F24F 2003/006
With two air ducts for separately transporting treated hot and cold primary
Official title: {with two air ducts for separately transporting treated hot and cold primary air from the central station to air treatment units located in or near the rooms}
F24F2003/006 (With two air ducts for separately transporting treated hot and cold primary) appears on 6 US grants and 2 published applications in this corpus.
Search patents in F24F- Granted patents
- 6
- Published applications
- 2
- Assignees
- 4
- Inventors
- 10
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 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 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 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 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for controlling a multi-zone dual deck air handling unit27 Jan 2026US 12,535,237 B2Siemens Industry, Inc.
- Air terminal for heating or air conditioning system15 Jan 2019US 10,180,285 B2Carrier Corporation
- Temperature control of unoccupied living spaces29 Jul 1980US 4,215,408 AUnited Technologies Corporation
- Energy conservative control of heating, ventilating, and air conditioning (HVAC) systems27 May 1980US 4,205,381 AUnited Technologies Corporation
- Dual duct variable volume air conditioning system2 Aug 1977US 4,039,124 AUniversal Pneumatic Controls, Inc.
Most cited
By later US patents
- Energy conservative control of heating, ventilating, and air conditioning (HVAC) systems119US 4,205,381 AUnited Technologies Corporation · 1980
- Temperature control of unoccupied living spaces74US 4,215,408 AUnited Technologies Corporation · 1980
- Dual duct variable volume air conditioning system16US 3,934,795 AUniversal Pneumatic Controls, Inc. · 1976
- Dual duct variable volume air conditioning system13US 4,039,124 AUniversal Pneumatic Controls, Inc. · 1977
- Air terminal for heating or air conditioning system3US 10,180,285 B2Carrier Corporation · 2019