F24H 9/2085
Using fluid fuel
Official title: {using fluid fuel}
F24H9/2085 (Using fluid fuel) appears on 174 US grants and 178 published applications in this corpus.
Search patents in F24H- Granted patents
- 174
- Published applications
- 178
- Assignees
- 83
- Inventors
- 301
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 8 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 1 |
| 2009 | 0 | 5 |
| 2010 | 2 | 4 |
| 2011 | 4 | 10 |
| 2012 | 3 | 10 |
| 2013 | 8 | 13 |
| 2014 | 7 | 11 |
| 2015 | 3 | 16 |
| 2016 | 10 | 9 |
| 2017 | 9 | 16 |
| 2018 | 12 | 10 |
| 2019 | 15 | 8 |
| 2020 | 7 | 9 |
| 2021 | 8 | 14 |
| 2022 | 5 | 12 |
| 2023 | 11 | 10 |
| 2024 | 11 | 7 |
| 2025 | 9 | 5 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Furnace control systems and methods25 Aug 2026US 12,716,617 B2Johnson Controls Light Commercial IP GmbH
- Gas furnace and air conditioner having the same5 May 2026US 12,618,559 B2LG Electronics Inc.
- System and method for controlling HVAC systems5 May 2026US 12,618,579 B2Daikin Manufacturing Company, L.P.
- Gas furnace and air conditioner having the same11 Nov 2025US 12,467,660 B2LG Electronics Inc.
- Top fired outdoor gas heat exchanger2 Sep 2025US 12,405,030 B2Tyco Fire & Security GmbH
- Hybrid duct device for heating an air flow16 Jul 2026US 2026/0202092 A1Fives Itas S.P.A.
- Waste-heat recirculating system, method of installation and method of use thereof30 Apr 2026US 2026/0117989 A1Highland Heat Harvesters Ltd
- Combination heating system for recreational vehicles and boats16 Apr 2026US 2026/0104181 A1Aqua-Hot Heating Systems, LLC
- Heating medium circulation apparatus9 Apr 2026US 2026/0098663 A1Rinnai Corporation
- Condensate pan for a heat exchanger28 Aug 2025US 2025/0271172 A1Tyco Fire & Security GmbH
Most cited
By later US patents
- Multi-phase modular comfort controlled heating system131US 4,337,893 AEnergy Savings Parhelion · 1982
- Gas heater with alarm system91US 5,807,098 ADESA International, Inc. · 1998
- Furnace control apparatus having a circulator failure detection circuit for a downflow furnace56US 4,502,625 AHoneywell Inc. · 1985
- Automatic control of air delivery in forced air furnaces54US 6,000,622 AIntegrated Control Devices, Inc. · 1999
- Control methods and apparatus for gas-fired combustors50US 5,590,642 AGas Research Institute · 1997