F25B 47/025
By reversing the cycle
Official title: {by reversing the cycle}
F25B47/025 (By reversing the cycle) appears on 292 US grants and 364 published applications in this corpus.
Search patents in F25B- Granted patents
- 292
- Published applications
- 364
- Assignees
- 124
- Inventors
- 834
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 6 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 1 |
| 2002 | 5 | 3 |
| 2003 | 2 | 3 |
| 2004 | 3 | 2 |
| 2005 | 1 | 3 |
| 2006 | 4 | 4 |
| 2007 | 1 | 4 |
| 2008 | 1 | 11 |
| 2009 | 1 | 3 |
| 2010 | 5 | 4 |
| 2011 | 2 | 10 |
| 2012 | 2 | 7 |
| 2013 | 4 | 13 |
| 2014 | 5 | 13 |
| 2015 | 2 | 23 |
| 2016 | 11 | 19 |
| 2017 | 18 | 19 |
| 2018 | 21 | 27 |
| 2019 | 24 | 32 |
| 2020 | 34 | 29 |
| 2021 | 24 | 19 |
| 2022 | 21 | 23 |
| 2023 | 14 | 26 |
| 2024 | 14 | 27 |
| 2025 | 20 | 23 |
| 2026 | 10 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Heat pump system15 Sep 2026US 12,736,259 B2The University Court of the University of Glasgow
- Method of varying defrost trigger for heat pump25 Aug 2026US 12,716,630 B2Carrier Corporation
- Heat pump system and control method thereof12 May 2026US 12,624,874 B2Carrier Corporation
- Open-walled, temperature controlled environment12 May 2026US 12,624,875 B2Kps Global LLC
- Methods and systems and apparatus to support reduced energy and water usage31 Mar 2026US 12,590,713 B2Octopus Energy Heating Limited
- Refrigeration cycle apparatus30 Jul 2026US 2026/0218956 A1Daikin Europe N.V.
- Refrigeration cycle device, and refrigeration cycle device control method23 Jul 2026US 2026/0210602 A1Fujitsu General Limited
- Refrigeration cycle apparatus2 Jul 2026US 2026/0185761 A1Daikin Industries, Ltd.
- Heat pump and fan coil unit with thermal energy storage and thermal expansion valve in flow conduits extending therebetween18 Jun 2026US 2026/0168707 A1Carrier Corporation
- Air conditioning system using heat pump and air heating device4 Jun 2026US 2026/0153244 A1Kyungdong Navien Co., Ltd.
Most cited
By later US patents
- Control device for refrigeration cycle89US 4,499,739 AMitsubishi Denki Kabushiki Kaisha · 1985
- Adaptive defrost system with ambient condition change detector89US 4,850,204 AParagon Electric Company, Inc. · 1989
- Heat pump with adaptive frost determination function78US 4,916,912 AHoneywell Inc. · 1990
- Heat pump with single exterior temperature sensor71US 4,910,966 AHoneywell Inc. · 1990
- Defrost control68US 5,257,506 ACarrier Corporation · 1993