F23D 2900/21003
For heating or re-burning air or gas in a duct
Official title: for heating or re-burning air or gas in a duct
F23D2900/21003 (For heating or re-burning air or gas in a duct) appears on 62 US grants and 57 published applications in this corpus.
Search patents in F23D- Granted patents
- 62
- Published applications
- 57
- Assignees
- 61
- Inventors
- 163
- Latest grant
- 31 May 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 3 | 3 |
| 2003 | 3 | 2 |
| 2004 | 2 | 3 |
| 2005 | 5 | 1 |
| 2006 | 0 | 2 |
| 2007 | 1 | 3 |
| 2008 | 0 | 5 |
| 2009 | 2 | 2 |
| 2010 | 2 | 6 |
| 2011 | 3 | 2 |
| 2012 | 2 | 3 |
| 2013 | 1 | 4 |
| 2014 | 3 | 2 |
| 2015 | 2 | 1 |
| 2016 | 3 | 5 |
| 2017 | 3 | 2 |
| 2018 | 2 | 0 |
| 2019 | 1 | 3 |
| 2020 | 1 | 1 |
| 2021 | 1 | 1 |
| 2022 | 2 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
| 2025 | 0 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Burner assembly and heat exchanger31 May 2022US 11,346,548 B2Souhel Khanania
- Method of controlling fuel injection in a reheat combustor for a combustor unit of a gas turbine8 Feb 2022US 11,242,806 B2Power Systems Mfg., LLC
- Gas burner for strong air flow2 Feb 2021US 10,907,825 B2Agrofrost, Naamloze Vennootschap
- Smoke removal device22 Dec 2020US 10,871,289 B2Grand Mate Co., Ltd.
- In-stream burner module13 Aug 2019US 10,378,441 B2Fives Pillard
- Hybrid duct device for heating an air flow16 Jul 2026US 2026/0202092 A1Fives Itas S.P.A.
- A gas heater assembly for a gas heating process and a system for a gas heating process12 Mar 2026US 2026/0071751 A1Luossavaara-Kiirunavaara AB
- Heating device, heating apparatus and apparatus for providing a flow of gaseous hydrogen18 Sep 2025US 2025/0290665 A1ROLLS-ROYCE plc
- Low nox emission burner and operating method for reducing nox formation applied to iron ore pellet sintering and/or enduring method16 May 2024US 2024/0159393 A1Fct Combustao Brasil Importacao E Exportacao Ltda
- Heating device17 Aug 2023US 2023/0258114 A1Friedrich Boysen GmbH & Co. KG
Most cited
By later US patents
- Fired heater73US 7,789,658 B2Uop LLC · 2010
- Combustion system for a heater38US 6,880,549 B2Topp Intellectual Properties, Inc. · 2005
- Exhaust system combustor33US 5,105,621 AParker-Hannifin Corporation · 1992
- Line burner assembly27US 5,131,836 AMaxon Corporation · 1992
- Hair drying apparatus24US 4,555,232 A1985