Detonation command and control92US 9,181,790 B2Los Alamos National Security, LLC · 2015