F28D 7/06
The conduits having a single u-bend
Official title: the conduits having a single U-bend (F28D7/10 takes precedence){(F28D7/0016 and F28D7/0033 take precedence)}
F28D7/06 (The conduits having a single u-bend) appears on 365 US grants and 326 published applications in this corpus.
Search patents in F28D- Granted patents
- 365
- Published applications
- 326
- Assignees
- 226
- Inventors
- 810
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 2 | 0 |
| 1979 | 5 | 0 |
| 1980 | 12 | 0 |
| 1981 | 7 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 8 | 0 |
| 1986 | 4 | 0 |
| 1987 | 10 | 0 |
| 1988 | 7 | 0 |
| 1989 | 8 | 0 |
| 1990 | 11 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 7 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 3 |
| 2002 | 6 | 5 |
| 2003 | 3 | 6 |
| 2004 | 6 | 5 |
| 2005 | 3 | 10 |
| 2006 | 7 | 7 |
| 2007 | 3 | 6 |
| 2008 | 3 | 8 |
| 2009 | 3 | 10 |
| 2010 | 5 | 12 |
| 2011 | 2 | 16 |
| 2012 | 4 | 16 |
| 2013 | 10 | 21 |
| 2014 | 14 | 16 |
| 2015 | 9 | 20 |
| 2016 | 8 | 18 |
| 2017 | 17 | 28 |
| 2018 | 13 | 11 |
| 2019 | 20 | 27 |
| 2020 | 15 | 17 |
| 2021 | 16 | 12 |
| 2022 | 16 | 20 |
| 2023 | 13 | 11 |
| 2024 | 15 | 10 |
| 2025 | 7 | 6 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Methods and apparatus for supplying cooling air to turbine engines84US 6,584,778 B1General Electric Company · 2003
- Method and apparatus for preferential cooling75US 5,544,700 AGeneral Electric Company · 1996
- Motor vehicle exhaust gas heat exchanger for heating engine coolant and lubricating oil57US 4,685,430 AValeo · 1987
- Two pass shell and tube heat exchanger with return annular distributor56US 5,203,405 APhillips Petroleum Company · 1993
- Closure for heat exchanger43US 3,948,315 ABrown Fintube Company · 1976