F03B 3/02

Machines or engines of reaction type: with radial flow at high-pressure side

Official title: with radial flow at high-pressure side and axial flow at low-pressure side of rotors, e.g. Francis turbines {(rotors per se F03B3/125)}

F03B3/02 (Machines or engines of reaction type: with radial flow at high-pressure side) appears on 103 US grants and 103 published applications in this corpus.

Search patents in F03B

Granted patents: 103
Published applications: 103
Assignees: 51
Inventors: 204
Latest grant: 18 Nov 2025

Filings by year

F03B 3/02: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	2	0
1977	2	0
1978	0	0
1979	3	0
1980	0	0
1981	0	0
1982	0	0
1983	0	0
1984	0	0
1985	0	0
1986	2	0
1987	0	0
1988	1	0
1989	0	0
1990	0	0
1991	0	0
1992	0	0
1993	1	0
1994	0	0
1995	0	0
1996	0	0
1997	1	0
1998	2	0
1999	2	0
2000	3	0
2001	1	1
2002	2	1
2003	0	1
2004	0	3
2005	2	6
2006	4	1
2007	3	2
2008	0	1
2009	0	1
2010	2	8
2011	0	4
2012	2	6
2013	1	2
2014	8	8
2015	5	5
2016	4	7
2017	5	7
2018	5	8
2019	9	5
2020	9	7
2021	7	7
2022	2	1
2023	8	4
2024	2	5
2025	3	1
2026	0	1

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

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