F24S 40/70
Preventing freezing
Official title: Preventing freezing (arrangements for draining the working fluid F24S40/60)
F24S40/70 (Preventing freezing) appears on 65 US grants and 33 published applications in this corpus.
Search patents in F24S- Granted patents
- 65
- Published applications
- 33
- Assignees
- 41
- Inventors
- 126
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 9 | 0 |
| 1982 | 7 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 8 |
| 2011 | 0 | 2 |
| 2012 | 1 | 2 |
| 2013 | 2 | 2 |
| 2014 | 2 | 4 |
| 2015 | 2 | 0 |
| 2016 | 3 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 3 |
| 2020 | 3 | 0 |
| 2021 | 0 | 2 |
| 2022 | 1 | 3 |
| 2023 | 1 | 1 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Directing light for thermal and power applications in space2 Sep 2025US 12,404,042 B2Trans Astronautica Corporation
- Pump system10 Sep 2024US 12,085,287 B2Grundfos Holding A/S
- Directing light for thermal and power applications in space21 Mar 2023US 11,608,196 B2Trans Astronautica Corporation
- Hardened solar energy collector system2 Aug 2022US 11,402,131 B1Advanced Fusion Systems LLC
- Freeze prevention valve3 Nov 2020US 10,823,304 B2Triteck Limited
- Directing light for thermal and power applications in space30 Jul 2026US 2026/0217388 A1Trans Astronautica Corporation
- Directing light for thermal and power applications in space10 Aug 2023US 2023/0249848 A1Trans Astronautica Corporation
- Hardened solar energy collector system21 Jul 2022US 2022/0228777 A1Advanced Fusion Systems LLC
- Directing light for thermal and power applications in space24 Mar 2022US 2022/0089302 A1Trans Astronautica Corporation
- Directing light for thermal and power applications in space27 Jan 2022US 2022/0024612 A1Trans Astronautica Corporation
Most cited
By later US patents
- Freeze protection apparatus for fluid transport passages47US 6,119,729 AArise Technologies Corporation · 2000
- Heat pump system26US 4,352,272 A1982
- Vent/vacuum breaker float valve assembly24US 4,230,142 ARichdel, Inc. · 1980
- Sun tracking solar energy boiler23US 4,213,303 A1980
- Solar water heating system21US 3,989,032 AHalm Instrument Co., Inc. · 1976