F24F 11/54
Using one central controller connected to several sub-controllers
Official title: using one central controller connected to several sub-controllers
F24F11/54 (Using one central controller connected to several sub-controllers) appears on 715 US grants and 840 published applications in this corpus.
Search patents in F24F- Granted patents
- 715
- Published applications
- 840
- Assignees
- 216
- Inventors
- 1,566
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 4 | 0 |
| 1995 | 6 | 0 |
| 1996 | 12 | 0 |
| 1997 | 9 | 0 |
| 1998 | 6 | 0 |
| 1999 | 6 | 0 |
| 2000 | 6 | 0 |
| 2001 | 4 | 5 |
| 2002 | 12 | 8 |
| 2003 | 9 | 11 |
| 2004 | 5 | 18 |
| 2005 | 7 | 24 |
| 2006 | 10 | 17 |
| 2007 | 10 | 18 |
| 2008 | 9 | 30 |
| 2009 | 7 | 22 |
| 2010 | 26 | 33 |
| 2011 | 15 | 23 |
| 2012 | 14 | 20 |
| 2013 | 20 | 22 |
| 2014 | 21 | 28 |
| 2015 | 23 | 47 |
| 2016 | 21 | 34 |
| 2017 | 28 | 36 |
| 2018 | 37 | 48 |
| 2019 | 42 | 61 |
| 2020 | 57 | 68 |
| 2021 | 52 | 76 |
| 2022 | 63 | 46 |
| 2023 | 52 | 47 |
| 2024 | 44 | 49 |
| 2025 | 37 | 35 |
| 2026 | 24 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Diagnostic system for use in an environment control network306US 5,446,677 AJohnson Service Company · 1995
- Wireless communication system for air distribution system257US 5,390,206 AAmerican Standard Inc. · 1995
- Energy management system256US 5,682,949 AGlobalmic, Inc. · 1997
- Method and apparatus for graphical display of a condition in a building system with a mobile display unit249US 7,548,833 B2Siemens Building Technologies, Inc. · 2009
- Direct digital control apparatus for automated monitoring and control of building systems226US 4,497,031 AJohnson Service Company · 1985