F24F 3/14
By humidification
Official title: by humidification; by dehumidification
F24F3/14 (By humidification) appears on 2,452 US grants and 2,439 published applications in this corpus.
Search patents in F24F- Granted patents
- 2,452
- Published applications
- 2,439
- Assignees
- 1,045
- Inventors
- 4,395
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 19 | 0 |
| 1978 | 18 | 0 |
| 1979 | 15 | 0 |
| 1980 | 21 | 0 |
| 1981 | 20 | 0 |
| 1982 | 18 | 0 |
| 1983 | 12 | 0 |
| 1984 | 22 | 0 |
| 1985 | 18 | 0 |
| 1986 | 17 | 0 |
| 1987 | 23 | 0 |
| 1988 | 22 | 0 |
| 1989 | 26 | 0 |
| 1990 | 32 | 0 |
| 1991 | 35 | 0 |
| 1992 | 20 | 0 |
| 1993 | 31 | 0 |
| 1994 | 36 | 0 |
| 1995 | 31 | 0 |
| 1996 | 36 | 0 |
| 1997 | 40 | 0 |
| 1998 | 46 | 0 |
| 1999 | 44 | 0 |
| 2000 | 40 | 0 |
| 2001 | 49 | 14 |
| 2002 | 43 | 27 |
| 2003 | 36 | 41 |
| 2004 | 40 | 60 |
| 2005 | 41 | 62 |
| 2006 | 33 | 88 |
| 2007 | 51 | 57 |
| 2008 | 30 | 62 |
| 2009 | 28 | 76 |
| 2010 | 34 | 91 |
| 2011 | 51 | 73 |
| 2012 | 31 | 75 |
| 2013 | 47 | 96 |
| 2014 | 58 | 83 |
| 2015 | 68 | 104 |
| 2016 | 80 | 110 |
| 2017 | 86 | 150 |
| 2018 | 97 | 157 |
| 2019 | 134 | 165 |
| 2020 | 127 | 139 |
| 2021 | 138 | 159 |
| 2022 | 119 | 142 |
| 2023 | 111 | 108 |
| 2024 | 102 | 131 |
| 2025 | 107 | 108 |
| 2026 | 56 | 61 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F24F 3/1411By absorbing or adsorbing water1,096
- F24F 2003/144By dehumidification onlyIndexing code656
- F24F 3/153With subsequent heating, i.e. with the air, given the required humidity in412
- F24F 3/1405In which the humidity of the air is exclusively affected by contact363
- F24F 2003/1458Using regeneratorsIndexing code282
- F24F 2003/1435Comprising semi-permeable membraneIndexing code249
- F24F 3/147With both heat and humidity transfer between supplied and exhausted air225
Recent patents
- Cooling recovery system and method6 Oct 2026US 12,753,937 B2Heds Holdings LLC
- Dehumidification unit and desiccant drum therein29 Sep 2026US 12,747,872 B2Trane International Inc.
- System and method for indirect evaporative cooling29 Sep 2026US 12,747,877 B2A.T.E. Enterprises Ltd.
- HVAC dehumidification system22 Sep 2026US 12,741,512 B2Mahle International GmbH
- Secondary outside air path for a heat pump8 Sep 2026US 12,729,866 B2Flo Energy Solutions Inc.
- Ventilation system17 Sep 2026US 2026/0276238 A1LG Electronics Inc.
- Dehumidifier10 Sep 2026US 2026/0266483 A1LG Electronics Inc.
- Modular solid desiccant system for dedicated outdoor air system units10 Sep 2026US 2026/0266484 A1Carrier Corporation
- Vacuum-enhanced membrane dehumidification and humidification10 Sep 2026US 2026/0266485 A1Dais Corporation
- Water tank for dehumidifier and dehumidifier10 Sep 2026US 2026/0266507 A1LG Electronics Inc.
Most cited
By later US patents
- Humidifier module for use in a gas humidification assembly398US 4,921,642 APuritan-Bennett Corporation · 1990
- Method and means of air conditioning214US 5,058,388 ALuminus Pty., Ltd. · 1991
- Dri-Pc humidity and temperature controller164US 4,841,733 A1989
- Air conditioner and controller for active dehumidification while using ambient air to prevent overcooling159US 6,427,454 B12002
- Desiccant assisted air conditioner154US 4,887,438 A1989