F28F 21/081
Heat exchange elements made from metals or metal alloys
Official title: {Heat exchange elements made from metals or metal alloys}
F28F21/081 (Heat exchange elements made from metals or metal alloys) appears on 1,170 US grants and 1,708 published applications in this corpus.
Search patents in F28F- Granted patents
- 1,170
- Published applications
- 1,708
- Assignees
- 839
- Inventors
- 3,806
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 6 | 0 |
| 1980 | 7 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 8 | 0 |
| 1984 | 1 | 0 |
| 1985 | 7 | 0 |
| 1986 | 10 | 0 |
| 1987 | 5 | 0 |
| 1988 | 15 | 0 |
| 1989 | 8 | 0 |
| 1990 | 13 | 0 |
| 1991 | 11 | 0 |
| 1992 | 5 | 0 |
| 1993 | 10 | 0 |
| 1994 | 5 | 0 |
| 1995 | 8 | 0 |
| 1996 | 10 | 0 |
| 1997 | 6 | 0 |
| 1998 | 14 | 0 |
| 1999 | 17 | 0 |
| 2000 | 14 | 0 |
| 2001 | 18 | 15 |
| 2002 | 19 | 25 |
| 2003 | 22 | 31 |
| 2004 | 15 | 30 |
| 2005 | 15 | 33 |
| 2006 | 16 | 37 |
| 2007 | 11 | 40 |
| 2008 | 9 | 32 |
| 2009 | 7 | 32 |
| 2010 | 19 | 45 |
| 2011 | 13 | 53 |
| 2012 | 22 | 46 |
| 2013 | 16 | 58 |
| 2014 | 25 | 75 |
| 2015 | 34 | 95 |
| 2016 | 45 | 106 |
| 2017 | 56 | 106 |
| 2018 | 72 | 140 |
| 2019 | 94 | 110 |
| 2020 | 100 | 107 |
| 2021 | 80 | 96 |
| 2022 | 74 | 101 |
| 2023 | 56 | 96 |
| 2024 | 60 | 73 |
| 2025 | 45 | 62 |
| 2026 | 34 | 64 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cold plate and method for manufacturing cold plate6 Oct 2026US 12,753,978 B2Fujikura Ltd.
- Internally profiled tubes18 Aug 2026US 12,710,236 B2Paralloy Limited
- Smart additively manufactured heat exchanger with adaptive profile and turbulator11 Aug 2026US 12,704,332 B2Hamilton Sundstrand Corporation
- Multifunctional surface structure for condensation enhancement and preparation method and use thereof11 Aug 2026US 12,704,334 B1Guangzhou Institute of Technology, Xidian University
- Heat exchanger for a motor vehicle with an aluminum alloy and method of manufacture14 Jul 2026US 12,680,767 B2Mahle International GmbH
- Thermal energy storage8 Oct 2026US 2026/0309431 A1Magaldi Power S.P.A.
- Multimaterial heat-transfer systems with controlled interface behavior1 Oct 2026US 2026/0298508 A1
- Multi-layer thermo-mechanical architectures for compact energy extraction systems1 Oct 2026US 2026/0298509 A1
- Method for Passivating a Metal Surface, Particularly an Aluminum Surface24 Sep 2026US 2026/0287283 A1Mahle International GmbH
- Advanced thermal management systems with hydrocarbon-coated aluminum cooling chambers17 Sep 2026US 2026/0276252 A1
Most cited
By later US patents
- Modular microchannel heat exchanger201US 5,727,618 A1998
- Low vibration cryocooled system for low temperature microscopy and spectroscopy applications108US 8,746,008 B1Montana Instruments Corporation · 2014
- Small volume heat sink/electronic assembly106US 6,031,751 AReliance Electric Industrial Company · 2000
- Electroformed high efficiency heat exchanger and method for making69US 5,199,487 AHughes Aircraft Company · 1993
- Method and apparatus for the production of energy68US 7,028,478 B2Advanced Combustion Energy Systems, Inc. · 2006