F24F 6/04
Using stationary unheated wet elements
Official title: using stationary unheated wet elements
F24F6/04 (Using stationary unheated wet elements) appears on 507 US grants and 442 published applications in this corpus.
Search patents in F24F- Granted patents
- 507
- Published applications
- 442
- Assignees
- 236
- Inventors
- 1,015
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 11 | 0 |
| 1978 | 6 | 0 |
| 1979 | 6 | 0 |
| 1980 | 10 | 0 |
| 1981 | 5 | 0 |
| 1982 | 11 | 0 |
| 1983 | 4 | 0 |
| 1984 | 7 | 0 |
| 1985 | 5 | 0 |
| 1986 | 10 | 0 |
| 1987 | 11 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 9 | 0 |
| 1991 | 6 | 0 |
| 1992 | 10 | 0 |
| 1993 | 8 | 0 |
| 1994 | 8 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 8 | 0 |
| 1998 | 11 | 0 |
| 1999 | 11 | 0 |
| 2000 | 8 | 0 |
| 2001 | 10 | 3 |
| 2002 | 10 | 12 |
| 2003 | 13 | 5 |
| 2004 | 5 | 8 |
| 2005 | 5 | 16 |
| 2006 | 7 | 7 |
| 2007 | 4 | 7 |
| 2008 | 3 | 10 |
| 2009 | 3 | 16 |
| 2010 | 2 | 11 |
| 2011 | 12 | 17 |
| 2012 | 7 | 9 |
| 2013 | 5 | 18 |
| 2014 | 9 | 7 |
| 2015 | 7 | 20 |
| 2016 | 15 | 12 |
| 2017 | 16 | 51 |
| 2018 | 24 | 16 |
| 2019 | 25 | 29 |
| 2020 | 20 | 31 |
| 2021 | 18 | 26 |
| 2022 | 21 | 30 |
| 2023 | 19 | 23 |
| 2024 | 22 | 28 |
| 2025 | 18 | 11 |
| 2026 | 17 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and method for indirect evaporative cooling29 Sep 2026US 12,747,877 B2A.T.E. Enterprises Ltd.
- Method of enhancing performance of a porous evaporative media14 Jul 2026US 12,680,054 B2Ecolab USA Inc.
- Disinfection humidifier and methods using the same16 Jun 2026US 12,656,000 B2Soclean, Inc.
- Humidification assembly and humidifier2 Jun 2026US 12,644,614 B2Gd Midea Environment Appliances Mfg Co., Ltd.
- Humidifier wet-pack assembly12 May 2026US 12,624,847 B2Research Products Corporation
- Method of enhancing performance of a porous evaporative media8 Oct 2026US 2026/0308483 A1Ecolab USA Inc.
- Humidifier and water storage component thereof17 Sep 2026US 2026/0276222 A1Shenzhen Chenbei Technology Co., Ltd.
- Humidifier wet-pack assembly17 Sep 2026US 2026/0276223 A1Research Products Corporation
- Evaporator and humidification device27 Aug 2026US 2026/0251323 A1Shenzhen Chenbei Technology Co., Ltd.
- Eductor with integrated orifice check valve and scale control tray27 Aug 2026US 2026/0251324 A1Research Products Corporation
Most cited
By later US patents
- Constant humidity evaporative wicking filter humidifier169US 5,061,405 AEmerson Electric Co. · 1991
- Evaporative humidifier147US 5,783,117 AHunter Fan Company · 1998
- Off-road evaporative air cooler124US 5,168,722 AWalton Enterprises II L.P. · 1992
- Humidifier tank with improved handle120US 5,483,616 ADuracraft Corporation · 1996
- Method of evaporative cooling of a fluid and apparatus therefor98US 6,854,278 B22005