F28F 1/12
The means being only outside the tubular element
Official title: the means being only outside the tubular element
F28F1/12 (The means being only outside the tubular element) appears on 2,883 US grants and 3,649 published applications in this corpus.
Search patents in F28F- Granted patents
- 2,883
- Published applications
- 3,649
- Assignees
- 1,395
- Inventors
- 7,036
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 14 | 0 |
| 1978 | 21 | 0 |
| 1979 | 25 | 0 |
| 1980 | 34 | 0 |
| 1981 | 20 | 0 |
| 1982 | 24 | 0 |
| 1983 | 16 | 0 |
| 1984 | 26 | 0 |
| 1985 | 15 | 0 |
| 1986 | 27 | 0 |
| 1987 | 31 | 0 |
| 1988 | 25 | 0 |
| 1989 | 26 | 0 |
| 1990 | 25 | 0 |
| 1991 | 39 | 0 |
| 1992 | 26 | 0 |
| 1993 | 35 | 0 |
| 1994 | 30 | 0 |
| 1995 | 29 | 0 |
| 1996 | 30 | 0 |
| 1997 | 34 | 0 |
| 1998 | 60 | 0 |
| 1999 | 45 | 0 |
| 2000 | 39 | 0 |
| 2001 | 60 | 16 |
| 2002 | 44 | 50 |
| 2003 | 47 | 73 |
| 2004 | 46 | 88 |
| 2005 | 57 | 111 |
| 2006 | 76 | 100 |
| 2007 | 47 | 128 |
| 2008 | 40 | 138 |
| 2009 | 34 | 157 |
| 2010 | 61 | 164 |
| 2011 | 58 | 169 |
| 2012 | 60 | 127 |
| 2013 | 55 | 175 |
| 2014 | 50 | 183 |
| 2015 | 80 | 169 |
| 2016 | 83 | 172 |
| 2017 | 132 | 183 |
| 2018 | 150 | 195 |
| 2019 | 163 | 198 |
| 2020 | 132 | 187 |
| 2021 | 138 | 159 |
| 2022 | 130 | 185 |
| 2023 | 118 | 161 |
| 2024 | 122 | 148 |
| 2025 | 119 | 137 |
| 2026 | 69 | 76 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Heat exchanger6 Oct 2026US 12,753,977 B2Kyungdong Navien Co., Ltd.
- Heat exchanger and refrigeration cycle apparatus8 Sep 2026US 12,729,915 B2Mitsubishi Electric Corporation
- Heat exchanger, refrigeration cycle apparatus, and method for manufacturing heat exchanger8 Sep 2026US 12,729,920 B2Mitsubishi Electric Corporation
- Heat exchanger and heat exchanger manufacturing method1 Sep 2026US 12,723,824 B2LG Electronics Inc.
- Water tank assembly for heating device, and heating device25 Aug 2026US 12,716,614 B2Wuhu Midea Kitchen and Bath Appliances Mfg. Co., Ltd.
- Heat exchanger8 Oct 2026US 2026/0309428 A1Hanon Systems
- Heat exchanger24 Sep 2026US 2026/0287275 A1Daikin Industries, Ltd.
- Secondarily applied cold side features for cast heat exchanger24 Sep 2026US 2026/0287277 A1Rtx Corporation
- Fin and heat exchanger10 Sep 2026US 2026/0266564 A1Zhejiang Dunan Artificial Environment Co., Ltd.
- Heat exchanger and air conditioner employing the same10 Sep 2026US 2026/0266565 A1Samsung Electronics Co., Ltd.
Most cited
By later US patents
- Heat management system167US 6,351,381 B1Thermal Corp. · 2002
- Heat exchanger, heat pump, dehumidifier, and dehumidifying method148US 6,442,951 B1Ebara Corporation · 2002
- Heat exchanger141US 6,964,296 B2Modine Manufacturing Company · 2005
- Thermoelectric device with evaporating/condensing heat exchanger139US 5,737,923 AMarlow Industries, Inc. · 1998
- Jet apparatus having an ink jet head and temperature controller for that head123US 5,512,924 ACanon Kabushiki Kaisha · 1996