F23B 10/02
Including separate secondary combustion chambers
Official title: including separate secondary combustion chambers
F23B10/02 (Including separate secondary combustion chambers) appears on 30 US grants and 40 published applications in this corpus.
Search patents in F23B- Granted patents
- 30
- Published applications
- 40
- Assignees
- 26
- Inventors
- 71
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 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 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 3 |
| 2012 | 0 | 1 |
| 2013 | 2 | 3 |
| 2014 | 1 | 5 |
| 2015 | 2 | 4 |
| 2016 | 1 | 7 |
| 2017 | 1 | 1 |
| 2018 | 4 | 0 |
| 2019 | 3 | 3 |
| 2020 | 2 | 2 |
| 2021 | 2 | 1 |
| 2022 | 0 | 4 |
| 2023 | 3 | 2 |
| 2024 | 1 | 2 |
| 2025 | 1 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electronic closed-loop control device for fireplaces comprising a lower combustion system31 Mar 2026US 12,590,703 B2Maxitrol Company
- Downward mobile gasification boiler for surface gas phase combustion and pyrolysis of biomass briquette11 Nov 2025US 12,467,620 B2Heilongjiang Zhongtan Jiahe Biomass Technology Research and Development Co.
- Method of combusting aluminium and system therefor13 Feb 2024US 11,897,782 B2Saab AB
- Biomass heating system with optimized flue gas treatment25 Jul 2023US 11,708,999 B2Sl-Technik GmbH
- Firebox floor of a furnace for combusting wood18 Jul 2023US 11,703,222 B2Heatmaster Furnaces Inc.
- Electronic closed-loop control device for fireplaces comprising a lower combustion system23 Jul 2026US 2026/0210553 A1Maxitrol Company
- Biomass Fuel Burning Furnace12 Dec 2024US 2024/0410569 A1Zhongshan Junwei Home Appliances Co., Ltd.
- Electronic closed-loop control device for fireplaces comprising a lower combustion system5 Sep 2024US 2024/0295324 A1Maxitrol Company
- Downward mobile gasification boiler for surface gas phase combustion and pyrolysis of biomass briquette15 Jun 2023US 2023/0184424 A1Heilongjiang Zhongtan Jiahe Biomass Te Chnology Research and Development Co.
- Device for reburning furnace combustion products8 Jun 2023US 2023/0175697 A1
Most cited
By later US patents
- Apparatus for producing combustible gases from carbonaceous materials23US 4,030,895 A1977
- Device for supply of secondary air, and boiler with the device22US 4,903,616 A1990
- System and process for production of fuel gas from solid biomass fuel and for combustion of such fuel gas21US 5,823,122 AAlternative Energy Development, Inc. · 1998
- Woodstove for heated air forced into a secondary combustion chamber and method of operating same13US 5,007,404 AThe United States of America as represented by the Administrator of the U. S. Environmental Protection Agency · 1991
- Wood burning stove5US 4,473,059 A1984