F24F 2110/50
Air quality properties
F24F2110/50 (Air quality properties) appears on 1,221 US grants and 1,887 published applications in this corpus.
Search patents in F24F- Granted patents
- 1,221
- Published applications
- 1,887
- Assignees
- 731
- Inventors
- 3,647
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 7 | 0 |
| 1994 | 7 | 0 |
| 1995 | 11 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 9 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 4 | 2 |
| 2002 | 13 | 14 |
| 2003 | 13 | 16 |
| 2004 | 12 | 27 |
| 2005 | 8 | 20 |
| 2006 | 15 | 33 |
| 2007 | 8 | 22 |
| 2008 | 13 | 15 |
| 2009 | 10 | 18 |
| 2010 | 13 | 21 |
| 2011 | 9 | 19 |
| 2012 | 11 | 19 |
| 2013 | 7 | 15 |
| 2014 | 15 | 32 |
| 2015 | 20 | 47 |
| 2016 | 21 | 66 |
| 2017 | 32 | 101 |
| 2018 | 51 | 98 |
| 2019 | 92 | 125 |
| 2020 | 89 | 141 |
| 2021 | 94 | 188 |
| 2022 | 110 | 197 |
| 2023 | 125 | 197 |
| 2024 | 137 | 192 |
| 2025 | 125 | 157 |
| 2026 | 96 | 105 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Indoor air pollution prevention system6 Oct 2026US 12,753,949 B2Microjet Technology Co., Ltd.
- System and method for detecting low indoor air quality and enabling ventilation in multi-zone29 Sep 2026US 12,747,881 B2Carrier Corporation
- Indoor environment control system and operation method thereof22 Sep 2026US 12,742,562 B2Industry-Academic Cooperation Foundation, Dankook University
- Comparative methods for air quality measurement and use thereof22 Sep 2026US 12,742,760 B2Uhoo Pte Ltd
- Air pollution prevention system for bathroom space15 Sep 2026US 12,736,246 B2Microjet Technology Co., Ltd.
- Refrigerant leakage control method and device, air conditioner, and computer-readable storage medium8 Oct 2026US 2026/0309350 A1Gd Midea Heating & Ventilating Equipment Co., Ltd.
- An apparatus for ventilating an environment24 Sep 2026US 2026/0287189 A1Earthonomic Ecosolutions Private Limited
- System and method for characterizing outdoor air ventilation in an indoor environment17 Sep 2026US 2026/0276227 A1Poppy Health, Inc.
- Modular structural enclosure for a roof top hvac unit17 Sep 2026US 2026/0276239 A1Clauger USA, LLC
- Device and method for carrying out decontamination measures, method for preparing decontamination measures and method for monitoring decontamination measures10 Sep 2026US 2026/0266486 A1
Most cited
By later US patents
- Home cleaning robot729US 6,459,955 B1The Procter & Gamble Company · 2002
- Apparatus and method for automatic climate control456US 5,395,042 ASmart Systems International · 1995
- Environmental sensor device with alarms333US 9,280,884 B1Oberon, Inc. · 2016
- Contaminant monitoring and air filtration system256US 10,422,727 B22019
- Two-way wireless HVAC system and thermostat226US 5,224,648 AAmerican Standard Inc. · 1993