F23J 2900/13005
Protections for chimneys or flue tops against external factors
Official title: Protections for chimneys or flue tops against external factors, e.g. birds
F23J2900/13005 (Protections for chimneys or flue tops against external factors) appears on 38 US grants and 28 published applications in this corpus.
Search patents in F23J- Granted patents
- 38
- Published applications
- 28
- Assignees
- 23
- Inventors
- 71
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 1 |
| 2004 | 0 | 3 |
| 2005 | 3 | 3 |
| 2006 | 1 | 4 |
| 2007 | 1 | 2 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 2 | 1 |
| 2011 | 0 | 1 |
| 2012 | 2 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 3 |
| 2015 | 1 | 2 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 2 | 0 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Non-return valve for a flow channel through which a flow of air flows24 Feb 2026US 12,560,242 B2Skoberne GmbH
- Flue cap cover19 Apr 2022US 11,306,917 B2Roof Goose Vent LLC
- Vertical vent stack cap26 May 2020US 10,663,192 B2
- Exhaust adapter, exhaust structure for water heater, and method for installing exhaust adapter17 Sep 2019US 10,415,827 B2Noritz Corporation
- Exhaust adapter, exhaust structure for water heater, and method for installing exhaust adapter5 Jun 2018US 9,989,252 B2Noritz Corporation
- Chimney Cover21 May 2026US 2026/0139833 A1
- Non-return valve for a flow channel through which a flow of air flows14 Nov 2024US 2024/0376986 A1Skoberne GmbH
- Rain cap vent flue adapter25 Mar 2021US 2021/0088212 A1Air Distribution Technologies IP, LLC
- Flue cap cover3 Oct 2019US 2019/0301736 A1Roof Goose Vent LLC
- Exhaust adapter, exhaust structure for water heater, and method for installing exhaust adapter11 May 2017US 2017/0130960 A1Noritz Corporation
Most cited
By later US patents