F24H 9/0031
With means for changing or adapting the path of the flue gas
Official title: {with means for changing or adapting the path of the flue gas}
F24H9/0031 (With means for changing or adapting the path of the flue gas) appears on 57 US grants and 72 published applications in this corpus.
Search patents in F24H- Granted patents
- 57
- Published applications
- 72
- Assignees
- 37
- Inventors
- 111
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 4 |
| 2013 | 0 | 1 |
| 2014 | 2 | 3 |
| 2015 | 0 | 0 |
| 2016 | 3 | 5 |
| 2017 | 3 | 10 |
| 2018 | 4 | 5 |
| 2019 | 7 | 3 |
| 2020 | 3 | 5 |
| 2021 | 6 | 5 |
| 2022 | 4 | 10 |
| 2023 | 6 | 6 |
| 2024 | 6 | 6 |
| 2025 | 6 | 1 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Biomass-fueled furnace17US 4,559,882 A1985
- Water heater with multiple heat exchanging stacks12US 8,807,093 B2Bock Water Heaters, Inc. · 2014
- Process and apparatus for ducting flue gas within a boiler11US 4,291,649 APPT Pyrolyse-und Prozessanlagentechnik GmbH & Co. · 1981
- Boiler tube structure11US 4,993,368 AArmada Investment Group Inc. · 1991
- Condensing combustion apparatus8US 10,823,455 B2Kyungdong Navien Co., Ltd. · 2020