F24F 11/35
By closing air passages
Official title: by closing air passages
F24F11/35 (By closing air passages) appears on 123 US grants and 87 published applications in this corpus.
Search patents in F24F- Granted patents
- 123
- Published applications
- 87
- Assignees
- 67
- Inventors
- 171
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 2 |
| 2003 | 0 | 0 |
| 2004 | 0 | 6 |
| 2005 | 0 | 1 |
| 2006 | 2 | 1 |
| 2007 | 3 | 2 |
| 2008 | 2 | 6 |
| 2009 | 1 | 2 |
| 2010 | 0 | 1 |
| 2011 | 2 | 3 |
| 2012 | 0 | 6 |
| 2013 | 0 | 2 |
| 2014 | 1 | 5 |
| 2015 | 5 | 2 |
| 2016 | 6 | 4 |
| 2017 | 5 | 4 |
| 2018 | 2 | 4 |
| 2019 | 12 | 5 |
| 2020 | 3 | 5 |
| 2021 | 6 | 4 |
| 2022 | 5 | 6 |
| 2023 | 4 | 4 |
| 2024 | 4 | 5 |
| 2025 | 4 | 4 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ember and flame resistant resettable automatic soffit vent28 Jul 2026US 12,692,706 B2Bmic LLC
- Smart vent system for localized air quality control10 Mar 2026US 12,571,558 B2Tyco Fire & Security GmbH
- System and method of a ring architecture of a fixed piping system implemented within a safety system of a structure to continuously supply breathable air therewithin10 Feb 2026US 12,544,601 B2Rescue Air Systems, Inc.
- Actuator for a damper and method thereof25 Nov 2025US 12,480,681 B2Siemens Industry, Inc.
- Systems and methods for energy savings in buildings19 Aug 2025US 12,392,517 B2Mechoshade Systems, LLC
- Air Register Assembly For Restricting Airflow During Thermal Event28 May 2026US 2026/0146763 A1Remik Innovations LLC
- System and method of a ring architecture of a fixed piping system implemented within a safety system of a structure to continuously supply breathable air therewithin14 May 2026US 2026/0131173 A1Rescue Air Systems, Inc.
- Systems and methods for energy savings in buildings6 Nov 2025US 2025/0341327 A1Mechoshade Systems, LLC
- Ember and flame resistant resettable automatic soffit vent27 Feb 2025US 2025/0067055 A1Bmic LLC
- Smart vent system for localized air quality control6 Feb 2025US 2025/0043983 A1Tyco Fire & Security GmbH
Most cited
By later US patents
- Self-closing vent93US 7,191,845 B22007
- Air flow control system86US 4,977,818 A1990
- Fire rated floor door and control system70US 5,554,433 AThe Bilco Company · 1996
- Self-closing vent assembly70US 7,413,024 B1Vulcan Fire Technologies, Inc. · 2008
- Magnetically actuated auto-closing air vent55US 8,062,108 B22011