F42B 3/18
Safety initiators resistant to premature firing by static electricity or stray currents
F42B3/18 (Safety initiators resistant to premature firing by static electricity or stray currents) appears on 203 US grants and 105 published applications in this corpus.
Search patents in F42B- Granted patents
- 203
- Published applications
- 105
- Assignees
- 122
- Inventors
- 396
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 7 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 8 | 0 |
| 1993 | 4 | 0 |
| 1994 | 9 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 6 | 0 |
| 1998 | 2 | 0 |
| 1999 | 6 | 0 |
| 2000 | 4 | 0 |
| 2001 | 13 | 4 |
| 2002 | 10 | 7 |
| 2003 | 7 | 2 |
| 2004 | 2 | 6 |
| 2005 | 1 | 2 |
| 2006 | 1 | 2 |
| 2007 | 0 | 2 |
| 2008 | 1 | 4 |
| 2009 | 1 | 2 |
| 2010 | 2 | 5 |
| 2011 | 7 | 6 |
| 2012 | 10 | 8 |
| 2013 | 6 | 6 |
| 2014 | 5 | 10 |
| 2015 | 9 | 4 |
| 2016 | 9 | 6 |
| 2017 | 5 | 6 |
| 2018 | 3 | 3 |
| 2019 | 6 | 6 |
| 2020 | 7 | 2 |
| 2021 | 1 | 3 |
| 2022 | 3 | 2 |
| 2023 | 2 | 2 |
| 2024 | 4 | 0 |
| 2025 | 0 | 2 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Shunt cap for safe discharge of low-voltage detonators16 Jun 2026US 12,656,089 B1Kraken Kinetics Inc.
- Conductive actuator housings and related airbag assemblies8 Oct 2024US 12,109,971 B2Autoliv ASP, Inc.
- RF attenuating switch3 Sep 2024US 12,078,461 B2Schlumberger Technology Corporation
- Fluid-disabled detonator and perforating gun assembly16 Apr 2024US 11,959,366 B2DynaEnergetics Europe GmbH
- Modular initiator2 Jan 2024US 11,859,471 B2Hunting Titan, Inc.
- Multi-atmospheric safe firing control circuit for wireless detonators and initiators2 Jul 2026US 2026/0185811 A1Down Range Systems LLC
- Semiconductor bridge with static discharge protection and the method of the same4 Jun 2026US 2026/0153312 A1Hangzhou Dianzi University
- Compact electric detonator with built-in electromagnetic interference (emi) filter and method of assembling the same12 Mar 2026US 2026/0071856 A1Agency for Defense Development
- Single-capacitor electronic detonator and system for firing such single-capacitor electronic detonators26 Jun 2025US 2025/0207899 A1Davey Bickford
- Ignition agent and igniter including the same9 Jan 2025US 2025/0011256 A1Nippon Kayaku Kabushiki Kaisha
Most cited
By later US patents
- Electric primer219US 6,272,993 B1RA Brands, L.L.C. · 2001
- Detonator assembly102US 5,060,573 AGoex International, Inc. · 1991
- Wireless detonator assembly, and methods of blasting93US 7,568,429 B2Orica Explosives Technology Pty Ltd · 2009
- Detonation command and control92US 9,181,790 B2Los Alamos National Security, LLC · 2015
- Non-energetics based detonator87US 8,661,978 B2Battelle Memorial Institute · 2014