F23B 7/002
Combustion techniques: characterised by gas flow arrangements
Official title: {characterised by gas flow arrangements}
F23B7/002 (Combustion techniques: characterised by gas flow arrangements) appears on 67 US grants and 48 published applications in this corpus.
Search patents in F23B- Granted patents
- 67
- Published applications
- 48
- Assignees
- 42
- Inventors
- 135
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 3 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 2 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 2 |
| 2017 | 0 | 2 |
| 2018 | 1 | 3 |
| 2019 | 4 | 3 |
| 2020 | 3 | 7 |
| 2021 | 4 | 5 |
| 2022 | 3 | 7 |
| 2023 | 4 | 6 |
| 2024 | 2 | 2 |
| 2025 | 3 | 1 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fluidized bed reactor system and a method of operating a fluidized bed reactor system14 Apr 2026US 12,601,475 B2Sumitomo SHI FW Energia Oy
- Electronic closed-loop control device for fireplaces comprising a lower combustion system31 Mar 2026US 12,590,703 B2Maxitrol Company
- Combustion system comprising an annular shroud burner15 Jul 2025US 12,359,807 B2Jupiter Oxygen Corporation
- Control method for a system having reduced nitrogen oxide emissions and for use in a carbon negative emission method20 May 2025US 12,305,121 B2Zhejiang University
- Smoker13 May 2025US 12,295,379 B2Middleton Mixology LLC
- Electronic closed-loop control device for fireplaces comprising a lower combustion system23 Jul 2026US 2026/0210553 A1Maxitrol Company
- Solid Fuel Combustion Apparatus and Method18 Jun 2026US 2026/0168667 A1Air Products and Chemicals, Inc.
- Combustion system comprising an annular shroud burner5 Feb 2026US 2026/0036299 A1Jupiter Oxygen Corporation
- Boiler device and organic waste treatment device provided with same2 Oct 2025US 2025/0305676 A1Shimose Microbes Laboratory Corporation
- Electronic closed-loop control device for fireplaces comprising a lower combustion system5 Sep 2024US 2024/0295324 A1Maxitrol Company
Most cited
By later US patents
- Solid refuse furnace42US 4,213,404 AEnergy Alternatives, Inc. · 1980
- Self-powered automatic secondary air controllers for woodstoves and small furnaces36US 5,014,680 AThe United States of America as represented by the United States Department of Energy · 1991
- Powered downdraft gasifier33US 4,463,687 AE. K. Industries, Inc. · 1984
- Solid fuel burner32US 4,167,909 A1979
- Recirculating furnace-dryer combination25US 4,017,254 A1977