F04D 29/542
Bladed diffusers
Official title: {Bladed diffusers (fixing blades to stators F01D9/042)}
F04D29/542 (Bladed diffusers) appears on 1,327 US grants and 1,521 published applications in this corpus.
Search patents in F04D- Granted patents
- 1,327
- Published applications
- 1,521
- Assignees
- 347
- Inventors
- 2,668
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 3 | 0 |
| 2000 | 11 | 0 |
| 2001 | 5 | 0 |
| 2002 | 11 | 11 |
| 2003 | 23 | 18 |
| 2004 | 8 | 30 |
| 2005 | 15 | 31 |
| 2006 | 24 | 26 |
| 2007 | 14 | 47 |
| 2008 | 14 | 38 |
| 2009 | 16 | 34 |
| 2010 | 29 | 42 |
| 2011 | 31 | 39 |
| 2012 | 46 | 47 |
| 2013 | 34 | 50 |
| 2014 | 29 | 58 |
| 2015 | 34 | 59 |
| 2016 | 43 | 149 |
| 2017 | 68 | 166 |
| 2018 | 91 | 201 |
| 2019 | 190 | 71 |
| 2020 | 162 | 90 |
| 2021 | 70 | 46 |
| 2022 | 86 | 44 |
| 2023 | 61 | 75 |
| 2024 | 73 | 51 |
| 2025 | 55 | 47 |
| 2026 | 18 | 51 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fan shroud with flow directing deflectors22 Sep 2026US 12,742,460 B1Unada Co. Ltd.
- Packaged fan18 Aug 2026US 12,710,054 B2Evapco, Inc.
- Aircraft engine with stator having varying pitch21 Jul 2026US 12,687,114 B2Pratt & Whitney Canada Corp.
- Forward load reduction structures for aft-most stages of high pressure compressors14 Jul 2026US 12,680,557 B2General Electric Company
- Propulsor fan and drive system23 Jun 2026US 12,662,943 B2Whisper Aero Inc.
- Vacuum pump and stator disc24 Sep 2026US 2026/0286966 A1Edwards Japan Limited
- Guide Vane Segment17 Sep 2026US 2026/0275876 A1MTU Aero Engines AG
- Flow machine and method for producing a flow machine component guiding a flow medium27 Aug 2026US 2026/0251156 A1Ziehl-Abegg SE
- Heat source unit of an air heat pump20 Aug 2026US 2026/0243461 A1Daikin Europe N.V.
- Particulate separator assembly for a gas turbine engine13 Aug 2026US 2026/0235073 A1Rtx Corporation
Most cited
By later US patents
- Heart assist device with expandable impeller pump411US 7,841,976 B2The Penn State Research Foundation · 2010
- Leaned and swept fan outlet guide vanes140US 6,195,983 B1General Electric Company · 2001
- Fan and housing139US 4,548,548 AAirflow Research and Manufacturing Corporation · 1985
- Side-vented axial fan and associated fabrication methods124US 5,407,324 ACompaq Computer Corporation · 1995
- Bowed airfoil for the compression section of a rotary machine108US 5,088,892 AUnited Technologies Corporation · 1992