F04D 29/324
Blades
Official title: {Blades}
F04D29/324 (Blades) appears on 1,220 US grants and 1,374 published applications in this corpus.
Search patents in F04D- Granted patents
- 1,220
- Published applications
- 1,374
- Assignees
- 179
- Inventors
- 2,111
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 6 | 0 |
| 1998 | 6 | 0 |
| 1999 | 6 | 0 |
| 2000 | 8 | 0 |
| 2001 | 10 | 4 |
| 2002 | 11 | 2 |
| 2003 | 7 | 4 |
| 2004 | 5 | 15 |
| 2005 | 5 | 26 |
| 2006 | 17 | 8 |
| 2007 | 9 | 21 |
| 2008 | 8 | 53 |
| 2009 | 38 | 23 |
| 2010 | 21 | 40 |
| 2011 | 17 | 46 |
| 2012 | 32 | 50 |
| 2013 | 35 | 56 |
| 2014 | 51 | 61 |
| 2015 | 25 | 63 |
| 2016 | 52 | 160 |
| 2017 | 61 | 152 |
| 2018 | 99 | 144 |
| 2019 | 168 | 75 |
| 2020 | 146 | 119 |
| 2021 | 82 | 52 |
| 2022 | 100 | 35 |
| 2023 | 48 | 45 |
| 2024 | 50 | 60 |
| 2025 | 35 | 30 |
| 2026 | 23 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Extraction impeller for axial compressor6 Oct 2026US 12,753,769 B2GE Vernova Infrastructure Technology LLC
- Gas turbine engine with acoustic spacing of the fan blades and outlet guide vanes29 Sep 2026US 12,747,735 B2General Electric Company
- Airfoils and airfoil assemblies with trailing edge features28 Jul 2026US 12,692,873 B1General Electric Company
- Gas turbine engine2 Jun 2026US 12,644,386 B2General Electric Company
- Blade with composite structure having improved ply drop orientation2 Jun 2026US 12,644,466 B2Safran Aircraft Engines
- Propeller blade and method for repairing a propeller blade20 Aug 2026US 2026/0242053 A1RöDer PräZision GmbH
- Airfoil assembly13 Aug 2026US 2026/0235037 A1GE Aviation Systems LLC
- Aeronautical propulsion system comprising an optimized fan section6 Aug 2026US 2026/0226872 A1Safran Aircraft Engines
- Blading system for axial compressors with axially opposing base merged double triangular prism device blades6 Aug 2026US 2026/0226914 A1Spacerolls Aerospace Technologies Private Limited
- Rotor and vacuum pump6 Aug 2026US 2026/0226915 A1Leybold Aktiengesellschaft
Most cited
By later US patents
- Wide chord fan blade334US 5,141,400 AGeneral Electric Company · 1992
- Forward swept rotor blade138US 5,167,489 AGeneral Electric Company · 1992
- Swept fan blade127US 6,071,077 AROLLS-ROYCE plc · 2000
- Nanocomposite layered airfoil114US 6,341,747 B12002
- Erosion resistant surface protection106US 5,486,096 AUnited Technologies Corporation · 1996