F24F 2110/65
Concentration of specific substances or contaminants
F24F2110/65 (Concentration of specific substances or contaminants) appears on 676 US grants and 1,099 published applications in this corpus.
Search patents in F24F- Granted patents
- 676
- Published applications
- 1,099
- Assignees
- 447
- Inventors
- 2,134
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 10 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 8 | 10 |
| 2003 | 9 | 12 |
| 2004 | 6 | 10 |
| 2005 | 3 | 10 |
| 2006 | 8 | 17 |
| 2007 | 4 | 10 |
| 2008 | 5 | 10 |
| 2009 | 4 | 7 |
| 2010 | 6 | 8 |
| 2011 | 6 | 12 |
| 2012 | 4 | 13 |
| 2013 | 5 | 10 |
| 2014 | 6 | 10 |
| 2015 | 7 | 23 |
| 2016 | 10 | 28 |
| 2017 | 15 | 30 |
| 2018 | 19 | 54 |
| 2019 | 37 | 67 |
| 2020 | 46 | 74 |
| 2021 | 52 | 120 |
| 2022 | 66 | 138 |
| 2023 | 73 | 125 |
| 2024 | 91 | 126 |
| 2025 | 79 | 102 |
| 2026 | 59 | 73 |
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.
- Indoor environment control system and operation method thereof22 Sep 2026US 12,742,562 B2Industry-Academic Cooperation Foundation, Dankook University
- Air pollution prevention system for bathroom space15 Sep 2026US 12,736,246 B2Microjet Technology Co., Ltd.
- Air purifier15 Sep 2026US 12,736,443 B2Samsung Electronics Co., Ltd.
- Indoor air cleaning system8 Sep 2026US 12,729,868 B2Microjet Technology 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.
- Ventilation device having oxygen-supplying function and ventilation method using same3 Sep 2026US 2026/0258962 A1LG Electronics Inc.
- Hvac systems with start time optimization3 Sep 2026US 2026/0258963 A1Tyco Fire & Security GmbH
- Air quality monitoring system and method3 Sep 2026US 2026/0259186 A1Antrum, Inc.
Most cited
By later US patents
- Apparatus and method for automatic climate control456US 5,395,042 ASmart Systems International · 1995
- Two-way wireless HVAC system and thermostat226US 5,224,648 AAmerican Standard Inc. · 1993
- Adaptive intelligent circulation control methods and systems207US 7,222,494 B2Honeywell International Inc. · 2007
- Thermostat incorporating thin film carbon dioxide sensor and environmental control system168US 6,398,118 B12002
- Method for operating variable speed heat pumps and air conditioners156US 4,873,649 AHoneywell Inc. · 1989