F24H 1/523
Heat exchangers for sanitary water directly heated by the burner
Official title: {Heat exchangers for sanitary water directly heated by the burner}
F24H1/523 (Heat exchangers for sanitary water directly heated by the burner) appears on 14 US grants and 16 published applications in this corpus.
Search patents in F24H- Granted patents
- 14
- Published applications
- 16
- Assignees
- 7
- Inventors
- 34
- Latest grant
- 22 Feb 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 1 | 1 |
| 2009 | 2 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 3 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 3 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 2 |
| 2022 | 2 | 0 |
| 2023 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Heating and hot water supply device22 Feb 2022US 11,255,550 B2Noritz Corporation
- Heat exchanger for gas appliance and method for manufacturing heat exchanger for gas appliance18 Jan 2022US 11,226,134 B2Paloma Co., Ltd.
- Water heater14 Apr 2020US 10,619,889 B2Paloma Co., Ltd.
- Hot water-centered combined hot water and heating boiler17 Apr 2018US 9,945,566 B2Kyungdong Navien Co., Ltd.
- Equipment for producing domestic hot water15 Sep 2015US 9,134,037 B2Giannoni France
- Water heating device5 Oct 2023US 2023/0314010 A1Rinnai Corporation
- Heating group29 Apr 2021US 2021/0123609 A1
- Heating and hot water supply device18 Mar 2021US 2021/0080120 A1Noritz Corporation
- Heat exchanger for gas appliance and method for manufacturing heat exchanger for gas appliance1 Oct 2020US 2020/0309408 A1Paloma Co., Ltd.
- Hydro-furnaces and related methods for vehicles11 Jul 2019US 2019/0212033 A1
Most cited
By later US patents
- Water heater17US 8,267,051 B2Rinnai Corporation · 2012
- Heat exchanger and water heater12US 7,523,721 B2Noritz Corporation · 2009
- Double pipes for mixed boilers, to the methods of manufacturing such pipes and to the corresponding boilers6US 4,996,950 AChaffoteaux et Maury · 1991
- Stacket-up type heat exchanger for a gas boiler6US 5,613,553 ADaewoo Electronics Co., Ltd. · 1997
- Heat exchanger and water heater6US 7,428,883 B2Noritz Corporation · 2008