F23L 1/00
Passages or apertures for delivering primary air for combustion
Official title: Passages or apertures for delivering primary air for combustion (baffles or deflectors in air inlets F23M9/02)
F23L1/00 (Passages or apertures for delivering primary air for combustion) appears on 224 US grants and 171 published applications in this corpus.
Search patents in F23L- Granted patents
- 224
- Published applications
- 171
- Assignees
- 144
- Inventors
- 423
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 14 | 0 |
| 1985 | 10 | 0 |
| 1986 | 9 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 6 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 8 | 0 |
| 2001 | 6 | 2 |
| 2002 | 4 | 2 |
| 2003 | 5 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 5 |
| 2006 | 3 | 1 |
| 2007 | 0 | 8 |
| 2008 | 3 | 4 |
| 2009 | 1 | 9 |
| 2010 | 1 | 7 |
| 2011 | 4 | 8 |
| 2012 | 2 | 2 |
| 2013 | 4 | 6 |
| 2014 | 2 | 5 |
| 2015 | 3 | 8 |
| 2016 | 2 | 7 |
| 2017 | 4 | 8 |
| 2018 | 3 | 7 |
| 2019 | 13 | 10 |
| 2020 | 8 | 15 |
| 2021 | 10 | 12 |
| 2022 | 11 | 18 |
| 2023 | 9 | 13 |
| 2024 | 12 | 6 |
| 2025 | 8 | 4 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Adjustable burner nozzle for multiple fuels5 May 2026US 12,618,555 B2Honeywell International Inc.
- Radiant tube burner, radiant tube, and method of designing radiant tube burner14 Apr 2026US 12,601,476 B2Jfe Steel Corporation
- Burner with gas turbine for producing a flame for a heat generation system16 Dec 2025US 12,498,116 B2C.I.B. Unigas S.P.A.
- Flare bonnet2 Dec 2025US 12,486,978 B1Vorti-Tek International, LLC
- Biomass burner and corresponding biomass combustion method11 Nov 2025US 12,467,621 B2Blucomb S.R.L.
- Solid Fuel Combustion Apparatus and Method18 Jun 2026US 2026/0168667 A1Air Products and Chemicals, Inc.
- Specialized air distribution system and air distribution method for a waste incinerator with sludge co-incineration19 Mar 2026US 2026/0078901 A1Guangdong University of Technology
- Fire pit with fire grate22 May 2025US 2025/0164111 A1Solo Brands, LLC
- Combustion chamber wall and combustion chamber assembly for a heating device in a vehicle and process for their production15 May 2025US 2025/0155120 A1
- Gravity fed smoker30 Jan 2025US 2025/0031903 A1W. C. Bradley Company
Most cited
By later US patents
- Pellet fuel burning device104US 6,223,737 B12001
- Pressurized combustion and heat transfer process and apparatus58US 6,651,645 B12003
- Ignition inhibiting gas water heater49US 5,797,355 ASRP 687 Pty. Ltd. · 1998
- Incinerator with two reburn stages, and, optionally, heat recovery23US 4,438,705 A1984
- Burning apparatus with means for heating and cleaning polluted products of combustion23US 4,724,776 A1988