F42D 1/05
Electric circuits for blasting
F42D1/05 (Electric circuits for blasting) appears on 522 US grants and 449 published applications in this corpus.
Search patents in F42D- Granted patents
- 522
- Published applications
- 449
- Assignees
- 194
- Inventors
- 701
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 5 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 7 | 0 |
| 1989 | 7 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 8 | 0 |
| 1995 | 5 | 0 |
| 1996 | 10 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 2 |
| 2002 | 8 | 4 |
| 2003 | 7 | 9 |
| 2004 | 5 | 6 |
| 2005 | 9 | 26 |
| 2006 | 14 | 14 |
| 2007 | 6 | 9 |
| 2008 | 10 | 13 |
| 2009 | 9 | 12 |
| 2010 | 10 | 13 |
| 2011 | 12 | 15 |
| 2012 | 10 | 22 |
| 2013 | 13 | 20 |
| 2014 | 16 | 15 |
| 2015 | 20 | 17 |
| 2016 | 17 | 19 |
| 2017 | 23 | 17 |
| 2018 | 14 | 20 |
| 2019 | 27 | 21 |
| 2020 | 13 | 21 |
| 2021 | 18 | 40 |
| 2022 | 37 | 32 |
| 2023 | 24 | 23 |
| 2024 | 33 | 30 |
| 2025 | 37 | 20 |
| 2026 | 15 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Perforating gun and ballistic interrupter for same6 Oct 2026US 12,753,681 B2Oso Perforating, LLC
- Single-capacitor electronic detonator and system for firing such single-capacitor electronic detonators4 Aug 2026US 12,698,954 B2Davey Bickford
- Blast determination system21 Jul 2026US 12,687,379 B2Dyno Nobel Inc.
- Velocity of detonation measurement16 Jun 2026US 12,656,095 B2Detnet South Africa (Pty) Ltd
- Communications in electronic detonators26 May 2026US 12,638,283 B2Austin Star Detonator Company
- Mixed blasting system6 Aug 2026US 2026/0227166 A1Detnet South Africa (Pty) Ltd
- Wireless detonator consolidation30 Jul 2026US 2026/0219017 A1
- Reusable perforating gun system and method16 Jul 2026US 2026/0201780 A1G&H Diversified Manufacturing LP
- Landmine destruction ball2 Jul 2026US 2026/0185808 A1Siyehtech LLC
- Multi-atmospheric safe firing control circuit for wireless detonators and initiators2 Jul 2026US 2026/0185811 A1Down Range Systems LLC
Most cited
By later US patents
- Detonator actuator151US 5,090,321 AICI Australia Limited · 1992
- Firing system for a perforating gun including an exploding foil initiator and an outer housing for conducting wireline current and EFI current131US 5,347,929 ASchlumberger Technology Corporation · 1994
- Remote detonation of explosive charges130US 4,884,506 AElectronic Warfare Associates, Inc. · 1989
- Integrated detonator delay circuits and firing console127US 4,674,047 AThe Curators of the University of Missouri · 1987
- Digital remote pyrotactic firing mechanism125US 5,767,437 A1998