F24F 12/006
Using an air-to-air heat exchanger
Official title: {using an air-to-air heat exchanger (F24F12/002 takes precedence)}
F24F12/006 (Using an air-to-air heat exchanger) appears on 471 US grants and 740 published applications in this corpus.
Search patents in F24F- Granted patents
- 471
- Published applications
- 740
- Assignees
- 301
- Inventors
- 1,210
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 9 | 6 |
| 2002 | 5 | 8 |
| 2003 | 5 | 13 |
| 2004 | 6 | 22 |
| 2005 | 13 | 24 |
| 2006 | 18 | 35 |
| 2007 | 13 | 11 |
| 2008 | 10 | 15 |
| 2009 | 10 | 15 |
| 2010 | 9 | 29 |
| 2011 | 7 | 33 |
| 2012 | 5 | 32 |
| 2013 | 10 | 29 |
| 2014 | 11 | 32 |
| 2015 | 21 | 31 |
| 2016 | 19 | 29 |
| 2017 | 23 | 36 |
| 2018 | 19 | 30 |
| 2019 | 27 | 31 |
| 2020 | 18 | 28 |
| 2021 | 22 | 32 |
| 2022 | 24 | 46 |
| 2023 | 35 | 59 |
| 2024 | 26 | 47 |
| 2025 | 39 | 47 |
| 2026 | 22 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Heat exchanger, ventilator, and method for manufacturing heat exchanger6 Oct 2026US 12,753,944 B2Daikin Industries, Ltd.
- Method for producing an exchanger element package for a vehicle8 Sep 2026US 12,729,875 B2Plastic Concept GmbH
- Closure unit for a ventilation device25 Aug 2026US 12,716,612 B2Viessmann Climate Solutions SE
- Laminate11 Aug 2026US 12,703,777 B2Daicel Corporation
- Adaptive economizer section in air handling unit30 Jun 2026US 12,669,261 B2Mas Hvac Inc.
- Integral ventilation bypass dampener and free cooling for air-to-air counter flow heat exchanger1 Oct 2026US 2026/0298497 A1Building Performance Equipment, Inc.
- Ventilation apparatus24 Sep 2026US 2026/0287204 A1Samsung Electronics Co., Ltd.
- Ventilation device having oxygen-supplying function and ventilation method using same3 Sep 2026US 2026/0258962 A1LG Electronics Inc.
- Ventilation unit for a building27 Aug 2026US 2026/0251339 A1Clairitech Innovations Inc.
- Heat recovery ventilation unit with drainage27 Aug 2026US 2026/0251342 A1Zehnder Group International AG
Most cited
By later US patents
- Ventilating dehumidifying system123US 6,575,228 B1Mississippi State Research and Technology Corporation · 2003
- Apparatus suited for ventilating rooms contaminated with infectious disease organisms114US 5,761,908 AAir Quality Engineering · 1998
- Ventilation system100US 6,209,622 B1Venmar Ventilation Inc. · 2001
- Ventilator system and method76US 7,231,967 B2Building Performance Equipment, Inc. · 2007
- Environmental controller for a sealed structure72US 5,082,173 AMcMaster University · 1992