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F04B 53/123

Flexible valves

Official title: {Flexible valves}

F04B53/123 (Flexible valves) appears on 59 US grants and 29 published applications in this corpus.

Search patents in F04B

Granted patents: 59
Published applications: 29
Assignees: 33
Inventors: 90
Latest grant: 8 Sep 2026

Filings by year

F04B 53/123: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	1	0
1977	1	0
1978	2	0
1979	1	0
1980	1	0
1981	2	0
1982	0	0
1983	2	0
1984	2	0
1985	0	0
1986	0	0
1987	2	0
1988	1	0
1989	3	0
1990	0	0
1991	0	0
1992	1	0
1993	1	0
1994	2	0
1995	2	0
1996	5	0
1997	2	0
1998	0	0
1999	2	0
2000	1	0
2001	0	0
2002	2	0
2003	0	0
2004	0	1
2005	0	0
2006	0	0
2007	1	0
2008	0	0
2009	0	1
2010	0	0
2011	0	0
2012	0	0
2013	0	3
2014	0	1
2015	2	2
2016	1	1
2017	2	3
2018	1	3
2019	3	3
2020	2	0
2021	2	3
2022	3	6
2023	3	0
2024	1	1
2025	1	1
2026	1	0

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

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