F24D 19/1084
For air heating systems
Official title: {for air heating systems}
F24D19/1084 (For air heating systems) appears on 197 US grants and 207 published applications in this corpus.
Search patents in F24D- Granted patents
- 197
- Published applications
- 207
- Assignees
- 108
- Inventors
- 437
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 6 | 0 |
| 1980 | 5 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 2 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 4 |
| 2010 | 0 | 2 |
| 2011 | 0 | 9 |
| 2012 | 2 | 12 |
| 2013 | 5 | 9 |
| 2014 | 7 | 10 |
| 2015 | 3 | 25 |
| 2016 | 10 | 13 |
| 2017 | 11 | 23 |
| 2018 | 20 | 7 |
| 2019 | 17 | 8 |
| 2020 | 10 | 10 |
| 2021 | 10 | 8 |
| 2022 | 5 | 16 |
| 2023 | 14 | 14 |
| 2024 | 13 | 12 |
| 2025 | 8 | 11 |
| 2026 | 3 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Furnace control systems and methods25 Aug 2026US 12,716,617 B2Johnson Controls Light Commercial IP GmbH
- Method of operating an HVAC system16 Jun 2026US 12,656,014 B2Belimo Holding AG
- Furnace monitoring and control based on rate of flue gas temperature change27 Jan 2026US 12,535,229 B2Carrier Corporation
- Gas furnace and air conditioner having the same11 Nov 2025US 12,467,660 B2LG Electronics Inc.
- Flowrate determination system and method for a flow control valve14 Oct 2025US 12,442,556 B2Tyco Fire & Security GmbH
- Systems and methods for integrating a water heating unit and a heat pump1 Oct 2026US 2026/0298484 A1
- Systems and methods for integrating a water heating unit and a heat pump1 Oct 2026US 2026/0298485 A1
- Thermal fluid conveyance manifold and operation thereof17 Sep 2026US 2026/0276215 A1
- Systems and Methods for Modulating Heating and/or Cooling Appliance Control Based on Return Air Temperature27 Aug 2026US 2026/0251337 A1Rheem Manufacturing Company
- System and method for ultra-low fire gas heat algorithms11 Jun 2026US 2026/0160417 A1
Most cited
By later US patents
- Dual fuel heat pump controller130US 4,971,136 AElectric Power Research Institute, Inc. · 1990
- Air conditioning apparatus including a heat pump73US 4,143,707 AThe Trane Company · 1979
- Method and apparatus for controlling the operation of an indoor fan associated with an air conditioning unit70US 4,449,375 ACarrier Corporation · 1984
- Adaptive fuzzy controller that modifies membership functions64US 5,822,740 AHoneywell Inc. · 1998
- Control method and apparatus for an air conditioner using a heat pump45US 4,603,556 AHitachi, Ltd. · 1986