F23Q

Ignition

Official title: IGNITION (devices or installations peculiar to internal-combustion engines F02P; of cigarettes or tobacco A24F; compositions therefor, chemical igniters C06C); EXTINGUISHING-DEVICES

F23Q (Ignition) appears on 2,698 US grants and 1,773 published applications in this corpus.

Search patents in F23Q

Granted patents: 2,698
Published applications: 1,773
Assignees: 949
Inventors: 3,806
Latest grant: 6 Oct 2026

Filings by year

F23Q: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	60	0
1977	55	0
1978	58	0
1979	37	0
1980	47	0
1981	49	0
1982	45	0
1983	49	0
1984	60	0
1985	49	0
1986	52	0
1987	41	0
1988	38	0
1989	61	0
1990	49	0
1991	41	0
1992	57	0
1993	56	0
1994	46	0
1995	49	0
1996	54	0
1997	43	0
1998	69	0
1999	72	0
2000	100	0
2001	76	19
2002	57	80
2003	87	71
2004	70	84
2005	54	84
2006	38	70
2007	42	82
2008	24	60
2009	32	76
2010	43	77
2011	24	63
2012	37	59
2013	38	78
2014	42	85
2015	54	99
2016	75	79
2017	78	77
2018	67	72
2019	77	78
2020	73	78
2021	47	57
2022	56	58
2023	49	61
2024	49	52
2025	36	41
2026	36	33

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

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