B29L 2031/087
Propellers
Official title: {Propellers}
B29L2031/087 (Propellers) appears on 96 US grants and 76 published applications in this corpus.
Search patents in B29L- Granted patents
- 96
- Published applications
- 76
- Assignees
- 82
- Inventors
- 246
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 6 | 0 |
| 2001 | 4 | 1 |
| 2002 | 1 | 2 |
| 2003 | 3 | 4 |
| 2004 | 3 | 5 |
| 2005 | 3 | 1 |
| 2006 | 2 | 2 |
| 2007 | 2 | 2 |
| 2008 | 1 | 4 |
| 2009 | 2 | 0 |
| 2010 | 0 | 2 |
| 2011 | 1 | 2 |
| 2012 | 0 | 1 |
| 2013 | 1 | 4 |
| 2014 | 2 | 1 |
| 2015 | 3 | 4 |
| 2016 | 2 | 3 |
| 2017 | 2 | 1 |
| 2018 | 3 | 5 |
| 2019 | 2 | 5 |
| 2020 | 4 | 5 |
| 2021 | 4 | 0 |
| 2022 | 3 | 5 |
| 2023 | 2 | 1 |
| 2024 | 1 | 5 |
| 2025 | 8 | 6 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fan blade or vane with cross-shaped or star-shaped composite root24 Feb 2026US 12,558,857 B2Safran
- Blade or vane with a root made by crossing weft yarns24 Feb 2026US 12,559,224 B2Safran
- Propeller blade or airfoil with hollow composite root2 Dec 2025US 12,485,627 B2Safran
- Propeller blade or vane having a hollow composite root25 Nov 2025US 12,480,411 B2Safran Aircraft Engines
- Injection bonding of composite vane into pocket18 Nov 2025US 12,472,699 B2GKN Aerospace Sweden AB
- Fabric and resin composite material part8 Oct 2026US 2026/0307339 A1Safran Aircraft Engines
- Method of molding fiber reinforced resin impeller4 Jun 2026US 2026/0151942 A1Mitsubishi Electric Corporation
- Variable-pitch vane made of composite material for an unducted fan of an aircraft30 Apr 2026US 2026/0116529 A1Safran Aircraft Engines
- Injection bonding of composite vane into pocket12 Feb 2026US 2026/0042264 A1GKN Aerospace Sweden AB
- Blade or vane with a root made by crossing weft yarns8 Jan 2026US 2026/0008535 A1Safran
Most cited
By later US patents
- Method of manufacturing an annular bladed member having an integral shroud48US 4,786,347 AROLLS-ROYCE plc · 1988
- Manufacture of fiber reinforced articles41US 4,470,862 AUnited Technologies Corporation · 1984
- Composite fiber reinforced propeller39US 4,460,531 AThe Boeing Company · 1984
- Impeller35US 6,881,033 B2Fisher & Paykel Healthcare Limited · 2005
- Thermoplastic pump rotor32US 5,538,395 AOzen Corporation · 1996