F24F 2003/003
Air-conditioning systems in which conditioned primary air is supplied from one or
Official title: {with primary air treatment in the central station and subsequent secondary air treatment in air treatment units located in or near the rooms}
F24F2003/003 (Air-conditioning systems in which conditioned primary air is supplied from one or) appears on 46 US grants and 44 published applications in this corpus.
Search patents in F24F- Granted patents
- 46
- Published applications
- 44
- Assignees
- 31
- Inventors
- 89
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 5 |
| 2016 | 1 | 1 |
| 2017 | 0 | 1 |
| 2018 | 3 | 1 |
| 2019 | 3 | 3 |
| 2020 | 2 | 6 |
| 2021 | 2 | 2 |
| 2022 | 4 | 12 |
| 2023 | 10 | 5 |
| 2024 | 4 | 2 |
| 2025 | 4 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Terminal unit and method for improved indoor cooling19 May 2026US 12,631,368 B2FT Energy Controls, LLC
- System and method for controlling a multi-zone dual deck air handling unit27 Jan 2026US 12,535,237 B2Siemens Industry, Inc.
- System and method for automatic detection and clustering of variable air volume units in a building management system7 Oct 2025US 12,435,893 B2Tyco Fire & Security GmbH
- Wireless remote indoor sensor for home automation26 Aug 2025US 12,398,910 B2Lennox Industries Inc.
- Air supply system3 Jun 2025US 12,320,539 B2Daikin Industries, Ltd.
- Wireless remote indoor sensor for home automation20 Nov 2025US 2025/0354715 A1Lennox Industries Inc.
- Integrated space conditioning and water heating/cooling systems and methods thereto20 Feb 2025US 2025/0060114 A1Rheem Manufacturing Company
- Wireless Remote Indoor Sensor for Home Automation1 Feb 2024US 2024/0035699 A1Lennox Industries Inc.
- System and method for controlling a multi-zone dual deck air handling unit18 Jan 2024US 2024/0019153 A1Siemens Industry, Inc.
- Integrated space conditioning and water heating/cooling systems and methods thereto9 Nov 2023US 2023/0358415 A1Rheem Manufacturing Company
Most cited
By later US patents
- Individual workspace environmental control177US 5,725,148 A1998
- Energy conservative control of heating, ventilating, and air conditioning (HVAC) systems119US 4,205,381 AUnited Technologies Corporation · 1980
- Desiccant assisted multi-use air pre-conditioner unit with system heat recovery capability107US 5,325,676 A1994
- Temperature control of unoccupied living spaces74US 4,215,408 AUnited Technologies Corporation · 1980
- Terminal unit with active diffuser69US 6,079,626 A2000