F04D 29/52
For axial pumps
Official title: for axial pumps
F04D29/52 (For axial pumps) appears on 4,119 US grants and 4,673 published applications in this corpus.
Search patents in F04D- Granted patents
- 4,119
- Published applications
- 4,673
- Assignees
- 1,048
- Inventors
- 7,349
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 12 | 0 |
| 1978 | 8 | 0 |
| 1979 | 11 | 0 |
| 1980 | 17 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 8 | 0 |
| 1985 | 14 | 0 |
| 1986 | 13 | 0 |
| 1987 | 13 | 0 |
| 1988 | 15 | 0 |
| 1989 | 19 | 0 |
| 1990 | 11 | 0 |
| 1991 | 15 | 0 |
| 1992 | 21 | 0 |
| 1993 | 21 | 0 |
| 1994 | 26 | 0 |
| 1995 | 17 | 0 |
| 1996 | 21 | 0 |
| 1997 | 22 | 0 |
| 1998 | 20 | 0 |
| 1999 | 8 | 0 |
| 2000 | 22 | 0 |
| 2001 | 31 | 4 |
| 2002 | 47 | 38 |
| 2003 | 50 | 50 |
| 2004 | 35 | 65 |
| 2005 | 37 | 82 |
| 2006 | 67 | 83 |
| 2007 | 46 | 112 |
| 2008 | 39 | 120 |
| 2009 | 51 | 102 |
| 2010 | 72 | 122 |
| 2011 | 68 | 125 |
| 2012 | 128 | 134 |
| 2013 | 94 | 172 |
| 2014 | 100 | 179 |
| 2015 | 109 | 231 |
| 2016 | 119 | 416 |
| 2017 | 184 | 404 |
| 2018 | 282 | 455 |
| 2019 | 479 | 288 |
| 2020 | 418 | 284 |
| 2021 | 242 | 212 |
| 2022 | 277 | 197 |
| 2023 | 220 | 227 |
| 2024 | 234 | 198 |
| 2025 | 220 | 188 |
| 2026 | 108 | 185 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Bearing for turbomachine variable pitch stator vane pivot, stator vane comprising such a bearing and turbomachine comprising such stator vanes6 Oct 2026US 12,753,705 B2Safran Aircraft Engines
- Fluid pump and method of manufacturing same6 Oct 2026US 12,753,765 B2Temco Industrial, LLC
- Vertical turbine pump and method for producing an elbow housing and/or a lantern housing of a vertical turbine pump6 Oct 2026US 12,753,766 B2Wilo SE
- Blowing device and blowing device operating method29 Sep 2026US 12,747,738 B2Samsung Electronics Co., Ltd.
- Variable vane system for aircraft powerplant29 Sep 2026US 12,747,739 B1Rtx Corporation
- Evaporator for ambient water bodies, and related system and method8 Oct 2026US 2026/0306964 A1Resource West, Inc.
- Variable-pitch vane for an unducted aeronautical thruster1 Oct 2026US 2026/0298260 A1Safran Aircraft Engines
- Flow deflector having channels with double ejection angles1 Oct 2026US 2026/0298265 A1Safran Aircraft Engines
- Fan assembly for an electric motor and electric motor comprising such a fan assembly1 Oct 2026US 2026/0302888 A1ALSTOM Holdings
- Vacuum pump and stator disc24 Sep 2026US 2026/0286966 A1Edwards Japan Limited
Most cited
By later US patents
- Heart assist device with expandable impeller pump411US 7,841,976 B2The Penn State Research Foundation · 2010
- Expandable impeller pump391US 7,393,181 B2Datascope Investment Corp. · 2008
- Systems and methods for routing pressurized fluid305US 8,905,056 B2Halliburton Energy Services.Inc. · 2014
- Expandable impeller pump296US 7,927,068 B2The Penn State Research Foundation · 2011
- Turbofan gas turbine engine242US 4,827,712 AROLLS-ROYCE plc · 1989