F28D 7/085
In the form of parallel conduits coupled by bent portions
Official title: {in the form of parallel conduits coupled by bent portions}
F28D7/085 (In the form of parallel conduits coupled by bent portions) appears on 232 US grants and 206 published applications in this corpus.
Search patents in F28D- Granted patents
- 232
- Published applications
- 206
- Assignees
- 162
- Inventors
- 518
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 7 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 8 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 1 |
| 2002 | 2 | 0 |
| 2003 | 1 | 3 |
| 2004 | 2 | 6 |
| 2005 | 3 | 5 |
| 2006 | 2 | 6 |
| 2007 | 1 | 12 |
| 2008 | 5 | 11 |
| 2009 | 8 | 1 |
| 2010 | 7 | 10 |
| 2011 | 3 | 2 |
| 2012 | 3 | 5 |
| 2013 | 1 | 4 |
| 2014 | 3 | 11 |
| 2015 | 2 | 7 |
| 2016 | 9 | 19 |
| 2017 | 10 | 13 |
| 2018 | 9 | 13 |
| 2019 | 15 | 17 |
| 2020 | 12 | 9 |
| 2021 | 16 | 9 |
| 2022 | 9 | 14 |
| 2023 | 11 | 7 |
| 2024 | 9 | 11 |
| 2025 | 9 | 4 |
| 2026 | 1 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
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- Economizers for waste heat recovery systems27 Aug 2026US 2026/0251406 A1Scope Technology and Manufacturing, LLC
- Wastewater heat exchanger27 Aug 2026US 2026/0251411 A1
- Heat exchanger and method for operating a heat exchanger30 Jul 2026US 2026/0218992 A1Huber SE
- Multitubular heat exchanger11 Jun 2026US 2026/0160504 A1Yanmar Holdings Co., Ltd.
- Air heating apparatus12 Mar 2026US 2026/0071828 A1Kyungdong Navien Co., Ltd.
Most cited
By later US patents
- Heat exchanger for fuel cell power plant reformer108US 4,781,241 AInternational Fuel Cells Corporation · 1988
- Refrigerated shelf for a food display counter61US 4,306,616 ADuke Manufacturing Co. · 1981
- Heat exchanger52US 6,840,309 B2innogy SE · 2005
- Compressed air dryer51US 4,235,081 AKellogg-American, Inc. · 1980
- Pump/heat exchanger49US 4,216,821 ACommissariat A L' Energie Atomique · 1980