F24S 40/00
Safety or protection arrangements of solar heat collectors
Official title: Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors (control arrangements F24S50/00)
F24S40/00 (Safety or protection arrangements of solar heat collectors) appears on 1,292 US grants and 1,488 published applications in this corpus.
Search patents in F24S- Granted patents
- 1,292
- Published applications
- 1,488
- Assignees
- 783
- Inventors
- 2,747
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 17 | 0 |
| 1978 | 30 | 0 |
| 1979 | 33 | 0 |
| 1980 | 32 | 0 |
| 1981 | 36 | 0 |
| 1982 | 31 | 0 |
| 1983 | 20 | 0 |
| 1984 | 25 | 0 |
| 1985 | 27 | 0 |
| 1986 | 13 | 0 |
| 1987 | 16 | 0 |
| 1988 | 2 | 0 |
| 1989 | 6 | 0 |
| 1990 | 9 | 0 |
| 1991 | 7 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 8 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 8 | 0 |
| 2001 | 2 | 0 |
| 2002 | 6 | 7 |
| 2003 | 5 | 11 |
| 2004 | 8 | 21 |
| 2005 | 8 | 15 |
| 2006 | 7 | 14 |
| 2007 | 7 | 33 |
| 2008 | 7 | 35 |
| 2009 | 12 | 49 |
| 2010 | 17 | 95 |
| 2011 | 24 | 116 |
| 2012 | 27 | 101 |
| 2013 | 57 | 134 |
| 2014 | 75 | 130 |
| 2015 | 92 | 102 |
| 2016 | 79 | 67 |
| 2017 | 55 | 82 |
| 2018 | 69 | 55 |
| 2019 | 57 | 61 |
| 2020 | 50 | 59 |
| 2021 | 51 | 56 |
| 2022 | 31 | 57 |
| 2023 | 49 | 64 |
| 2024 | 60 | 57 |
| 2025 | 47 | 45 |
| 2026 | 23 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F24S 40/80Accommodating differential expansion of solar collector elements341
- F24S 40/50Preventing overheating or overpressure287
- F24S 40/20Cleaning265
- F24S 40/40Preventing corrosion214
- F24S 40/10Protective covers or shrouds130
- F24S 40/70Preventing freezing65
- F24S 40/60Arrangements for draining the working fluid56
- F24S 40/90Arrangements for testing solar heat collectors41
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Most cited
By later US patents
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- Photovoltaic module and a photovoltaic apparatus243US 5,571,338 ASanyo Electric Co., Ltd. · 1996
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