F24H 9/0089
By double wall boiler mantle
Official title: {by double wall boiler mantle}
F24H9/0089 (By double wall boiler mantle) appears on 12 US grants and 10 published applications in this corpus.
Search patents in F24H- Granted patents
- 12
- Published applications
- 10
- Assignees
- 13
- Inventors
- 31
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 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 | 1 |
| 2008 | 1 | 3 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 2 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 1 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Combustion chamber and gas apparatus14 Oct 2025US 12,442,531 B2Midea Group Co., Ltd.
- Heating device with improved efficiency2 Sep 2025US 12,405,010 B2Suter Entfeuchtungstechnik AG
- Bell mouth, air supply assembly including the bell mouth, and air supply control system using the bell mouth9 Aug 2022US 11,408,641 B2Kyungdong Navien Co., Ltd.
- Combustion apparatus29 Aug 2017US 9,746,201 B2Rinnai Corporation
- Water heater sealed combustion chamber assembly24 May 2011US 7,946,257 B2Rheem Manufacturing Company
- Heating device with improved efficiency4 May 2023US 2023/0139453 A1Suter Entfeuchtungstechnik AG
- Combustion chamber and gas apparatus24 Nov 2022US 2022/0373178 A1Midea Group Co., Ltd.
- Bell mouth, air supply assembly including the bell mouth, and air supply control system using the bell mouth11 Mar 2021US 2021/0071911 A1Kyungdong Navien Co., Ltd.
- Combustion apparatus16 Feb 2017US 2017/0045262 A1Rinnai Corporation
- Water Heater Sealed Combustion Chamber Assembly15 Oct 2009US 2009/0255487 A1Rheem Manufacturing Company
Most cited
By later US patents
- Heating boiler having a vertical burner tube21US 4,679,528 ARemeha Fabrieken B.V. · 1987
- Water heating apparatus18US 5,311,843 AWeben-Jarco, Inc. · 1994
- Boilers11US 4,909,190 AStelrad Group Limited · 1990
- Method for exchanging heat and a device for carrying out said method9US 4,287,938 A1981
- Instantaneous fuel-fired water heater with low temperature plastic vent structure5US 7,337,752 B2Rheem Manufacturing Company · 2008