F24F 8/125
Using wet filter elements
Official title: using wet filter elements
F24F8/125 (Using wet filter elements) appears on 65 US grants and 79 published applications in this corpus.
Search patents in F24F- Granted patents
- 65
- Published applications
- 79
- Assignees
- 52
- Inventors
- 199
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 4 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 2 | 0 |
| 2008 | 0 | 11 |
| 2009 | 0 | 3 |
| 2010 | 4 | 1 |
| 2011 | 3 | 3 |
| 2012 | 0 | 1 |
| 2013 | 3 | 2 |
| 2014 | 3 | 2 |
| 2015 | 0 | 1 |
| 2016 | 3 | 3 |
| 2017 | 2 | 3 |
| 2018 | 1 | 2 |
| 2019 | 5 | 10 |
| 2020 | 5 | 7 |
| 2021 | 3 | 5 |
| 2022 | 4 | 2 |
| 2023 | 2 | 5 |
| 2024 | 0 | 3 |
| 2025 | 4 | 4 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Airborn pathogen disenfecting system with interchangeable filters for an HVAC system18 Aug 2026US 12,710,198 B2
- Multi-functional equipment for direct decarbonization with improved indoor air quality25 Nov 2025US 12,480,672 B2UT-Battelle, LLC
- HVAC system air filter8 Apr 2025US 12,268,988 B2K&N Engineering, Inc.
- Air cleaning apparatus with a moist filter11 Mar 2025US 12,246,280 B2Watervation Co., Ltd.
- Air filtration apparatus11 Feb 2025US 12,222,134 B2
- An apparatus for ventilating an environment24 Sep 2026US 2026/0287189 A1Earthonomic Ecosolutions Private Limited
- Air humidifier9 Jul 2026US 2026/0194243 A1Shenzhen Antop Technology Limited
- Humidifying and filtering floor register with child-safe design for hvac systems7 May 2026US 2026/0126207 A1Platsun Inc.
- Air purification device12 Feb 2026US 2026/0041807 A1Panasonic Intellectual Property Management Co., Ltd.
- HVAC System Air Filter24 Jul 2025US 2025/0235817 A1K&N Engineering, Inc.
Most cited
By later US patents
- Heating, ventilation and air conditioning unit with automatically controlled water spray air purification system48US 5,389,120 A1995
- Rotating element fume collection apparatus48US 5,888,261 A1999
- Air treatment system42US 5,578,113 AHolmes Product Corp. · 1996
- Air filtration system41US 6,063,170 AAir Medic, Inc. · 2000
- Room air environment conditioner40US 5,315,834 A1994