F24F 3/06
Air-conditioning systems in which conditioned primary air is supplied from one or
Official title: characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
F24F3/06 (Air-conditioning systems in which conditioned primary air is supplied from one or) appears on 583 US grants and 597 published applications in this corpus.
Search patents in F24F- Granted patents
- 583
- Published applications
- 597
- Assignees
- 204
- Inventors
- 1,306
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 7 | 0 |
| 1990 | 3 | 0 |
| 1991 | 8 | 0 |
| 1992 | 18 | 0 |
| 1993 | 10 | 0 |
| 1994 | 25 | 0 |
| 1995 | 7 | 0 |
| 1996 | 7 | 0 |
| 1997 | 9 | 0 |
| 1998 | 7 | 0 |
| 1999 | 8 | 0 |
| 2000 | 8 | 0 |
| 2001 | 4 | 0 |
| 2002 | 6 | 3 |
| 2003 | 6 | 4 |
| 2004 | 3 | 10 |
| 2005 | 3 | 10 |
| 2006 | 5 | 14 |
| 2007 | 3 | 7 |
| 2008 | 3 | 20 |
| 2009 | 5 | 11 |
| 2010 | 11 | 16 |
| 2011 | 9 | 37 |
| 2012 | 9 | 38 |
| 2013 | 8 | 26 |
| 2014 | 7 | 30 |
| 2015 | 22 | 56 |
| 2016 | 30 | 32 |
| 2017 | 46 | 22 |
| 2018 | 39 | 22 |
| 2019 | 30 | 35 |
| 2020 | 23 | 32 |
| 2021 | 34 | 39 |
| 2022 | 28 | 46 |
| 2023 | 34 | 34 |
| 2024 | 37 | 22 |
| 2025 | 26 | 21 |
| 2026 | 11 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multi-connected air conditioner with refrigerant and water system25 Aug 2026US 12,716,609 B2Tsinghua University
- Hybrid heating and cooling system7 Jul 2026US 12,674,588 B2Seeley International Pty Ltd
- Terminal unit and method for improved indoor cooling19 May 2026US 12,631,368 B2FT Energy Controls, LLC
- Air conditioner5 May 2026US 12,618,570 B2Qingdao Hisense Hitachi Air-Conditioning Systems Co., Ltd.
- Method, system and computer program product for controlling an HVAC system5 May 2026US 12,618,583 B2Belimo Holding AG
- Airframe system and method of controlling airflow8 Oct 2026US 2026/0306210 A1SLD Technology, Inc.
- Comprehensive energy supply system with hydrogen production and prediction function and integrated with hydrogen energy storage by residual flue gas of gas engine24 Sep 2026US 2026/0286916 A1The Architectural Design & Research Institute of Zhejiang University Co., Ltd.
- System and method for heating and cooling24 Sep 2026US 2026/0287196 A1Daikin Industries, Ltd.
- Air conditioner30 Jul 2026US 2026/0218922 A1LG Electronics Inc.
- Air conditioning system30 Jul 2026US 2026/0218935 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Control system for multiple heating, ventilation and air conditioning units121US 7,809,472 B1Custom Manufacturing & Engineering, Inc. · 2010
- Air handling system utilizing direct expansion cooling120US 5,172,565 AHoneywell Inc. · 1992
- Desiccant assisted multi-use air pre-conditioner unit with system heat recovery capability107US 5,325,676 A1994
- Multiple type air conditioning system which distributes appropriate amount of refrigerant to a plurality of air conditioning units96US 5,142,877 AKabushiki Kaisha Toshiba · 1992
- Thermal reservoir for two-pipe hydronic air-conditioning system86US 6,991,028 B22006