F23L 9/06
Passages or apertures for delivering secondary air for completing combustion of fuel
Official title: by discharging the air into the fire bed
F23L9/06 (Passages or apertures for delivering secondary air for completing combustion of fuel) appears on 31 US grants and 36 published applications in this corpus.
Search patents in F23L- Granted patents
- 31
- Published applications
- 36
- Assignees
- 34
- Inventors
- 83
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 1 |
| 2011 | 1 | 2 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 1 | 2 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 3 | 3 |
| 2019 | 2 | 1 |
| 2020 | 2 | 2 |
| 2021 | 1 | 5 |
| 2022 | 3 | 2 |
| 2023 | 1 | 3 |
| 2024 | 1 | 4 |
| 2025 | 0 | 2 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Furnace30 Jun 2026US 12,669,266 B2Fire Chief Industries LLC
- Radiant tube burner, radiant tube, and method of designing radiant tube burner14 Apr 2026US 12,601,476 B2Jfe Steel Corporation
- Burner and method for transient heating6 Jan 2026US 12,516,809 B2Air Products and Chemicals, Inc.
- Furnace6 Feb 2024US 11,892,200 B2Fire Chief Industries LLC
- Controlled secondary air supply range burner27 Jun 2023US 11,686,472 B2Gas Technology Institute
- Air supply systems for combustion of granular biomass fuels15 Jan 2026US 2026/0016165 A1Aprovecho Research Center
- Gravity fed smoker30 Jan 2025US 2025/0031903 A1W. C. Bradley Company
- Gas burner, gas burner arrangement and gas stove2 Jan 2025US 2025/0003584 A1BSH Hausgeräte GmbH
- Combustion apparatus, combustion system, and combustion method5 Dec 2024US 2024/0401799 A1Combustion Consulting Italy S.R.L.
- Ultra low nox burner30 May 2024US 2024/0175576 A1MME Engineering E.U.
Most cited
By later US patents
- Pellet fuel burning device104US 6,223,737 B12001
- Method and apparatus for improving fluid flow and gas mixing in boilers20US 5,121,700 ASandwell and Company Limited · 1992
- Incinerator10US 6,976,439 B2Sanyo Industries, Ltd. · 2005
- High efficiency solid fuel burning stove with optimized burning conditions and low level of emission8US 10,041,682 B1University of Maryland · 2018
- System and method for a pellet-fired smoker5US 11,109,600 B22021