F28D 1/0408
Multi-circuit heat exchangers
Official title: {Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids (F28F9/0234 takes precedence)}
F28D1/0408 (Multi-circuit heat exchangers) appears on 979 US grants and 1,203 published applications in this corpus.
Search patents in F28D- Granted patents
- 979
- Published applications
- 1,203
- Assignees
- 415
- Inventors
- 2,432
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 5 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 8 | 0 |
| 1986 | 1 | 0 |
| 1987 | 6 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 6 | 0 |
| 1991 | 8 | 0 |
| 1992 | 12 | 0 |
| 1993 | 13 | 0 |
| 1994 | 5 | 0 |
| 1995 | 8 | 0 |
| 1996 | 9 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 8 | 0 |
| 2000 | 16 | 0 |
| 2001 | 29 | 12 |
| 2002 | 21 | 28 |
| 2003 | 23 | 23 |
| 2004 | 22 | 36 |
| 2005 | 26 | 53 |
| 2006 | 35 | 33 |
| 2007 | 19 | 37 |
| 2008 | 15 | 39 |
| 2009 | 16 | 43 |
| 2010 | 20 | 23 |
| 2011 | 19 | 45 |
| 2012 | 15 | 40 |
| 2013 | 18 | 29 |
| 2014 | 19 | 57 |
| 2015 | 23 | 50 |
| 2016 | 24 | 41 |
| 2017 | 38 | 61 |
| 2018 | 50 | 68 |
| 2019 | 60 | 73 |
| 2020 | 51 | 81 |
| 2021 | 59 | 59 |
| 2022 | 63 | 73 |
| 2023 | 45 | 73 |
| 2024 | 67 | 55 |
| 2025 | 52 | 52 |
| 2026 | 20 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cooling module6 Oct 2026US 12,753,974 B2Hanon Systems
- Manifold fluid module1 Sep 2026US 12,723,817 B2Hanon Systems
- Thermal management system and method25 Aug 2026US 12,716,656 B2Transportation IP Holdings, LLC
- Heat exchanger and refrigeration cycle apparatus21 Jul 2026US 12,687,328 B2Mitsubishi Electric Corporation
- Heat exchanger7 Jul 2026US 12,674,622 B2Evapco, Inc.
- Composite Heat Exchanger8 Oct 2026US 2026/0309426 A1Hyundai Wia Corporation
- Serpentine heat exchanger6 Aug 2026US 2026/0227132 A1LG Electronics Inc.
- Heat exchange device30 Jul 2026US 2026/0218985 A1Shenzhen Envicool Technology Co., Ltd.
- Heat Exchanger Flat Tube, Heat Exchanger Flat Tube Assembly and Heat Exchanger30 Jul 2026US 2026/0218994 A1Zhejiang Dunan Artificial Environment Co., Ltd.
- Heat Exchanger with Improved Performance16 Jul 2026US 2026/0202089 A1Daikin Comfort Technologies Manufacturing, L.P.
Most cited
By later US patents
- Heat exchanger141US 6,964,296 B2Modine Manufacturing Company · 2005
- Cooling module83US 5,046,554 ACalsonic International, Inc. · 1991
- Hot aisle containment cooling unit and method for cooling80US 8,031,468 B2American Power Conversion Corporation · 2011
- Cooling system for work vehicle72US 6,129,056 ACase Corporation · 2000
- Heat exchanger module for a vehicle or the like69US 4,651,816 AModine Manufacturing Company · 1987