F24H 1/24
With water mantle surrounding the combustion chamber or chambers
Official title: with water mantle surrounding the combustion chamber or chambers
F24H1/24 (With water mantle surrounding the combustion chamber or chambers) appears on 367 US grants and 220 published applications in this corpus.
Search patents in F24H- Granted patents
- 367
- Published applications
- 220
- Assignees
- 168
- Inventors
- 560
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 8 | 0 |
| 1978 | 4 | 0 |
| 1979 | 6 | 0 |
| 1980 | 7 | 0 |
| 1981 | 10 | 0 |
| 1982 | 9 | 0 |
| 1983 | 17 | 0 |
| 1984 | 18 | 0 |
| 1985 | 9 | 0 |
| 1986 | 13 | 0 |
| 1987 | 13 | 0 |
| 1988 | 8 | 0 |
| 1989 | 15 | 0 |
| 1990 | 13 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 7 | 0 |
| 1995 | 7 | 0 |
| 1996 | 5 | 0 |
| 1997 | 2 | 0 |
| 1998 | 9 | 0 |
| 1999 | 7 | 0 |
| 2000 | 9 | 0 |
| 2001 | 3 | 1 |
| 2002 | 4 | 3 |
| 2003 | 4 | 4 |
| 2004 | 3 | 3 |
| 2005 | 1 | 3 |
| 2006 | 2 | 4 |
| 2007 | 1 | 5 |
| 2008 | 2 | 5 |
| 2009 | 1 | 13 |
| 2010 | 5 | 11 |
| 2011 | 3 | 9 |
| 2012 | 6 | 12 |
| 2013 | 5 | 13 |
| 2014 | 15 | 14 |
| 2015 | 3 | 9 |
| 2016 | 5 | 11 |
| 2017 | 10 | 15 |
| 2018 | 12 | 19 |
| 2019 | 16 | 20 |
| 2020 | 14 | 13 |
| 2021 | 12 | 12 |
| 2022 | 10 | 12 |
| 2023 | 8 | 3 |
| 2024 | 9 | 2 |
| 2025 | 4 | 3 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of manufacturing heat exchanger pipe21 Oct 2025US 12,449,160 B2
- Compact fluid heating system with high bulk heat flux using elevated heat exchanger pressure drop1 Jul 2025US 12,345,445 B2Fulton Group N.A., Inc.
- Heat exchanger unit17 Jun 2025US 12,331,959 B2Kyungdong Navien Co., Ltd.
- Wavy smoke tube structure of boiler22 Apr 2025US 12,281,818 B2
- Heat exchanger pipe, method of manufacturing heat exchanger pipe, heat exchanger fin, elliptical heat exchanger pipe, and hot water storage type heat exchanger having elliptical heat exchanger pipe10 Dec 2024US 12,163,695 B2
- Sieve element of a tubular heat exchanger and its use in a tubular heat exchanger22 Jan 2026US 2026/0022901 A1Aic Spolka Akcyjna
- Heat exchanger unit4 Sep 2025US 2025/0277602 A1Kyungdong Navien Co., Ltd.
- Water heater15 May 2025US 2025/0155162 A1Kyungdong Navien Co., Ltd.
- Heat exchanger and water heater17 Apr 2025US 2025/0123061 A1Wuhu Midea Smart Kitchen Appliance Manufacturing Co., Ltd.
- Heat exchanger unit and method for manufacturing the same17 Oct 2024US 2024/0344738 A1Kyungdong Navien Co., Ltd.
Most cited
By later US patents
- Pulsing combustion116US 4,569,310 AArkansas Patents, Inc. · 1986
- Low NO.sub.x multistage combustor110US 6,089,855 AThermo Power Corporation · 2000
- Pulsing combustion90US 4,479,484 AArkansas Patents, Inc. · 1984
- Pulsing combustion90US 4,651,712 AArkansas Patents, Inc. · 1987
- Pulsing combustion85US 4,488,865 AArkansas Patents, Inc. · 1984