F24F 11/77
By controlling the speed of ventilators
Official title: by controlling the speed of ventilators
F24F11/77 (By controlling the speed of ventilators) appears on 1,488 US grants and 1,754 published applications in this corpus.
Search patents in F24F- Granted patents
- 1,488
- Published applications
- 1,754
- Assignees
- 581
- Inventors
- 3,392
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 6 | 0 |
| 1990 | 7 | 0 |
| 1991 | 8 | 0 |
| 1992 | 10 | 0 |
| 1993 | 11 | 0 |
| 1994 | 16 | 0 |
| 1995 | 22 | 0 |
| 1996 | 23 | 0 |
| 1997 | 18 | 0 |
| 1998 | 25 | 0 |
| 1999 | 14 | 0 |
| 2000 | 10 | 0 |
| 2001 | 17 | 1 |
| 2002 | 16 | 11 |
| 2003 | 11 | 20 |
| 2004 | 15 | 30 |
| 2005 | 12 | 32 |
| 2006 | 15 | 33 |
| 2007 | 20 | 41 |
| 2008 | 14 | 39 |
| 2009 | 15 | 45 |
| 2010 | 21 | 55 |
| 2011 | 29 | 49 |
| 2012 | 32 | 68 |
| 2013 | 35 | 53 |
| 2014 | 50 | 75 |
| 2015 | 45 | 102 |
| 2016 | 48 | 104 |
| 2017 | 92 | 145 |
| 2018 | 88 | 93 |
| 2019 | 124 | 86 |
| 2020 | 96 | 97 |
| 2021 | 91 | 114 |
| 2022 | 97 | 113 |
| 2023 | 87 | 119 |
| 2024 | 91 | 94 |
| 2025 | 83 | 82 |
| 2026 | 37 | 53 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
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