B29C 53/821
Mandrels especially adapted for winding and joining
Official title: {Mandrels especially adapted for winding and joining}
B29C53/821 (Mandrels especially adapted for winding and joining) appears on 439 US grants and 265 published applications in this corpus.
Search patents in B29C- Granted patents
- 439
- Published applications
- 265
- Assignees
- 269
- Inventors
- 791
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 8 | 0 |
| 1978 | 4 | 0 |
| 1979 | 7 | 0 |
| 1980 | 4 | 0 |
| 1981 | 10 | 0 |
| 1982 | 11 | 0 |
| 1983 | 7 | 0 |
| 1984 | 8 | 0 |
| 1985 | 8 | 0 |
| 1986 | 9 | 0 |
| 1987 | 10 | 0 |
| 1988 | 4 | 0 |
| 1989 | 9 | 0 |
| 1990 | 7 | 0 |
| 1991 | 5 | 0 |
| 1992 | 12 | 0 |
| 1993 | 14 | 0 |
| 1994 | 11 | 0 |
| 1995 | 15 | 0 |
| 1996 | 7 | 0 |
| 1997 | 10 | 0 |
| 1998 | 15 | 0 |
| 1999 | 10 | 0 |
| 2000 | 12 | 0 |
| 2001 | 10 | 1 |
| 2002 | 6 | 5 |
| 2003 | 7 | 3 |
| 2004 | 1 | 3 |
| 2005 | 2 | 7 |
| 2006 | 3 | 1 |
| 2007 | 3 | 6 |
| 2008 | 3 | 4 |
| 2009 | 3 | 10 |
| 2010 | 7 | 12 |
| 2011 | 3 | 7 |
| 2012 | 7 | 10 |
| 2013 | 8 | 17 |
| 2014 | 9 | 15 |
| 2015 | 11 | 15 |
| 2016 | 13 | 21 |
| 2017 | 9 | 7 |
| 2018 | 14 | 22 |
| 2019 | 14 | 18 |
| 2020 | 20 | 27 |
| 2021 | 16 | 6 |
| 2022 | 18 | 12 |
| 2023 | 6 | 8 |
| 2024 | 13 | 15 |
| 2025 | 7 | 9 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Equipment and process for making a structural element in composite material11 Aug 2026US 12,703,157 B2Leonardo S.P.A.
- Multi-mandrel braiding process3 Mar 2026US 12,565,451 B2Rtx Corporation
- Method for controlling winding deformation of fiber fabric and forming mold thereof27 Jan 2026US 12,533,858 B2Aecc Commercial Aircraft Engine Co., Ltd.
- Pull-through winding system and method23 Dec 2025US 12,502,847 B2IsoTruss, Inc.
- Auxetic materials and structures for ceramic matrix composite airfoil mandrels7 Oct 2025US 12,435,008 B2Rtx Corporation
- Melt-out mandrel for composite structures8 Oct 2026US 2026/0307324 A1Kingdom First Holdings, Inc.
- Mandrel for producing a hollow composite component of a wind turbine rotor blade27 Aug 2026US 2026/0249566 A1Lm Wind Power A/S
- Tool design methods and apparatus30 Jul 2026US 2026/0216927 A1
- Method for manufacturing fiber bundle-containing product, and filament winding apparatus22 Jan 2026US 2026/0021628 A1Murata Machinery, Ltd.
- Gas turbine engine with split helical piston seal13 Nov 2025US 2025/0345982 A1Raytheon Technologies Corporation
Most cited
By later US patents
- Wind turbine and a shaft for a wind turbine1,094US 8,664,792 B2Envision Energy (Denmark) ApS · 2014
- Anatomically shaped vasoocclusive device and method of making the same551US 5,645,558 AMedical University of South Carolina · 1997
- Anatomically shaped vasoocclusive devices330US 5,911,731 ATarget Therapeutics, Inc. · 1999
- Anatomically shaped vasoocclusive device and method for deploying same325US 5,766,219 AMUSC Foundation for Research Development · 1998
- Three dimensional, low friction vasoocclusive coil, and method of manufacture231US 6,638,291 B1Micrus Corporation · 2003