F25D 21/125
The hot fluid being ambient air
Official title: {the hot fluid being ambient air}
F25D21/125 (The hot fluid being ambient air) appears on 98 US grants and 48 published applications in this corpus.
Search patents in F25D- Granted patents
- 98
- Published applications
- 48
- Assignees
- 28
- Inventors
- 114
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 11 | 0 |
| 1982 | 15 | 0 |
| 1983 | 10 | 0 |
| 1984 | 7 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 3 |
| 2004 | 0 | 0 |
| 2005 | 3 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 2 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 4 |
| 2016 | 1 | 5 |
| 2017 | 3 | 3 |
| 2018 | 3 | 7 |
| 2019 | 4 | 4 |
| 2020 | 6 | 3 |
| 2021 | 0 | 1 |
| 2022 | 7 | 3 |
| 2023 | 2 | 5 |
| 2024 | 3 | 1 |
| 2025 | 2 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Refrigeration door system and door assembly with defrosting and related methods8 Sep 2026US 12,729,900 B2
- Method for explosion-proof thawing of means of transport or means of traction transporting in particular bulk material18 Feb 2025US 12,228,327 B2Awas Fee GmbH
- Hot gas defrost using fluid from high pressure tank21 Jan 2025US 12,203,693 B2Heatcraft Refrigeration Products LLC
- Hot gas defrost using low temperature compressor discharge gas and auxiliary flash tank11 Jun 2024US 12,007,159 B2Heatcraft Refrigeration Products LLC
- Refrigeration door system and door assembly with defrosting and related methods20 Feb 2024US 11,906,235 B2
- Refrigeration door system and door assembly with defrosting and related methods6 Jun 2024US 2024/0183605 A1
- Hot gas defrost system using hot gas from low temperature compressor21 Dec 2023US 2023/0408166 A1Heatcraft Refrigeration Products LLC
- Hot gas defrost using low temperature compressor discharge gas and auxiliary flash tank21 Dec 2023US 2023/0408167 A1Heatcraft Refrigeration Products LLC
- Hot gas defrost using fluid from high pressure tank21 Dec 2023US 2023/0408168 A1Heatcraft Refrigeration Products LLC
- Refrigeration door system and door assembly with defrosting and related methods28 Sep 2023US 2023/0304725 A1
Most cited
By later US patents
- Control system for an aircraft galley cooler66US 6,845,627 B1BE Intellectual Property, Inc. · 2005
- Low temperature display merchandiser57US 5,357,767 AHussmann Corporation · 1994
- Air defrost display case43US 3,937,033 AKysor Industrial Corporation · 1976
- Energy conserving refrigerated merchandiser display case41US 4,299,092 ATyler Refrigeration Corporation · 1981
- Wide island air defrost refrigerated display case having a defrost-only center passage40US 4,483,153 AEmhart Industries, Inc. · 1984