F28F 9/0243
Header boxes having a circular cross-section
Official title: {Header boxes having a circular cross-section}
F28F9/0243 (Header boxes having a circular cross-section) appears on 291 US grants and 262 published applications in this corpus.
Search patents in F28F- Granted patents
- 291
- Published applications
- 262
- Assignees
- 162
- Inventors
- 754
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 7 | 0 |
| 1991 | 5 | 0 |
| 1992 | 11 | 0 |
| 1993 | 15 | 0 |
| 1994 | 10 | 0 |
| 1995 | 6 | 0 |
| 1996 | 6 | 0 |
| 1997 | 3 | 0 |
| 1998 | 8 | 0 |
| 1999 | 13 | 0 |
| 2000 | 3 | 0 |
| 2001 | 8 | 2 |
| 2002 | 5 | 6 |
| 2003 | 7 | 3 |
| 2004 | 4 | 5 |
| 2005 | 2 | 3 |
| 2006 | 2 | 10 |
| 2007 | 2 | 4 |
| 2008 | 4 | 4 |
| 2009 | 1 | 4 |
| 2010 | 1 | 4 |
| 2011 | 2 | 7 |
| 2012 | 3 | 7 |
| 2013 | 3 | 5 |
| 2014 | 6 | 9 |
| 2015 | 3 | 13 |
| 2016 | 4 | 9 |
| 2017 | 8 | 27 |
| 2018 | 12 | 17 |
| 2019 | 17 | 19 |
| 2020 | 14 | 17 |
| 2021 | 16 | 14 |
| 2022 | 9 | 27 |
| 2023 | 18 | 17 |
| 2024 | 16 | 15 |
| 2025 | 9 | 5 |
| 2026 | 7 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Plate-fin heat exchanger24 Feb 2026US 12,560,384 B2Blue Frontier Inc.
- Manifold assembly and heat exchanger17 Feb 2026US 12,553,674 B2Danfoss A/S
- Apparatus, System and Method for Heat Exchanger End Plate Erosion Resistance13 Aug 2026US 2026/0235371 A1Westermeyer Industries Inc.
- Plate heat exchanger comprising a mixing device30 Jul 2026US 2026/0218998 A1Valeo Systemes Thermiques
- Liquid distributor branch pipe structure and liquid distributor23 Jul 2026US 2026/0210459 A1Hanshan Ruike Metal Co., Ltd.
- Heat Exchanger with Improved Performance16 Jul 2026US 2026/0202089 A1Daikin Comfort Technologies Manufacturing, L.P.
- Heat exchanger18 Jun 2026US 2026/0168705 A1Sanden Corporation
Most cited
By later US patents
- Condenser with small hydraulic diameter flow path59US 4,998,580 AModine Manufacturing Company · 1991
- Evaporator or evaporator/condenser59US 5,279,360 AModine Manufacturing Company · 1994
- Heat exchanger for a refrigerant system54US 5,372,188 AModine Manufacturing Company · 1994
- Vehicle-loaded parallel flow type heat exchanger53US 5,203,407 AZexel Corporation · 1993
- Evaporator or evaporator/condenser49US 5,341,870 AModine Manufacturing Company · 1994