F24H 1/403
The water tubes being arranged in one or more circles around the
Official title: {the water tubes being arranged in one or more circles around the burner}
F24H1/403 (The water tubes being arranged in one or more circles around the) appears on 41 US grants and 28 published applications in this corpus.
Search patents in F24H- Granted patents
- 41
- Published applications
- 28
- Assignees
- 33
- Inventors
- 82
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 3 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 1 | 2 |
| 2016 | 1 | 2 |
| 2017 | 1 | 3 |
| 2018 | 3 | 1 |
| 2019 | 2 | 3 |
| 2020 | 0 | 1 |
| 2021 | 2 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 1 |
| 2025 | 0 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Heat exchanger for heating devices, and tube-assembly module for a heat exchanger10 Feb 2026US 12,546,510 B2Clada S.R.L.
- Notched base ring for use with a heat exchanger of a pressure washer14 Mar 2023US 11,604,033 B2Northern Tool & Equipment Company, Inc.
- High temperature fluid generator29 Jun 2021US 11,047,596 B1Superior Boiler, LLC
- Heat exchange device and heat source machine12 Jan 2021US 10,890,356 B2Noritz Corporation
- Heat exchanger with dual concentric tube rings29 Oct 2019US 10,458,677 B2Lochinvar, LLC
- Fired process heater with a manifold support assembly11 Jun 2026US 2026/0160415 A1Zeeco, Inc.
- Boiler and use thereof30 Jan 2025US 2025/0035338 A1La Nuova Coterm Srl
- Gas burner and boiler28 Mar 2024US 2024/0102648 A1Miura Co., Ltd.
- Heat exchanger for heating devices, and tube-assembly module for a heat exchanger20 Jul 2023US 2023/0228455 A1Cosmogas S.R.L.
- Notched base ring for use with a heat exchanger of a pressure washer18 Feb 2021US 2021/0048252 A1Northern Tool & Equipment Company, Inc.
Most cited
By later US patents
- Gas water heater/boiler62US 4,793,800 ALochinvar Water Heater Corporation · 1988
- Water heater with continuously variable air and fuel input47US 6,694,926 B2Lochinvar, LLC · 2004
- Gas water heater/boiler43US 4,723,513 ALochinvar Water Heater Corporation · 1988
- High efficiency water heating system40US 4,445,464 AAdvanced Mechanical Technology, Inc. · 1984
- Burner40US 6,619,951 B2Lochinvar, LLC · 2003