F24F 1/028
Characterised by air supply means
Official title: characterised by air supply means, e.g. fan casings, internal dampers or ducts (with secondary air induced by injector action of the primary air F24F1/01)
F24F1/028 (Characterised by air supply means) appears on 146 US grants and 183 published applications in this corpus.
Search patents in F24F- Granted patents
- 146
- Published applications
- 183
- Assignees
- 82
- Inventors
- 476
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 2 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 2 |
| 2016 | 0 | 1 |
| 2017 | 0 | 9 |
| 2018 | 2 | 2 |
| 2019 | 3 | 13 |
| 2020 | 7 | 17 |
| 2021 | 9 | 22 |
| 2022 | 12 | 30 |
| 2023 | 27 | 21 |
| 2024 | 19 | 18 |
| 2025 | 20 | 27 |
| 2026 | 15 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Window air conditioner22 Sep 2026US 12,742,557 B2Gd Midea Air-Conditioning Equipment Co., Ltd.
- Portable air conditioner15 Sep 2026US 12,736,233 B2Hephzibah Co., Ltd.
- Heat exchanging element and heat exchange ventilator1 Sep 2026US 12,723,765 B2Mitsubishi Electric Corporation
- Air conditioning device and method with vapor pressure deficit control1 Sep 2026US 12,723,772 B2AC Infinity Inc.
- Ventilation apparatus28 Jul 2026US 12,693,030 B2LG Electronics Inc.
- Ventilation system8 Oct 2026US 2026/0309342 A1Industrial Ventilation, Inc.
- Dehumidifier10 Sep 2026US 2026/0266481 A1LG Electronics Inc.
- Heat source unit of an air heat pump20 Aug 2026US 2026/0243461 A1Daikin Europe N.V.
- Utilization unit and refrigeration apparatus23 Jul 2026US 2026/0210563 A1Daikin Industries, Ltd.
- Outflow assembly and localised air-conditioning device16 Jul 2026US 2026/0202086 A1Close Comfort Pty Ltd
Most cited
By later US patents
- Humidity control apparatus48US 4,135,370 AHitachi, Ltd. · 1979
- Reverse air cycle air conditioner36US 3,995,446 A1976
- Air treatment apparatus utilizing intercangeable cartidges34US 5,133,042 A1992
- Roof top air conditioning unit33US 4,139,052 AWestinghouse Electric Corp. · 1979
- Air conditioner and air conditioning method31US 4,958,500 AHitachi, Ltd. · 1990