F28F 3/046
The deformations being linear
Official title: {the deformations being linear, e.g. corrugations}
F28F3/046 (The deformations being linear) appears on 352 US grants and 487 published applications in this corpus.
Search patents in F28F- Granted patents
- 352
- Published applications
- 487
- Assignees
- 241
- Inventors
- 1,007
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 5 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 1 |
| 2002 | 5 | 2 |
| 2003 | 4 | 7 |
| 2004 | 4 | 11 |
| 2005 | 6 | 10 |
| 2006 | 6 | 2 |
| 2007 | 6 | 11 |
| 2008 | 2 | 7 |
| 2009 | 0 | 16 |
| 2010 | 2 | 23 |
| 2011 | 2 | 23 |
| 2012 | 9 | 19 |
| 2013 | 9 | 17 |
| 2014 | 18 | 22 |
| 2015 | 13 | 22 |
| 2016 | 13 | 24 |
| 2017 | 11 | 21 |
| 2018 | 22 | 22 |
| 2019 | 16 | 38 |
| 2020 | 23 | 24 |
| 2021 | 30 | 40 |
| 2022 | 24 | 22 |
| 2023 | 13 | 30 |
| 2024 | 21 | 21 |
| 2025 | 16 | 32 |
| 2026 | 12 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Spiral ripple circumferential flow heat exchanger98US 5,343,936 ALong Manufacturing Ltd. · 1994
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