F24F 3/0527
In which treated air having differing temperatures is conducted through independent conduits
Official title: {in which treated air having differing temperatures is conducted through independent conduits from the central station to various spaces to be treated, i.e. so-called "multi-Zone" systems (F24F3/0525 takes precedence)}
F24F3/0527 (In which treated air having differing temperatures is conducted through independent conduits) appears on 36 US grants and 18 published applications in this corpus.
Search patents in F24F- Granted patents
- 36
- Published applications
- 18
- Assignees
- 16
- Inventors
- 53
- Latest grant
- 16 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 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 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 2 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 5 |
| 2020 | 2 | 4 |
| 2021 | 3 | 2 |
| 2022 | 2 | 2 |
| 2023 | 3 | 1 |
| 2024 | 2 | 1 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Linearization of airflow through zone dampers of an HVAC system16 Sep 2025US 12,416,426 B2Rheem Manufacturing Company
- Air-conditioning system8 Jul 2025US 12,352,463 B2Fh Alliance Inc.
- Distributed adaptive control of a multi-zone HVAC system27 Aug 2024US 12,072,114 B2University of Southern California
- Air-conditioning system20 Feb 2024US 11,906,198 B2Fh Alliance Inc.
- Linearization of airflow through zone dampers of an HVAC system18 Jul 2023US 11,703,249 B2Rheem Manufacturing Company
- Air-conditioning system2 May 2024US 2024/0142119 A1Fh Alliance Inc.
- Linearization of airflow through zone dampers of an hvac system28 Sep 2023US 2023/0304693 A1Rheem Manufacturing Company
- Air-conditioning system24 Nov 2022US 2022/0373198 A1Fh Alliance Inc.
- Linearization of airflow through zone dampers of an hvac system1 Sep 2022US 2022/0275962 A1Rheem Manufacturing Company
- Hvac controller with a zone commissioning mode23 Dec 2021US 2021/0396416 A1Ademco Inc.
Most cited
By later US patents
- Method and apparatus for controlling air-conditioning systems51US 4,136,732 ARanco Incorporated · 1979
- Zone air-conditioning control system for motor vehicle compartment49US 4,537,245 ANippondenso Co., Ltd. · 1985
- Optimum environmental control system for a building39US 4,034,801 ARobert J. Sigel, Inc. · 1977
- Air conditioning apparatus35US 5,402,844 ACarrier Corporation · 1995
- Multi-source heat pump HVAC system32US 4,100,763 AInternational Telephone and Telegraph Corporation · 1978