F25B 2313/0211
The auxiliary heat exchanger being only used during defrosting
Official title: the auxiliary heat exchanger being only used during defrosting
F25B2313/0211 (The auxiliary heat exchanger being only used during defrosting) appears on 14 US grants and 13 published applications in this corpus.
Search patents in F25B- Granted patents
- 14
- Published applications
- 13
- Assignees
- 13
- Inventors
- 51
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 2 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 2 |
| 2015 | 0 | 0 |
| 2016 | 2 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 1 |
| 2024 | 1 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Outdoor unit for a heat pump5 May 2022US 2022/0136750 A1Daikin Europe N.V.
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Most cited
By later US patents
- Heat pump system24US 5,105,629 A1992
- Defrost subcircuit for air-to-air heat pump24US 5,983,660 AGeofurnace Systems, Inc. · 1999
- Air-conditioning apparatus19US 5,878,810 AKabushiki Kaisha Toshiba · 1999
- Transport refrigeration system13US 4,353,221 AThermo King Corporation · 1982
- Boosted air source heat pump11US 6,931,871 B2Shaw Engineering Associates, LLC · 2005