F28B 9/005
Auxiliary systems, arrangements, or devices: for protection against freezing
Official title: {for protection against freezing}
F28B9/005 (Auxiliary systems, arrangements, or devices: for protection against freezing) appears on 19 US grants and 7 published applications in this corpus.
Search patents in F28B- Granted patents
- 19
- Published applications
- 7
- Assignees
- 13
- Inventors
- 33
- Latest grant
- 30 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 3 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Packing sheet, packing module and cooling tower30 Sep 2025US 12,429,294 B2Shandong Beno Cooling Equipment Co., Ltd.
- Heat exchanger and refrigeration cycle apparatus12 Jul 2022US 11,384,996 B2Mitsubishi Electric Corporation
- Unitary heat pump air conditioner having a heat exchanger with an integral receiver and sub-cooler19 Jan 2016US 9,239,193 B2Delphi Technologies, Inc.
- Condensor coil wind guard and method of assembly20 May 2014US 8,726,954 B2
- Air ejector vacuum control valve8 Jul 2003US 6,588,499 B1PacifiCorp
- Packing sheet, packing module and cooling tower26 Mar 2026US 2026/0085900 A1Shandong Beno Cooling Equipment Co., Ltd.
- Packing sheet, packing module and cooling tower29 Sep 2022US 2022/0307780 A1Shandong Beno Cooling Equiment Co., Ltd.
- Heat Exchanger and Refrigeration Cycle Apparatus13 Aug 2020US 2020/0256626 A1Mitsubishi Electric Corporation
- Freezing protection system of heat exchanger and method for controlling the same1 Nov 2012US 2012/0273184 A1Sung Ji Air-Conditioning Technology Co., Ltd.
- Unitary heat pump air conditioner having a heat exchanger with an integral receiver and sub-cooler6 Sep 2012US 2012/0222846 A1Delphi Technologies, Inc.
Most cited
By later US patents
- Method of regulating an outdoor steam condensor and apparatus for performing said method44US 4,450,899 AFlakt Aktiebolag · 1984
- Unitary heat pump air conditioner having a heat exchanger with an integral receiver and sub-cooler30US 9,239,193 B2Delphi Technologies, Inc. · 2016
- Air ejector vacuum control valve22US 6,588,499 B1PacifiCorp · 2003
- Cooling apparatus21US 4,747,980 ATranselektro Magyar Villamossagi Kulkereskedelmi Vallalat · 1988
- Freeze protected, air-cooled vacuum steam condensers19US 4,926,931 A1990