B29C 53/824
Collapsible
Official title: {collapsible, e.g. elastic or inflatable; with removable parts, e.g. for regular shaped, straight tubular articles (B29C53/825 takes precedence)}
B29C53/824 (Collapsible) appears on 136 US grants and 80 published applications in this corpus.
Search patents in B29C- Granted patents
- 136
- Published applications
- 80
- Assignees
- 77
- Inventors
- 255
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 3 | 0 |
| 2000 | 8 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 1 | 3 |
| 2008 | 1 | 2 |
| 2009 | 0 | 1 |
| 2010 | 2 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 7 |
| 2013 | 3 | 7 |
| 2014 | 4 | 5 |
| 2015 | 6 | 3 |
| 2016 | 4 | 8 |
| 2017 | 2 | 2 |
| 2018 | 6 | 7 |
| 2019 | 5 | 6 |
| 2020 | 4 | 5 |
| 2021 | 4 | 1 |
| 2022 | 7 | 2 |
| 2023 | 1 | 3 |
| 2024 | 4 | 6 |
| 2025 | 4 | 4 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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
- Auxetic materials and structures for ceramic matrix composite airfoil mandrels7 Oct 2025US 12,435,008 B2Rtx Corporation
- Method for producing a composite cylindrical tank and composite tank produced by this method5 Aug 2025US 12,377,620 B2Covess N.V.
- Methods of forming a mandrel for forming composite structures, methods of forming composite structures, and related tools29 Apr 2025US 12,285,903 B2Northrop Grumman Systems Corporation
- Tool design methods and apparatus30 Jul 2026US 2026/0216927 A1
- Equipment and process for making a structural element in composite material7 Aug 2025US 2025/0249644 A1Leonardo S.P.A.
- Method for manufacturing a composite article26 Jun 2025US 2025/0205977 A1PaperShell AB
- Auxetic materials and structures for ceramic matrix composite airfoil mandrels27 Mar 2025US 2025/0100941 A1Rtx Corporation
- Multi-mandrel braiding process27 Feb 2025US 2025/0066259 A1Rtx Corporation
Most cited
By later US patents
- Coated abrasives and methods of preparation171US 5,924,917 AMinnesota Mining and Manufacturing Company · 1999
- Rigid segmented mandrel with inflatable support81US 5,266,137 A1993
- Method for constructing an inflatable mandrel73US 5,259,901 AThiokol Corporation · 1993
- Method for forming a composite structure70US 5,059,377 AAeroTrans · 1991
- Method for producing hollow composite articles by winding/laying down on an expansible mandrel51US 5,571,357 ASociete Anonyme dite: Aerospatiale Societe Nationale Industrielle · 1996