F28D 7/1684
The conduits having a non-circular cross-section
Official title: {the conduits having a non-circular cross-section}
F28D7/1684 (The conduits having a non-circular cross-section) appears on 294 US grants and 451 published applications in this corpus.
Search patents in F28D- Granted patents
- 294
- Published applications
- 451
- Assignees
- 165
- Inventors
- 939
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 1 |
| 2002 | 2 | 1 |
| 2003 | 1 | 5 |
| 2004 | 4 | 7 |
| 2005 | 3 | 13 |
| 2006 | 6 | 18 |
| 2007 | 13 | 13 |
| 2008 | 3 | 21 |
| 2009 | 5 | 16 |
| 2010 | 7 | 19 |
| 2011 | 8 | 21 |
| 2012 | 7 | 18 |
| 2013 | 11 | 17 |
| 2014 | 15 | 28 |
| 2015 | 17 | 22 |
| 2016 | 12 | 18 |
| 2017 | 15 | 30 |
| 2018 | 19 | 28 |
| 2019 | 31 | 33 |
| 2020 | 16 | 23 |
| 2021 | 20 | 31 |
| 2022 | 17 | 16 |
| 2023 | 20 | 22 |
| 2024 | 9 | 14 |
| 2025 | 16 | 12 |
| 2026 | 8 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Heat exchanger and assembly method therefor15 Sep 2026US 12,736,290 B2Zhejiang Sanhua Automotive Components Co., Ltd.
- Heat exchanger for air cooling1 Sep 2026US 12,723,819 B2Valeo Autosystemy Sp. z o.o.
- Heat exchanger turnaround section18 Aug 2026US 12,710,240 B2Hamilton Sundstrand Corporation
- Heat exchanger with corrosion reducing sacrificial component21 Jul 2026US 12,687,348 B2Valeo Autosystemy Sp. z o.o.
- Heat exchanger7 Jul 2026US 12,674,624 B2Zhejiang Dunan Artificial Environment Co., Ltd.
- Heat exchanger20 Aug 2026US 2026/0243523 A1Sanden Corporation
- Integrated Anode For A Heat Exchanger18 Jun 2026US 2026/0168701 A1Rheem Manufacturing Company
- A heat exchanger18 Jun 2026US 2026/0168738 A1Valeo Systemes Thermiques
- Heat exchanger and method of manufacture therefor26 Feb 2026US 2026/0055966 A1Conflux Technology Pty Ltd
- Microtube heat exchanger devices, systems, and methods18 Dec 2025US 2025/0383155 A1Intergalactic Spaceworx, LLC
Most cited
By later US patents
- Cooling air cooler for a gas turbine engine86US 4,137,705 AGeneral Electric Company · 1979
- Turbofan provided with a pre-cooler46US 7,926,261 B2Airbus France · 2011
- Exhaust gas heat exchanger40US 7,032,577 B2Behr GmbH & Co. · 2006
- EGR and oil cooling system34US 6,360,702 B1Isuzu Motors Limited · 2002
- Heat exchanger33US 6,920,918 B2Modine Manufacturing Company · 2005