F28F 1/128
Fins with openings
Official title: {Fins with openings, e.g. louvered fins}
F28F1/128 (Fins with openings) appears on 296 US grants and 389 published applications in this corpus.
Search patents in F28F- Granted patents
- 296
- Published applications
- 389
- Assignees
- 140
- Inventors
- 872
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 7 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 7 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 8 | 1 |
| 2002 | 9 | 9 |
| 2003 | 6 | 10 |
| 2004 | 2 | 10 |
| 2005 | 13 | 11 |
| 2006 | 5 | 15 |
| 2007 | 6 | 23 |
| 2008 | 5 | 11 |
| 2009 | 3 | 12 |
| 2010 | 2 | 13 |
| 2011 | 9 | 15 |
| 2012 | 6 | 8 |
| 2013 | 6 | 19 |
| 2014 | 7 | 15 |
| 2015 | 2 | 23 |
| 2016 | 10 | 14 |
| 2017 | 10 | 16 |
| 2018 | 14 | 20 |
| 2019 | 11 | 19 |
| 2020 | 13 | 24 |
| 2021 | 16 | 17 |
| 2022 | 19 | 19 |
| 2023 | 11 | 19 |
| 2024 | 15 | 26 |
| 2025 | 14 | 11 |
| 2026 | 10 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Heat exchanger and refrigeration cycle apparatus8 Sep 2026US 12,729,915 B2Mitsubishi Electric Corporation
- Heat exchanger and refrigeration cycle apparatus23 Jun 2026US 12,663,222 B2Mitsubishi Electric Corporation
- Fin device, heat exchanger having the same and method for manufacturing a fin device16 Jun 2026US 12,656,068 B2Mahle International GmbH
- Metal rotary heat transfer assembly for a rotary air heat exchanger2 Jun 2026US 12,644,658 B2LOSCAR Spółka z ograniczon odpowiedzialności
- Heat exchanger, air-conditioning apparatus equipped with heat exchanger, and method of manufacturing heat exchanger12 May 2026US 12,624,898 B2Mitsubishi Electric Corporation
- Fin, heat exchanger and water heater3 Sep 2026US 2026/0259014 A1Guangdong Midea Kitchen and Bath Appliances Mfg. Co., Ltd.
- Fin, heat exchanger and water heater3 Sep 2026US 2026/0259015 A1Guangdong Midea Kitchen and Bath Appliances Mfg. Co., Ltd.
- Heat exchanger27 Aug 2026US 2026/0251397 A1
- Heat exchanger20 Aug 2026US 2026/0243523 A1Sanden Corporation
- Heat exchanger and air handling unit6 Aug 2026US 2026/0227140 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Thermoelectric device with evaporating/condensing heat exchanger139US 5,737,923 AMarlow Industries, Inc. · 1998
- Thermoelectric refrigerator with evaporating/condensing heat exchanger113US 6,003,319 AMarlow Industries, Inc. · 1999
- Condenser for use in a car cooling system81US 4,825,941 AShowa Aluminum Corporation · 1989
- Corrugated fin type heat exchanger56US 4,332,293 ANippondenso Co., Ltd. · 1982
- Consolidated duplex heat exchanger55US 5,033,540 AShowa Aluminum Corporation · 1991