F23B 80/00
Combustion apparatus characterised by means creating a distinct flow path for flue
Official title: Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel
F23B80/00 (Combustion apparatus characterised by means creating a distinct flow path for flue) appears on 64 US grants and 85 published applications in this corpus.
Search patents in F23B- Granted patents
- 64
- Published applications
- 85
- Assignees
- 51
- Inventors
- 163
- Latest grant
- 6 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 3 |
| 2009 | 1 | 4 |
| 2010 | 0 | 4 |
| 2011 | 4 | 5 |
| 2012 | 2 | 6 |
| 2013 | 3 | 2 |
| 2014 | 3 | 4 |
| 2015 | 5 | 3 |
| 2016 | 2 | 7 |
| 2017 | 1 | 8 |
| 2018 | 4 | 9 |
| 2019 | 6 | 2 |
| 2020 | 1 | 6 |
| 2021 | 8 | 2 |
| 2022 | 0 | 3 |
| 2023 | 1 | 8 |
| 2024 | 5 | 1 |
| 2025 | 3 | 4 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Modular smoker6 Jan 2026US 12,514,273 B2Middleton Mixology LLC
- 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.
- Heating device with improved efficiency2 Sep 2025US 12,405,010 B2Suter Entfeuchtungstechnik AG
- Carbon-based oxygen-enriched combustion method for recirculation of flue gas from cement kiln24 Jun 2025US 12,339,062 B2Hangzhou Turning Energy Technology Development Co., Ltd.
- Process and device for improving of synthesis and/or flue gas velocity field for refuse derived fuel applications24 Dec 2024US 12,173,892 B2Grid Power AG
- Flue gas circulation system for improving combustion characteristics and thermal characteristics of pulverized coal fired boiler3 Sep 2026US 2026/0258941 A1Xi'an Thermal Power Research Institute Co., Ltd.
- Wood pellet patio heater12 Jun 2025US 2025/0189137 A1Patiofyre LLC
- System and method for treating coal-fired flue gas22 May 2025US 2025/0161864 A1Huaneng Clean Energy Research Institute
- Exhaust gas treatment device and small combustion installation equipped therewith27 Feb 2025US 2025/0065267 A1Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Gravity fed smoker30 Jan 2025US 2025/0031903 A1W. C. Bradley Company
Most cited
By later US patents
- Apparatus for cooking using wood pellets62US 7,900,553 B12011
- Combustible particulate fuel heater33US 4,565,184 A1986
- Pellet burning heating assembly27US 7,530,351 B22009
- Apparatus for producing combustible gases from carbonaceous materials23US 4,030,895 A1977
- Combustion device for stoves and fireplaces21US 5,113,843 AAlladin Steel Products · 1992