F23L 11/00
Arrangements of valves or dampers after the fire
F23L11/00 (Arrangements of valves or dampers after the fire) appears on 180 US grants and 86 published applications in this corpus.
Search patents in F23L- Granted patents
- 180
- Published applications
- 86
- Assignees
- 79
- Inventors
- 247
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 5 | 0 |
| 1979 | 9 | 0 |
| 1980 | 10 | 0 |
| 1981 | 18 | 0 |
| 1982 | 7 | 0 |
| 1983 | 10 | 0 |
| 1984 | 5 | 0 |
| 1985 | 7 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 2 |
| 2003 | 3 | 2 |
| 2004 | 2 | 1 |
| 2005 | 1 | 2 |
| 2006 | 0 | 1 |
| 2007 | 0 | 4 |
| 2008 | 1 | 4 |
| 2009 | 2 | 7 |
| 2010 | 2 | 4 |
| 2011 | 1 | 6 |
| 2012 | 6 | 8 |
| 2013 | 6 | 2 |
| 2014 | 3 | 8 |
| 2015 | 2 | 3 |
| 2016 | 4 | 9 |
| 2017 | 4 | 5 |
| 2018 | 8 | 7 |
| 2019 | 8 | 3 |
| 2020 | 2 | 3 |
| 2021 | 1 | 1 |
| 2022 | 3 | 0 |
| 2023 | 0 | 2 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Non-return valve for a flow channel through which a flow of air flows24 Feb 2026US 12,560,242 B2Skoberne GmbH
- Gas furnace13 Sep 2022US 11,441,785 B2LG Electronics Inc.
- Grill apparatus and firebox assembly for use in a grill5 Apr 2022US 11,291,334 B2NewAge Products, Inc.
- Vent proving system1 Mar 2022US 11,262,102 B2Field Controls, LLC
- System and method to reduce standby energy loss in a gas burning appliance and components for use therewith13 Apr 2021US 10,976,075 B2Invensys Controls Australia Pty Ltd.
- Flexible anti-backflow damper for a fireplace system19 Feb 2026US 2026/0049715 A1HNI Technologies Inc.
- Non-return valve for a flow channel through which a flow of air flows14 Nov 2024US 2024/0376986 A1Skoberne GmbH
- Reactor System for Producing and/or Treating Particles in an Oscillating Process Gas Flow21 Sep 2023US 2023/0294067 A1Glatt Ingenieurtechnik GmbH
- Flue systems for fuel burning devices6 Jul 2023US 2023/0213188 A1Rheem Manufacturing Company
- Grill apparatus and firebox assembly for use in a grill29 Jul 2021US 2021/0228026 A1NewAge Products, Inc.
Most cited
By later US patents
- Air pollution control apparatus and air pollution control method127US 8,202,354 B2Mitsubishi Heavy Industries, Ltd. · 2012
- Stove pipe thermoelectric generator51US 6,053,163 AHi-Z Technology, Inc. · 2000
- Chimney by-pass39US 4,821,473 A1989
- Method and apparatus for powered flue products exhaust and preheated combustion air supply37US 4,262,608 A1981
- Dampers with leaf spring seals37US 4,823,836 A1989