F24F 8/00
Treatment
Official title: Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
F24F8/00 (Treatment) appears on 3,066 US grants and 4,165 published applications in this corpus.
Search patents in F24F- Granted patents
- 3,066
- Published applications
- 4,165
- Assignees
- 1,670
- Inventors
- 7,388
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 6 | 0 |
| 1978 | 5 | 0 |
| 1979 | 5 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 6 | 0 |
| 1983 | 5 | 0 |
| 1984 | 8 | 0 |
| 1985 | 15 | 0 |
| 1986 | 5 | 0 |
| 1987 | 7 | 0 |
| 1988 | 24 | 0 |
| 1989 | 17 | 0 |
| 1990 | 24 | 0 |
| 1991 | 16 | 0 |
| 1992 | 21 | 0 |
| 1993 | 21 | 0 |
| 1994 | 34 | 0 |
| 1995 | 36 | 0 |
| 1996 | 38 | 0 |
| 1997 | 31 | 0 |
| 1998 | 44 | 0 |
| 1999 | 52 | 0 |
| 2000 | 41 | 0 |
| 2001 | 39 | 8 |
| 2002 | 46 | 61 |
| 2003 | 54 | 95 |
| 2004 | 55 | 141 |
| 2005 | 67 | 136 |
| 2006 | 55 | 155 |
| 2007 | 59 | 79 |
| 2008 | 66 | 93 |
| 2009 | 60 | 73 |
| 2010 | 50 | 93 |
| 2011 | 43 | 95 |
| 2012 | 55 | 104 |
| 2013 | 64 | 77 |
| 2014 | 71 | 90 |
| 2015 | 69 | 106 |
| 2016 | 85 | 111 |
| 2017 | 95 | 170 |
| 2018 | 84 | 150 |
| 2019 | 122 | 172 |
| 2020 | 139 | 211 |
| 2021 | 143 | 336 |
| 2022 | 175 | 465 |
| 2023 | 215 | 418 |
| 2024 | 259 | 333 |
| 2025 | 231 | 230 |
| 2026 | 184 | 163 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F24F 8/10Treatment: by separation2,011
- F24F 8/20Treatment: by sterilisation932
- F24F 8/30Treatment: by ionisation414
- F24F 8/80Self-contained air purifiers312
- F24F 8/50Treatment: by odorisation232
- F24F 8/95Treatment: specially adapted for specific purposes171
- F24F 8/90Cleaning of purification apparatus163
- F24F 8/40Treatment: by ozonisation77
All 10 subgroupsShow fewer
Recent patents
- Portable breathing air filtering device and method6 Oct 2026US 12,752,231 B2King Abdullah University of Science and Technology
- Indoor air pollution prevention system6 Oct 2026US 12,753,949 B2Microjet Technology Co., Ltd.
- Filter systems for room air conditioners29 Sep 2026US 12,746,494 B2Rheem Manufacturing Company
- Indoor unit for air conditioner29 Sep 2026US 12,746,496 B2LG Electronics Inc.
- Indoor unit for air conditioner29 Sep 2026US 12,746,497 B2LG Electronics Inc.
- Airframe system and method of controlling airflow8 Oct 2026US 2026/0306210 A1SLD Technology, Inc.
- Air Treatment System8 Oct 2026US 2026/0307008 A1Universiteit Antwerpen
- Systems, Methods, and Apparatuses for Producing and Packaging Medical Fluids8 Oct 2026US 2026/0307835 A1
- Air Filter8 Oct 2026US 2026/0309346 A1Zhongshan Scott Clean&Purification Co., Ltd.
- Air cleaner8 Oct 2026US 2026/0309347 A1LG Electronics Inc.
Most cited
By later US patents
- Home cleaning robot729US 6,459,955 B1The Procter & Gamble Company · 2002
- Medical/surgical waste collection unit including waste containers of different storage volumes with inter-container transfer valve and independently controlled vacuum levels332US 7,621,898 B2Stryker Corporation · 2009
- Medical/surgical waste collection and disposal system including a rover and a docker, the docker having features facilitating the alignment of the docker with the rover285US 8,740,866 B2Stryker Corporation · 2014
- Gas purifier262US 6,030,437 AU. S. Philips Corporation · 2000
- Medical/surgical waste collection portable rover capable of zero setting a float used to measure the volume of liquid in a waste container259US 10,343,102 B2Stryker Corporation · 2019