F24H 9/1881
Using fluid fuel
Official title: using fluid fuel
F24H9/1881 (Using fluid fuel) appears on 82 US grants and 82 published applications in this corpus.
Search patents in F24H- Granted patents
- 82
- Published applications
- 82
- Assignees
- 57
- Inventors
- 181
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 1 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 5 |
| 2011 | 2 | 1 |
| 2012 | 0 | 4 |
| 2013 | 3 | 1 |
| 2014 | 4 | 3 |
| 2015 | 2 | 10 |
| 2016 | 3 | 12 |
| 2017 | 3 | 3 |
| 2018 | 7 | 5 |
| 2019 | 7 | 8 |
| 2020 | 3 | 4 |
| 2021 | 5 | 6 |
| 2022 | 2 | 4 |
| 2023 | 6 | 4 |
| 2024 | 3 | 3 |
| 2025 | 5 | 2 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Gas furnace and air conditioner having the same5 May 2026US 12,618,559 B2LG Electronics Inc.
- Gas furnace and air conditioner having the same11 Nov 2025US 12,467,660 B2LG Electronics Inc.
- Air handling unit30 Sep 2025US 12,429,248 B2Trane International Inc.
- Top fired outdoor gas heat exchanger2 Sep 2025US 12,405,030 B2Tyco Fire & Security GmbH
- HVAC system with baffles26 Aug 2025US 12,398,920 B2Johnson Controls Light Commercial IP GmbH
- Parking heater25 Jun 2026US 2026/0177283 A1Shenzhen Yisi Technology Co., Ltd.
- Variable-frequency heater12 Mar 2026US 2026/0071780 A1Zhongshan Powtek Appliances Mfg., Ltd.
- Process and apparatus for combusting hydrogen and recycling combustion products25 Sep 2025US 2025/0297774 A1
- Condensate pan for a heat exchanger28 Aug 2025US 2025/0271172 A1Tyco Fire & Security GmbH
- Process air unit for heating process air14 Nov 2024US 2024/0377102 A1Dürr Systems AG, Stuttgart
Most cited
By later US patents
- Portable forced air heater30US 4,244,349 AScheu Manufacturing Company · 1981
- Acoustics energy dissipator for furnace29US 5,408,986 AInter-City Products Corporation (USA) · 1995
- Inshot fuel burner Nox reduction device with integral positioning support structure26US 5,546,925 ARheem Manufacturing Company · 1996
- Dual fuel heating system and air shutter23US 8,757,139 B22014
- Gas-fired furnace and intake manifold for low NOx applications20US 8,616,194 B2Trane International Inc. · 2013