F28D 7/026
The conduits of only one medium being helically coiled and formed by
Official title: {the conduits of only one medium being helically coiled and formed by bent members, e.g. plates, the coils having a cylindrical configuration}
F28D7/026 (The conduits of only one medium being helically coiled and formed by) appears on 121 US grants and 125 published applications in this corpus.
Search patents in F28D- Granted patents
- 121
- Published applications
- 125
- Assignees
- 99
- Inventors
- 267
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 1 |
| 2004 | 2 | 4 |
| 2005 | 3 | 4 |
| 2006 | 1 | 5 |
| 2007 | 3 | 7 |
| 2008 | 9 | 8 |
| 2009 | 0 | 2 |
| 2010 | 3 | 6 |
| 2011 | 4 | 9 |
| 2012 | 5 | 7 |
| 2013 | 6 | 9 |
| 2014 | 3 | 3 |
| 2015 | 1 | 9 |
| 2016 | 5 | 10 |
| 2017 | 5 | 6 |
| 2018 | 3 | 11 |
| 2019 | 7 | 4 |
| 2020 | 7 | 0 |
| 2021 | 4 | 3 |
| 2022 | 1 | 2 |
| 2023 | 1 | 8 |
| 2024 | 3 | 3 |
| 2025 | 4 | 2 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Extracorporeal circuit blood heat exchanger109US 4,231,425 A1980
- Reformer tube heat transfer device51US 4,847,051 AInternational Fuel Cells Corporation · 1989
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- Method and means for recovering heat in the pyrolysis of 1,2-dichloroethane34US 5,728,906 AKashima Vinyl Chloride Monomer Co., Ltd. · 1998
- Condenser for dehumidifying gas33US 6,619,054 B1Hydrogenics Corporation · 2003