F42C 21/00
Checking fuzes
Official title: Checking fuzes; Testing fuzes
F42C21/00 (Checking fuzes) appears on 46 US grants and 21 published applications in this corpus.
Search patents in F42C- Granted patents
- 46
- Published applications
- 21
- Assignees
- 38
- Inventors
- 105
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 1 |
| 2018 | 2 | 2 |
| 2019 | 3 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 1 |
| 2022 | 2 | 3 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 2 | 4 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for testing optical proximity fuses17 Feb 2026US 12,553,697 B2Rafael Advanced Defense Systems Ltd.
- Addressable switch with initiator detection and initiator resistance measurement22 Jul 2025US 12,366,144 B2Hunting Titan, Inc.
- Control module for a detonation sub and a detonation sub22 Jul 2025US 12,366,145 B2
- Test and/or practice ammunition10 Sep 2024US 12,085,375 B2Rheinmetall Waffe Munition GmbH
- Pyrotechnic system28 Jun 2022US 11,371,813 B2Info Wise Limited
- Autonomous pyrotechnic igniter simulator21 May 2026US 2026/0139933 A1Mbda France
- Device and method thereof for monitoring cloud-based electronic detonators6 Nov 2025US 2025/0342220 A1Hanwha Corporation
- System and method for testing optical proximity fuses19 Jun 2025US 2025/0198734 A1Rafael Advanced Defense Systems Ltd.
- Addressable Switch with Initiator Detection and Initiator Resistance Measurement23 Jan 2025US 2025/0027391 A1Hunting Titan, Inc.
- Addressable Switch with Initiator Detection and Initiator Resistance Measurement23 Jan 2025US 2025/0027392 A1Hunting Titan, Inc.
Most cited
By later US patents
- Laser initiated ordnance systems84US 5,206,455 AQuantic Industries, Inc. · 1993
- Detonating cord and continuity verification system29US 4,455,941 A1984
- Safety apparatus28US 5,007,661 ATRW Vehicle Safety Systems Inc. · 1991
- Detonating cord and continuity verification system21US 4,403,143 AResearch Energy of Ohio, Inc. · 1983
- Method and arrangement for implementing an operational test on electrically-actuatable ignition circuits for ammunition18US 4,776,277 ADiehl GmbH & Co. · 1988