E04F 17/04
Air-ducts or air channels
Official title: Air-ducts or air channels {(heating in general F24; ventilating rooms in general F24F)}
E04F17/04 (Air-ducts or air channels) appears on 92 US grants and 93 published applications in this corpus.
Search patents in E04F- Granted patents
- 92
- Published applications
- 93
- Assignees
- 50
- Inventors
- 157
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 2 |
| 2002 | 3 | 5 |
| 2003 | 3 | 1 |
| 2004 | 2 | 4 |
| 2005 | 3 | 6 |
| 2006 | 0 | 3 |
| 2007 | 0 | 1 |
| 2008 | 4 | 2 |
| 2009 | 2 | 5 |
| 2010 | 1 | 2 |
| 2011 | 2 | 2 |
| 2012 | 5 | 6 |
| 2013 | 2 | 3 |
| 2014 | 5 | 6 |
| 2015 | 9 | 9 |
| 2016 | 3 | 6 |
| 2017 | 3 | 4 |
| 2018 | 7 | 3 |
| 2019 | 1 | 5 |
| 2020 | 4 | 2 |
| 2021 | 1 | 7 |
| 2022 | 4 | 2 |
| 2023 | 3 | 0 |
| 2024 | 3 | 3 |
| 2025 | 4 | 1 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Block with a contoured surface25 Aug 2026US D1,144,982 S1Design
- Ventilated structural panels and method of construction with ventilated structural panels30 Dec 2025US 12,509,881 B2
- Fire-rated modular duct assembly suitable for exhausting flammable or hazardous gases, vapours and other materials16 Sep 2025US RE50,587 E1Vaughanair Canada Ulc
- Exterior wall port for portable air conditioning units26 Aug 2025US 12,398,912 B1
- Building panel system29 Apr 2025US 12,286,796 B2
- Ventilated structural panels and method of construction with ventilated structural panels6 Aug 2026US 2026/0226740 A1
- Modular laminar space formation apparatus21 May 2026US 2026/0139495 A1CK Partners, LLC
- Layered structure of a flat, dimensionally stable building panel and a self-supporting air duct made of the layered structure12 Mar 2026US 2026/0070300 A1Saint-Gobain Isover
- Roof vent with contoured foot1 May 2025US 2025/0137267 A1
- Wind duct with silencer28 Nov 2024US 2024/0393001 A1FUJIFILM Corporation
Most cited
By later US patents
- Interior shaft wall construction153US 5,950,385 A1999
- Metal roof system35US 6,401,412 B12002
- Raceway construction for an air handing unit35US 7,334,377 B2Johnson Controls Technology Company · 2008
- Acoustic absorbers for use with computer cabinet fans and other cooling systems34US 7,314,113 B2Cray Inc. · 2008
- Vent pipe insulating sleeve29US 4,442,643 A1984