F23D 14/22
With separate air and gas feed ducts
Official title: with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
F23D14/22 (With separate air and gas feed ducts) appears on 801 US grants and 749 published applications in this corpus.
Search patents in F23D- Granted patents
- 801
- Published applications
- 749
- Assignees
- 464
- Inventors
- 1,952
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 6 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 6 | 0 |
| 1983 | 6 | 0 |
| 1984 | 10 | 0 |
| 1985 | 13 | 0 |
| 1986 | 4 | 0 |
| 1987 | 9 | 0 |
| 1988 | 8 | 0 |
| 1989 | 7 | 0 |
| 1990 | 15 | 0 |
| 1991 | 11 | 0 |
| 1992 | 8 | 0 |
| 1993 | 10 | 0 |
| 1994 | 14 | 0 |
| 1995 | 23 | 0 |
| 1996 | 27 | 0 |
| 1997 | 19 | 0 |
| 1998 | 21 | 0 |
| 1999 | 26 | 0 |
| 2000 | 29 | 0 |
| 2001 | 24 | 2 |
| 2002 | 17 | 17 |
| 2003 | 15 | 21 |
| 2004 | 17 | 16 |
| 2005 | 13 | 12 |
| 2006 | 5 | 11 |
| 2007 | 9 | 24 |
| 2008 | 6 | 18 |
| 2009 | 8 | 19 |
| 2010 | 9 | 38 |
| 2011 | 9 | 22 |
| 2012 | 13 | 22 |
| 2013 | 18 | 25 |
| 2014 | 20 | 34 |
| 2015 | 21 | 35 |
| 2016 | 27 | 36 |
| 2017 | 28 | 40 |
| 2018 | 25 | 42 |
| 2019 | 38 | 46 |
| 2020 | 37 | 39 |
| 2021 | 32 | 32 |
| 2022 | 29 | 40 |
| 2023 | 24 | 36 |
| 2024 | 24 | 50 |
| 2025 | 27 | 46 |
| 2026 | 28 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Burner and method for hydrogen combustion with enhanced luminosity6 Oct 2026US 12,753,918 B2Bloom Engineering Company, Inc.
- Methods and systems for mixing fluids22 Sep 2026US 12,742,545 B2Ekona Power Inc.
- Burner for fuel combustion and combustion method therefor1 Sep 2026US 12,723,753 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Process burner with distal flame holder25 Aug 2026US 12,716,582 B2
- Method and apparatus for regulating a flame length in a partial oxidation reactor11 Aug 2026US 12,704,258 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Hydrogen gas burner10 Sep 2026US 2026/0266459 A1Amf Den Boer B.V.
- Burner module3 Sep 2026US 2026/0258944 A1Kawasaki Jukogyo Kabushiki Kaisha
- Method and device for treating and neutralising environmentally harmful and/or toxic exhaust gases3 Sep 2026US 2026/0258946 A1Pfeiffer Fab Solutions GmbH
- Reforming device27 Aug 2026US 2026/0249266 A1Kabushiki Kaisha Toyota Jidoshokki
- Burner assembly for gaseous fuels27 Aug 2026US 2026/0251296 A1Clearsign Technologies Corporation
Most cited
By later US patents
- Rapid injection process and apparatus for producing synthesis gas (law 560)173US 5,886,056 AExxon Research & Engineering Co. · 1999
- Oxygen-gas fuel burner and glass forehearth containing the oxygen-gas fuel burner130US 5,814,121 AThe BOC Group, Inc. · 1998
- Gas turbine engine carburetor125US 4,653,278 AGeneral Electric Company · 1987
- Oxy-fuel burner having coaxial fuel and oxidant outlets123US 5,743,723 AAmerican Air Liquide, Inc. · 1998
- Low NO.sub.x gas burner apparatus and methods121US 5,238,395 AJohn Zink Company · 1993