F42B 3/122
Programmable electronic delay initiators
Official title: {Programmable electronic delay initiators}
F42B3/122 (Programmable electronic delay initiators) appears on 66 US grants and 38 published applications in this corpus.
Search patents in F42B- Granted patents
- 66
- Published applications
- 38
- Assignees
- 36
- Inventors
- 108
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 6 |
| 2006 | 2 | 2 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 2 | 2 |
| 2010 | 1 | 0 |
| 2011 | 0 | 2 |
| 2012 | 3 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 2 |
| 2016 | 3 | 1 |
| 2017 | 3 | 2 |
| 2018 | 3 | 4 |
| 2019 | 2 | 2 |
| 2020 | 2 | 3 |
| 2021 | 2 | 3 |
| 2022 | 4 | 2 |
| 2023 | 2 | 2 |
| 2024 | 2 | 1 |
| 2025 | 4 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Shock initiation of non-electric shock tube5 May 2026US 12,618,655 B1Honeywell Federal Manufacturing & Technologies, LLC
- Non-explosive programmable electronic initiation system for rock blasting2 Dec 2025US 12,487,063 B2Comercializadora Exoblast Chile S.P.A.
- Enhanced safety and reliability for a networked detonator blasting system25 Nov 2025US 12,480,752 B2Austin Star Detonator Company
- Wireless initiation device27 May 2025US 12,313,391 B2Orica International Pte Ltd
- Shock initiation of non-electric shock tube25 Feb 2025US 12,235,089 B1Honeywell Federal Manufacturing & Technologies, LLC
- Wireless initiation device21 Aug 2025US 2025/0264316 A1Orica International Pte Ltd
- Enhanced safety and reliability for a networked detonator blasting system22 Feb 2024US 2024/0060760 A1Austin Star Detonator Company
- Non-explosive programmable electronic initiation system for rock blasting21 Dec 2023US 2023/0408230 A1Comercializadora Exoblast Chile S.P.A.
- Electronic ignition circuit28 Sep 2023US 2023/0304782 A1DynaEnergetics Europe GmbH
- Wireless initiation device28 Apr 2022US 2022/0128343 A1Orica International Pte Ltd
Most cited
By later US patents
- Detonator actuator151US 5,090,321 AICI Australia Limited · 1992
- Integrated detonator delay circuits and firing console127US 4,674,047 AThe Curators of the University of Missouri · 1987
- Method of detonator control with electronic ignition module, coded blast controlling unit and ignition module for its implementation106US 6,173,651 B1Davey Bickford · 2001
- Electronic explosives initiating device100US 6,085,659 AOrica Explosives Technology Pty Ltd · 2000
- Integrated detonators for use with explosive devices91US 8,091,477 B2Schlumberger Technology Corporation · 2012