F28D 1/0391
A single plate being bent to form one or more conduits
Official title: {a single plate being bent to form one or more conduits}
F28D1/0391 (A single plate being bent to form one or more conduits) appears on 201 US grants and 247 published applications in this corpus.
Search patents in F28D- Granted patents
- 201
- Published applications
- 247
- Assignees
- 108
- Inventors
- 593
- Latest grant
- 18 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 8 | 0 |
| 1999 | 11 | 0 |
| 2000 | 6 | 0 |
| 2001 | 13 | 8 |
| 2002 | 13 | 15 |
| 2003 | 13 | 9 |
| 2004 | 7 | 13 |
| 2005 | 4 | 10 |
| 2006 | 6 | 13 |
| 2007 | 1 | 19 |
| 2008 | 3 | 10 |
| 2009 | 2 | 23 |
| 2010 | 6 | 16 |
| 2011 | 6 | 7 |
| 2012 | 5 | 9 |
| 2013 | 6 | 7 |
| 2014 | 7 | 4 |
| 2015 | 2 | 11 |
| 2016 | 1 | 6 |
| 2017 | 4 | 3 |
| 2018 | 5 | 5 |
| 2019 | 4 | 6 |
| 2020 | 5 | 18 |
| 2021 | 10 | 11 |
| 2022 | 10 | 7 |
| 2023 | 2 | 3 |
| 2024 | 5 | 4 |
| 2025 | 4 | 6 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Tube for heat exchangers and a method for manufacturing the tube79US 5,186,250 AShowa Aluminum Corporation · 1993
- Flat, multi-luminal tube for cross-flow-type indirect heat exchanger, having greater outer wall thickness towards side externally subject to corrosive inlet gas such as wet, salty air60US 4,570,700 ANippondenso Co., Ltd. · 1986
- Turbulator radiator tube and radiator construction derived therefrom56US 4,470,452 AFord Motor Company · 1984
- Multiple serpentine tube heat exchanger51US 5,036,909 AGeneral Motors Corporation · 1991
- Heat exchange tubes43US 5,441,106 ALlanelli Radiators Limited · 1995