F42B 21/00
Depth charges
Official title: Depth charges (F42B12/00 takes precedence; for practice or training F42B8/28; laying aspects B63G)
F42B21/00 (Depth charges) appears on 21 US grants and 18 published applications in this corpus.
Search patents in F42B- Granted patents
- 21
- Published applications
- 18
- Assignees
- 7
- Inventors
- 46
- Latest grant
- 22 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 2 | 1 |
| 2012 | 0 | 2 |
| 2013 | 0 | 0 |
| 2014 | 0 | 2 |
| 2015 | 1 | 0 |
| 2016 | 1 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 8 |
| 2023 | 3 | 2 |
| 2024 | 5 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Base part for producing a cartridge case and cartridge case, method for producing a base part for a cartridge case, and method for producing a cartridge case22 Jul 2025US 12,366,438 B2Diehl Metall Stiftung & Co. KG
- Programmable system and method for a munition31 Dec 2024US 12,181,264 B2BAE SYSTEMS plc
- Munitions and projectiles24 Dec 2024US 12,173,995 B2BAE SYSTEMS plc
- Reconnaissance and communication assembly14 May 2024US 11,982,519 B2BAE SYSTEMS plc
- Reconnaissance and communication assembly20 Feb 2024US 11,906,274 B2BAE SYSTEMS plc
- Anti torpedo system6 Jun 2024US 2024/0182145 A1BAE SYSTEMS plc
- Base part for producing a cartridge case and cartridge case, method for producing a base part for a cartridge case, and method for producing a cartridge case20 Apr 2023US 2023/0124564 A1Diehl Metall Stiftung & Co. KG
- Underwater apparatus23 Feb 2023US 2023/0058795 A1
- A reconnaissance and communication assembly13 Oct 2022US 2022/0325995 A1BAE SYSTEMS plc
- A reconnaissance and communication assembly6 Oct 2022US 2022/0316847 A1BAE SYSTEMS plc
Most cited
By later US patents
- Water reactive underwater warhead27US 4,188,884 AThe United States of America as represented by the Secretary of the Navy · 1980
- Underwater explosive device6US 6,354,220 B1Atlantic Research Corporation · 2002
- Underwater missile for use against submerged submarines5US 4,433,626 A1984
- Missile delivered explosive sound system5US 4,478,148 AThe United States of America as represented by the Secretary of the Navy · 1984
- Munitions and projectiles3US 11,821,716 B2BAE SYSTEMS plc · 2023