F28F 3/086
Having one or more openings therein forming tubular heat-exchange passages
Official title: {having one or more openings therein forming tubular heat-exchange passages}
F28F3/086 (Having one or more openings therein forming tubular heat-exchange passages) appears on 293 US grants and 364 published applications in this corpus.
Search patents in F28F- Granted patents
- 293
- Published applications
- 364
- Assignees
- 216
- Inventors
- 832
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 1 |
| 2003 | 3 | 7 |
| 2004 | 5 | 9 |
| 2005 | 4 | 7 |
| 2006 | 7 | 2 |
| 2007 | 4 | 9 |
| 2008 | 1 | 13 |
| 2009 | 10 | 8 |
| 2010 | 5 | 7 |
| 2011 | 8 | 3 |
| 2012 | 2 | 11 |
| 2013 | 5 | 17 |
| 2014 | 2 | 10 |
| 2015 | 6 | 10 |
| 2016 | 8 | 25 |
| 2017 | 8 | 20 |
| 2018 | 22 | 25 |
| 2019 | 23 | 28 |
| 2020 | 20 | 20 |
| 2021 | 21 | 32 |
| 2022 | 16 | 17 |
| 2023 | 16 | 21 |
| 2024 | 19 | 28 |
| 2025 | 15 | 20 |
| 2026 | 9 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Printed-circuit-type heat exchanger having improved durability, hydrogen storage device comprising same, and hydrogen compression device9 Jul 2026US 2026/0194303 A1Energyn Inc.
- Heat exchanger, manufacturing method, and device9 Jul 2026US 2026/0197972 A1National University Corporation Tokai National Higher Education and Research System
Most cited
By later US patents
- Modular microchannel heat exchanger201US 5,727,618 A1998
- Method and apparatus for efficient vertical fluid delivery for cooling a heat producing device123US 7,000,684 B2Cooligy, Inc. · 2006
- Impingement cooling apparatus for heat liberating device104US 4,494,171 ASundstrand Corporation · 1985
- Plate-type heat exchangers70US 6,082,445 ABASF SE · 2000
- Cooler or heat sink for electrical components or circuits and an electrical circuit with this heat sink64US 6,014,312 ACuramik Electronics GmbH · 2000