F24F 12/001
Use of energy recovery systems in air conditioning, ventilation or screening: with
Official title: {with heat-exchange between supplied and exhausted air}
F24F12/001 (Use of energy recovery systems in air conditioning, ventilation or screening: with) appears on 820 US grants and 1,005 published applications in this corpus.
Search patents in F24F- Granted patents
- 820
- Published applications
- 1,005
- Assignees
- 459
- Inventors
- 1,732
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 10 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 7 | 0 |
| 1981 | 9 | 0 |
| 1982 | 9 | 0 |
| 1983 | 11 | 0 |
| 1984 | 9 | 0 |
| 1985 | 9 | 0 |
| 1986 | 13 | 0 |
| 1987 | 13 | 0 |
| 1988 | 6 | 0 |
| 1989 | 10 | 0 |
| 1990 | 14 | 0 |
| 1991 | 10 | 0 |
| 1992 | 6 | 0 |
| 1993 | 7 | 0 |
| 1994 | 9 | 0 |
| 1995 | 11 | 0 |
| 1996 | 9 | 0 |
| 1997 | 4 | 0 |
| 1998 | 8 | 0 |
| 1999 | 8 | 0 |
| 2000 | 8 | 0 |
| 2001 | 12 | 6 |
| 2002 | 6 | 9 |
| 2003 | 8 | 20 |
| 2004 | 9 | 25 |
| 2005 | 15 | 26 |
| 2006 | 21 | 39 |
| 2007 | 15 | 24 |
| 2008 | 14 | 16 |
| 2009 | 11 | 18 |
| 2010 | 9 | 38 |
| 2011 | 9 | 39 |
| 2012 | 6 | 45 |
| 2013 | 16 | 41 |
| 2014 | 17 | 42 |
| 2015 | 24 | 37 |
| 2016 | 27 | 43 |
| 2017 | 34 | 44 |
| 2018 | 26 | 46 |
| 2019 | 40 | 50 |
| 2020 | 35 | 45 |
| 2021 | 35 | 50 |
| 2022 | 40 | 65 |
| 2023 | 46 | 78 |
| 2024 | 46 | 62 |
| 2025 | 53 | 68 |
| 2026 | 29 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Heat exchanger, ventilator, and method for manufacturing heat exchanger6 Oct 2026US 12,753,944 B2Daikin Industries, Ltd.
- Circulating air module and circulating air module system29 Sep 2026US 12,747,870 B2Envola GmbH
- 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
- 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.
- Temperature sensor autoconfiguration in hvac systems17 Sep 2026US 2026/0276232 A1Midea Group Co., Ltd.
- Ventilation system10 Sep 2026US 2026/0266500 A1LG Electronics Inc.
- Total heat exchanger and ventilation device10 Sep 2026US 2026/0266502 A1Sharp Kabushiki Kaisha
Most cited
By later US patents
- Dri-Pc humidity and temperature controller164US 4,841,733 A1989
- Ventilating dehumidifying system123US 6,575,228 B1Mississippi State Research and Technology Corporation · 2003
- Desiccant assisted dehumidification and cooling system114US 5,579,647 AEngelhard/ICC · 1996
- Apparatus suited for ventilating rooms contaminated with infectious disease organisms114US 5,761,908 AAir Quality Engineering · 1998
- Damper control in space heating and cooling114US 7,258,280 B2Tuckernuck Technologies LLC · 2007