F24H 8/00
Fluid heaters characterised by means for extracting latent heat from flue gases
Official title: Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
F24H8/00 (Fluid heaters characterised by means for extracting latent heat from flue gases) appears on 526 US grants and 477 published applications in this corpus.
Search patents in F24H- Granted patents
- 526
- Published applications
- 477
- Assignees
- 226
- Inventors
- 946
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 9 | 0 |
| 1984 | 9 | 0 |
| 1985 | 14 | 0 |
| 1986 | 10 | 0 |
| 1987 | 20 | 0 |
| 1988 | 14 | 0 |
| 1989 | 10 | 0 |
| 1990 | 12 | 0 |
| 1991 | 10 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 15 | 0 |
| 1995 | 10 | 0 |
| 1996 | 6 | 0 |
| 1997 | 8 | 0 |
| 1998 | 6 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 4 |
| 2003 | 5 | 7 |
| 2004 | 4 | 4 |
| 2005 | 7 | 10 |
| 2006 | 3 | 6 |
| 2007 | 3 | 13 |
| 2008 | 7 | 9 |
| 2009 | 2 | 14 |
| 2010 | 5 | 12 |
| 2011 | 7 | 27 |
| 2012 | 7 | 28 |
| 2013 | 6 | 18 |
| 2014 | 16 | 21 |
| 2015 | 12 | 28 |
| 2016 | 20 | 35 |
| 2017 | 24 | 30 |
| 2018 | 30 | 46 |
| 2019 | 45 | 24 |
| 2020 | 28 | 42 |
| 2021 | 32 | 19 |
| 2022 | 25 | 24 |
| 2023 | 24 | 17 |
| 2024 | 11 | 14 |
| 2025 | 12 | 15 |
| 2026 | 9 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Heat exchanger6 Oct 2026US 12,753,977 B2Kyungdong Navien Co., Ltd.
- Heat exchanger with tube bundle comprising at least two sections15 Sep 2026US 12,736,288 B2Valmex S.P.A.
- Water tank assembly for heating device, and heating device25 Aug 2026US 12,716,614 B2Wuhu Midea Kitchen and Bath Appliances Mfg. Co., Ltd.
- Burner and water heater comprising same25 Aug 2026US 12,716,615 B2Kyungdong Navien Co., Ltd.
- Furnace with improved efficiency controls14 Jul 2026US 12,680,729 B1Trane International Inc.
- Economizer and boiler8 Oct 2026US 2026/0309323 A1Kurita Water Industries Ltd.
- Baffle for condensing flue tubes within a water heating appliance8 Oct 2026US 2026/0309367 A1Bradford White Corporation
- Furnace with improved efficiency controls8 Oct 2026US 2026/0309369 A1Trane International Inc.
- Furnace combustion gas sensing and control systems and methods1 Oct 2026US 2026/0298468 A1
- Single pass high-efficiency condensing water heater27 Aug 2026US 2026/0251350 A1Bradford White Corporation
Most cited
By later US patents
- Integrated hot water supply and space heating system83US 5,076,494 ACarrier Corporation · 1991
- Apparatus and method for burning a combustible gas, and a heat exchanger for use in this apparatus62US 4,641,631 AColumbia Gas System Service Corporation · 1987
- Heating apparatus55US 7,647,897 B2Noritz Corporation · 2010
- High efficiency commercial water heater53US 5,687,678 AWeben-Jarco, Inc. · 1997
- Plastic secondary heat exchanger apparatus for a high efficiency condensing furnace48US 5,178,124 ARheem Manufacturing Company · 1993