F04D 29/32
For axial flow pumps
Official title: for axial flow pumps
F04D29/32 (For axial flow pumps) appears on 4,483 US grants and 4,912 published applications in this corpus.
Search patents in F04D- Granted patents
- 4,483
- Published applications
- 4,912
- Assignees
- 1,064
- Inventors
- 7,306
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 27 | 0 |
| 1978 | 15 | 0 |
| 1979 | 17 | 0 |
| 1980 | 22 | 0 |
| 1981 | 10 | 0 |
| 1982 | 12 | 0 |
| 1983 | 8 | 0 |
| 1984 | 8 | 0 |
| 1985 | 10 | 0 |
| 1986 | 18 | 0 |
| 1987 | 19 | 0 |
| 1988 | 20 | 0 |
| 1989 | 20 | 0 |
| 1990 | 22 | 0 |
| 1991 | 19 | 0 |
| 1992 | 24 | 0 |
| 1993 | 36 | 0 |
| 1994 | 32 | 0 |
| 1995 | 29 | 0 |
| 1996 | 26 | 0 |
| 1997 | 30 | 0 |
| 1998 | 21 | 0 |
| 1999 | 33 | 0 |
| 2000 | 67 | 0 |
| 2001 | 55 | 13 |
| 2002 | 71 | 45 |
| 2003 | 58 | 70 |
| 2004 | 57 | 106 |
| 2005 | 55 | 103 |
| 2006 | 77 | 91 |
| 2007 | 50 | 100 |
| 2008 | 49 | 144 |
| 2009 | 74 | 110 |
| 2010 | 58 | 122 |
| 2011 | 70 | 136 |
| 2012 | 112 | 156 |
| 2013 | 90 | 172 |
| 2014 | 126 | 174 |
| 2015 | 111 | 220 |
| 2016 | 138 | 468 |
| 2017 | 190 | 497 |
| 2018 | 295 | 425 |
| 2019 | 480 | 297 |
| 2020 | 423 | 325 |
| 2021 | 276 | 214 |
| 2022 | 310 | 192 |
| 2023 | 204 | 198 |
| 2024 | 220 | 192 |
| 2025 | 173 | 164 |
| 2026 | 100 | 178 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Aircraft with an unducted fan propulsor6 Oct 2026US 12,752,923 B2General Electric Company
- Fan6 Oct 2026US 12,753,768 B2Levitronix LLC
- Extraction impeller for axial compressor6 Oct 2026US 12,753,769 B2GE Vernova Infrastructure Technology LLC
- Axial fan assembly including an intermediate shroud6 Oct 2026US 12,753,773 B2Regal Beloit America, Inc.
- Flexible support structure for a geared architecture gas turbine engine29 Sep 2026US 12,747,675 B2Rtx Corporation
- Evaporator for ambient water bodies, and related system and method8 Oct 2026US 2026/0306964 A1Resource West, Inc.
- Performance of airfoils and hydrofoils8 Oct 2026US 2026/0307777 A1SJK Energy Solutions, LLC
- Turbofan engine including a fan actuation system8 Oct 2026US 2026/0309162 A1General Electric Company
- Spring plunger ceiling fan blade installation system1 Oct 2026US 2026/0298259 A1Hkc-US, LLC
- Variable-pitch vane for an unducted aeronautical thruster1 Oct 2026US 2026/0298260 A1Safran Aircraft Engines
Most cited
By later US patents
- Expandable impeller pump391US 7,393,181 B2Datascope Investment Corp. · 2008
- Wide chord fan blade334US 5,141,400 AGeneral Electric Company · 1992
- Expandable impeller pump296US 7,927,068 B2The Penn State Research Foundation · 2011
- Enhanced performance fan with the use of winglets282US 6,517,315 B2Hewlett-Packard Company · 2003
- Fan with collapsible blades, redundant fan system, and related method271US 6,860,713 B2Nidec Corporation · 2005