F42B 3/198
Of electric initiator heads e.g., testing, machines
Official title: of electric initiator heads {e.g., testing, machines}
F42B3/198 (Of electric initiator heads e.g., testing, machines) appears on 68 US grants and 59 published applications in this corpus.
Search patents in F42B- Granted patents
- 68
- Published applications
- 59
- Assignees
- 44
- Inventors
- 127
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 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 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 5 |
| 2003 | 2 | 1 |
| 2004 | 4 | 5 |
| 2005 | 4 | 4 |
| 2006 | 2 | 3 |
| 2007 | 1 | 2 |
| 2008 | 0 | 4 |
| 2009 | 3 | 3 |
| 2010 | 2 | 4 |
| 2011 | 3 | 0 |
| 2012 | 5 | 2 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 1 | 2 |
| 2016 | 1 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 4 |
| 2019 | 4 | 3 |
| 2020 | 3 | 2 |
| 2021 | 3 | 4 |
| 2022 | 2 | 1 |
| 2023 | 1 | 0 |
| 2024 | 2 | 4 |
| 2025 | 4 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Preload cable, detonator cable assembly, and methods of making the same20 Jan 2026US 12,529,547 B1Honeywell Federal Manufacturing & Technologies, LLC
- Detonator assembly for a perforating gun assembly30 Dec 2025US 12,509,970 B2Halliburton Energy Services.Inc.
- Initiator for a gas generator of a vehicle safety device17 Jun 2025US 12,330,582 B1Autoliv ASP, Inc.
- Electrical contact for perforating gun assembly3 Jun 2025US 12,320,203 B2Halliburton Energy Services.Inc.
- Initiator head with circuit board29 Apr 2025US 12,287,182 B2DynaEnergetics Europe GmbH
- Initiator head with circuit board10 Jul 2025US 2025/0224215 A1DynaEnergetics Europe GmbH
- Initiator For A Gas Generator Of A Vehicle Safety Device19 Jun 2025US 2025/0196799 A1Autoliv ASP, Inc.
- Initiator, initiator device, and method for manufacturing initiator29 May 2025US 2025/0172373 A1Daicel Corporation
- Metal fixing material leadthrough having low susceptibility to faults14 Nov 2024US 2024/0379340 A1Schott AG
- Electrical Contact For Perforating Gun Assembly27 Jun 2024US 2024/0209694 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Detonators for use with explosive devices136US 6,752,083 B1Schlumberger Technology Corporation · 2004
- Modular initiator123US 8,256,337 B2Baker Hughes Incorporated · 2012
- Initiation of explosive devices91US 6,386,108 B12002
- Switches for use in tools84US 6,385,031 B1Schlumberger Technology Corporation · 2002
- Pyrotechnic detonator using coaxial connections70US 5,204,491 AThomson-Brandt Armements · 1993