F23L 2900/15043
Preheating combustion air by heat recovery means located in the chimney
Official title: Preheating combustion air by heat recovery means located in the chimney, e.g. for home heating devices
F23L2900/15043 (Preheating combustion air by heat recovery means located in the chimney) appears on 27 US grants and 29 published applications in this corpus.
Search patents in F23L- Granted patents
- 27
- Published applications
- 29
- Assignees
- 29
- Inventors
- 73
- Latest grant
- 29 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 4 |
| 2003 | 2 | 3 |
| 2004 | 2 | 3 |
| 2005 | 3 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 2 |
| 2016 | 1 | 0 |
| 2017 | 1 | 0 |
| 2018 | 1 | 1 |
| 2019 | 1 | 2 |
| 2020 | 1 | 0 |
| 2021 | 2 | 2 |
| 2022 | 1 | 2 |
| 2023 | 0 | 1 |
| 2024 | 1 | 1 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Temperature control system for an air preheater installation29 Apr 2025US 12,287,092 B2Arvos Ljungstrom LLC
- Water heater receiving humidified air4 Mar 2025US 12,241,654 B2Kyungdong Navien Co., Ltd.
- Method and system for improving boiler effectiveness27 Aug 2024US 12,072,096 B2Arvos Ljungstrom LLC
- Radiant tube recuperative burner assembly12 Apr 2022US 11,300,289 B2ESA, Inc.
- Method and system for improving boiler effectiveness23 Mar 2021US 10,955,136 B2Arvos Ljunstrom LLC
- Heater with remote combustion air addition23 Jan 2025US 2025/0027643 A1Lummus Technology Inc.
- A Temperature Control System for an Air Preheater Installation4 Jan 2024US 2024/0003542 A1Arvos Ljungstrom LLC
- Water heater receiving humidified air4 May 2023US 2023/0139832 A1Kyungdong Navien Co., Ltd.
- High-temperature fluid transporting pipeline with pipeline casing formed by heat exchange apparatus, suitable heat exchange apparatus and heat exchange method30 Jun 2022US 2022/0205734 A1L'Air Liquide, Société Anonyme pour I'Etude et I' Exploitation de Procédés Georges Claude
- Radiant tube recuperative burner assembly10 Feb 2022US 2022/0042678 A1ESA, Inc.
Most cited
By later US patents
- Oxidant control in co-generation installations151US 6,247,315 B1American Air Liquids, Inc. · 2001
- Ambient pressure gas turbine system96US 6,298,654 B12001
- Treatment of oil field wastes69US 4,751,887 AEnvironmental Pyrogenics Services, Inc. · 1988
- Systems and methods for controlling air distribution in a coke oven57US 9,273,249 B2Suncoke Technology and Development LLC · 2016
- Staged air, low NOX burner with internal recuperative flue gas recirculation53US 5,413,477 AGas Research Institute · 1995