F28D 1/0383
With u-flow or serpentine-flow inside the conduits
Official title: {with U-flow or serpentine-flow inside the conduits}
F28D1/0383 (With u-flow or serpentine-flow inside the conduits) appears on 33 US grants and 46 published applications in this corpus.
Search patents in F28D- Granted patents
- 33
- Published applications
- 46
- Assignees
- 37
- Inventors
- 101
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 1 |
| 2007 | 2 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 4 |
| 2017 | 3 | 2 |
| 2018 | 1 | 3 |
| 2019 | 2 | 7 |
| 2020 | 4 | 3 |
| 2021 | 5 | 4 |
| 2022 | 1 | 7 |
| 2023 | 2 | 5 |
| 2024 | 3 | 1 |
| 2025 | 5 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
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- Air heat exchanger24US 4,898,234 AMcDonnell Douglas Corporation · 1990
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