F04D 29/522
Especially adapted for elastic fluid pumps
Official title: {especially adapted for elastic fluid pumps}
F04D29/522 (Especially adapted for elastic fluid pumps) appears on 1,564 US grants and 1,902 published applications in this corpus.
Search patents in F04D- Granted patents
- 1,564
- Published applications
- 1,902
- Assignees
- 545
- Inventors
- 3,335
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 8 | 0 |
| 1993 | 4 | 0 |
| 1994 | 8 | 0 |
| 1995 | 6 | 0 |
| 1996 | 7 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 18 | 2 |
| 2002 | 17 | 14 |
| 2003 | 10 | 19 |
| 2004 | 11 | 12 |
| 2005 | 14 | 21 |
| 2006 | 15 | 17 |
| 2007 | 10 | 29 |
| 2008 | 7 | 43 |
| 2009 | 14 | 38 |
| 2010 | 18 | 42 |
| 2011 | 18 | 47 |
| 2012 | 51 | 46 |
| 2013 | 35 | 72 |
| 2014 | 32 | 66 |
| 2015 | 43 | 98 |
| 2016 | 34 | 187 |
| 2017 | 80 | 193 |
| 2018 | 113 | 189 |
| 2019 | 211 | 118 |
| 2020 | 170 | 109 |
| 2021 | 96 | 100 |
| 2022 | 121 | 90 |
| 2023 | 97 | 88 |
| 2024 | 94 | 84 |
| 2025 | 112 | 87 |
| 2026 | 45 | 91 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Torso aerator22 Sep 2026US 12,742,458 B2
- Compressor shroud with swept grooves22 Sep 2026US 12,742,459 B2Pratt & Whitney Canada Corp.
- Blower15 Sep 2026US 12,736,063 B2Nidec Corporation
- Ventilation system for aircraft wheel and wheel assembly including such a system15 Sep 2026US 12,736,100 B2Safran Ventilation Systems
- Portable fan device1 Sep 2026US 12,723,591 B2
- Fan assembly for an electric motor and electric motor comprising such a fan assembly1 Oct 2026US 2026/0302888 A1ALSTOM Holdings
- Fan assembly24 Sep 2026US 2026/0286976 A1Milwaukee Electric Tool Corporation
- Diversified and removable pump systems and methods for inflating and deflating inflatable objects24 Sep 2026US 2026/0286977 A1Intex Marketing Ltd.
- Diversified and removable pump systems and methods for inflating and deflating inflatable objects24 Sep 2026US 2026/0286978 A1Intex Marketing Ltd.
- Diversified and removable pump systems and methods for inflating and deflating inflatable objects24 Sep 2026US 2026/0286979 A1Intex Marketing Ltd.
Most cited
By later US patents
- Expandable impeller pump391US 7,393,181 B2Datascope Investment Corp. · 2008
- Expandable impeller pump296US 7,927,068 B2The Penn State Research Foundation · 2011
- Expandable impeller pump197US 8,376,707 B2The Penn State Research Foundation · 2013
- Gas turbine engine variable bleed pivotal flow splitter132US 5,279,109 AGeneral Electric Company · 1994
- Side-vented axial fan and associated fabrication methods124US 5,407,324 ACompaq Computer Corporation · 1995