F25B 2347/021
Alternate defrosting
F25B2347/021 (Alternate defrosting) appears on 77 US grants and 72 published applications in this corpus.
Search patents in F25B- Granted patents
- 77
- Published applications
- 72
- Assignees
- 42
- Inventors
- 179
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 3 |
| 2006 | 1 | 4 |
| 2007 | 2 | 4 |
| 2008 | 1 | 0 |
| 2009 | 0 | 4 |
| 2010 | 0 | 2 |
| 2011 | 1 | 4 |
| 2012 | 0 | 2 |
| 2013 | 2 | 1 |
| 2014 | 1 | 2 |
| 2015 | 2 | 2 |
| 2016 | 5 | 0 |
| 2017 | 0 | 7 |
| 2018 | 2 | 3 |
| 2019 | 5 | 3 |
| 2020 | 4 | 8 |
| 2021 | 6 | 7 |
| 2022 | 2 | 1 |
| 2023 | 4 | 7 |
| 2024 | 6 | 4 |
| 2025 | 4 | 2 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air-to-water heat pump system with defrosting unit and method of optimizing the operation of the air-to-water heat pump21 Apr 2026US 12,607,393 B2
- Refrigerator12 Aug 2025US 12,385,682 B2LG Electronics Inc.
- Air conditioner with defrosting operation and method for controlling the same8 Jul 2025US 12,352,480 B2Samsung Electronics Co., Ltd.
- Air-conditioning apparatus with defrost bypass circuit28 Jan 2025US 12,209,761 B2Mitsubishi Electric Corporation
- Hot gas defrost using fluid from high pressure tank21 Jan 2025US 12,203,693 B2Heatcraft Refrigeration Products LLC
- Cooling storage, method for controlling cooling storage, and cooling storage management system27 Aug 2026US 2026/0248302 A1Panasonic Intellectual Property Management Co., Ltd.
- Quick co2 warm liquid defrost with additional heat23 Jul 2026US 2026/0210601 A1Heatcraft Refrigeration Products LLC
- Device having a heat exchanger and method for operating a heat exchanger of a device25 Sep 2025US 2025/0297754 A1Guntner GmbH & Co. KG
- Methods for Defrosting a Heat Pump and Heat Pumps Comprising a Defrost System2 Jan 2025US 2025/0003658 A1
- Air-to-water heat pump system with defrosting unit and method of optimizing the operation of the air-to-water heat pump29 Aug 2024US 2024/0288208 A1
Most cited
By later US patents
- Refrigerated container63US 5,187,945 AReefco Manufacturing Corporation · 1993
- Refrigerated display case37US 4,633,677 ASanden Corporation · 1987
- Frosting heat-pump dehumidifier with improved defrost36US 6,021,644 A2000
- Refrigerated merchandiser with modular evaporator coils and "no defrost" product area30US 5,924,297 AHussmann Corporation · 1999
- Control device for refrigerated display case29US 4,691,527 ASanden Corporation · 1987