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F04D 29/327

With non identical blades

Official title: {with non identical blades}

F04D29/327 (With non identical blades) appears on 55 US grants and 55 published applications in this corpus.

Search patents in F04D

Granted patents: 55
Published applications: 55
Assignees: 42
Inventors: 131
Latest grant: 18 Aug 2026

Filings by year

F04D 29/327: granted patents and published applications per publication year
Year	Granted patents	Published applications
1988	1	0
1989	1	0
1990	2	0
1991	0	0
1992	0	0
1993	0	0
1994	0	0
1995	1	0
1996	0	0
1997	0	0
1998	0	0
1999	0	0
2000	0	0
2001	1	0
2002	0	0
2003	2	1
2004	0	1
2005	0	2
2006	2	0
2007	0	1
2008	1	3
2009	0	0
2010	0	0
2011	0	2
2012	0	0
2013	1	1
2014	1	5
2015	2	0
2016	1	2
2017	1	5
2018	0	10
2019	9	7
2020	13	3
2021	3	3
2022	5	1
2023	3	3
2024	2	1
2025	2	2
2026	1	2

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

Recent patents

Impeller18 Aug 2026US 12,710,052 B2Delta Electronics, Inc.
Fan with multilayer fan blades14 Oct 2025US 12,442,388 B2Huizhou Xunshuo Technology Co., Ltd
Impeller11 Feb 2025US 12,221,975 B2Delta Electronics, Inc.
Rotor and axial ventilator comprising an accessory axial fan1 Oct 2024US 12,104,605 B2R.E.M. Patents S.R.L.
Blower system with an inner axial fan blade set and an outer centrifugal fan blade set28 May 2024US 11,994,144 B2Dell Products L. P.

Most cited

By later US patents