F24F 13/0218
Flexible soft ducts
Official title: {Flexible soft ducts, e.g. ducts made of permeable textiles}
F24F13/0218 (Flexible soft ducts) appears on 212 US grants and 229 published applications in this corpus.
Search patents in F24F- Granted patents
- 212
- Published applications
- 229
- Assignees
- 113
- Inventors
- 349
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 6 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 7 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 2 |
| 2002 | 6 | 5 |
| 2003 | 5 | 7 |
| 2004 | 5 | 8 |
| 2005 | 5 | 3 |
| 2006 | 3 | 8 |
| 2007 | 1 | 2 |
| 2008 | 2 | 10 |
| 2009 | 1 | 5 |
| 2010 | 1 | 12 |
| 2011 | 6 | 7 |
| 2012 | 2 | 3 |
| 2013 | 4 | 9 |
| 2014 | 4 | 8 |
| 2015 | 7 | 8 |
| 2016 | 7 | 10 |
| 2017 | 12 | 20 |
| 2018 | 8 | 8 |
| 2019 | 15 | 16 |
| 2020 | 15 | 12 |
| 2021 | 9 | 15 |
| 2022 | 11 | 11 |
| 2023 | 11 | 9 |
| 2024 | 7 | 17 |
| 2025 | 14 | 7 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Moisture and/or thermal resistance monitoring system for insulation-containing conduit and methods of use2 Jun 2026US 12,644,617 B2Royal Metal Products
- Universal air interface19 May 2026US 12,631,364 B2Zeppelin LLC
- System and method for shaping a duct section13 Jan 2026US 12,521,934 B2Plastiques G Plus Inc.
- Adaptive duct13 Jan 2026US 12,523,390 B2GM Global Technology Operations LLC
- Nozzle for air duct30 Dec 2025US 12,510,267 B2
- Class 1 flexible uninsulated duct with polymer core and integrated flame resistant barrier layer, method of use, and method of making1 Oct 2026US 2026/0298394 A1Flexible Technologies, Inc.
- Rail end mount and methods of use30 Jul 2026US 2026/0218817 A1Zipwall, LLC
- Class 1 uninsulated flexible duct constructed of polymer material, helical wire, fire resistant barrier material, and flame resistant yarn and method of use23 Jul 2026US 2026/0208464 A1Royal Metal Products
- CLASS 0 Uninsulated Flexible Duct and Method Of Use9 Jul 2026US 2026/0194255 A1Royal Metal Products
- Mobile impeller fan blade evaporator assembly21 May 2026US 2026/0139853 A1Cleva Technologies, LLC
Most cited
By later US patents
- Sheet-metal insulated register box with adjustable elbow fitting87US 5,957,506 AM & M Manufacturing, Inc. · 1999
- Air duct and method of making same83US 5,918,644 A1999
- Frame to support a deflated fabric air duct79US 6,280,320 B1Rite-Hite Holding Corporation · 2001
- Flexible duct54US 5,526,849 A1996
- Whole house fan system and methods of installation52US 7,497,774 B2Qc Manufacturing, Inc. · 2009