F42D 1/04

Arrangements for ignition

Official title: Arrangements for ignition {(ignition systems for shaped charge perforators E21B43/1185; ignition devices for seismic energy generators G01V1/06)}

F42D1/04 (Arrangements for ignition) appears on 1,091 US grants and 795 published applications in this corpus.

Search patents in F42D

Granted patents: 1,091
Published applications: 795
Assignees: 336
Inventors: 1,493
Latest grant: 6 Oct 2026

Filings by year

F42D 1/04: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	17	0
1977	15	0
1978	10	0
1979	10	0
1980	9	0
1981	8	0
1982	11	0
1983	9	0
1984	19	0
1985	15	0
1986	11	0
1987	18	0
1988	23	0
1989	16	0
1990	12	0
1991	30	0
1992	20	0
1993	8	0
1994	18	0
1995	18	0
1996	17	0
1997	11	0
1998	12	0
1999	5	0
2000	9	0
2001	16	2
2002	15	10
2003	17	16
2004	11	17
2005	13	39
2006	19	22
2007	10	18
2008	17	30
2009	18	16
2010	22	28
2011	22	17
2012	20	29
2013	19	29
2014	21	23
2015	33	35
2016	33	33
2017	38	39
2018	30	38
2019	44	48
2020	29	49
2021	44	69
2022	62	59
2023	49	33
2024	54	49
2025	60	32
2026	24	15

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.

Arrangements for ignition

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