F28F 3/08
Elements constructed for building-up into stacks
Official title: Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
F28F3/08 (Elements constructed for building-up into stacks) appears on 952 US grants and 1,113 published applications in this corpus.
Search patents in F28F- Granted patents
- 952
- Published applications
- 1,113
- Assignees
- 558
- Inventors
- 2,315
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 5 | 0 |
| 1979 | 6 | 0 |
| 1980 | 8 | 0 |
| 1981 | 15 | 0 |
| 1982 | 3 | 0 |
| 1983 | 9 | 0 |
| 1984 | 14 | 0 |
| 1985 | 9 | 0 |
| 1986 | 13 | 0 |
| 1987 | 12 | 0 |
| 1988 | 8 | 0 |
| 1989 | 9 | 0 |
| 1990 | 11 | 0 |
| 1991 | 10 | 0 |
| 1992 | 9 | 0 |
| 1993 | 9 | 0 |
| 1994 | 7 | 0 |
| 1995 | 10 | 0 |
| 1996 | 11 | 0 |
| 1997 | 3 | 0 |
| 1998 | 11 | 0 |
| 1999 | 11 | 0 |
| 2000 | 11 | 0 |
| 2001 | 4 | 2 |
| 2002 | 8 | 3 |
| 2003 | 6 | 12 |
| 2004 | 10 | 20 |
| 2005 | 9 | 14 |
| 2006 | 9 | 8 |
| 2007 | 9 | 17 |
| 2008 | 6 | 20 |
| 2009 | 17 | 21 |
| 2010 | 12 | 19 |
| 2011 | 11 | 22 |
| 2012 | 9 | 38 |
| 2013 | 11 | 51 |
| 2014 | 20 | 51 |
| 2015 | 19 | 54 |
| 2016 | 31 | 68 |
| 2017 | 43 | 62 |
| 2018 | 59 | 80 |
| 2019 | 77 | 88 |
| 2020 | 65 | 83 |
| 2021 | 55 | 89 |
| 2022 | 56 | 65 |
| 2023 | 53 | 68 |
| 2024 | 61 | 66 |
| 2025 | 45 | 48 |
| 2026 | 27 | 44 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Designs and applications of a low-drag, high-efficiency microchannel polymer heat exchanger6 Oct 2026US 12,753,981 B2The Regents of the University of California
- Interlocking plate heat exchanger22 Sep 2026US 12,741,309 B2Rtx Corporation
- Heat exchange structure comprising insertable alternating fin structure15 Sep 2026US 12,736,293 B2IHI Corporation
- Heat transport device and method for manufacturing same8 Sep 2026US 12,729,919 B2WELCON Inc.
- Thermal management module for a thermal management system1 Sep 2026US 12,722,450 B2Mahle International GmbH
- Sheet membrane apparatus8 Oct 2026US 2026/0309425 A1Baltimore Aircoil Company, Inc.
- Heat exchanger core with integrated distributer arrangement8 Oct 2026US 2026/0309433 A1Honeywell International Inc.
- Heat exchange mechanism, processing device, and processing machine1 Oct 2026US 2026/0298553 A1Hon. Precision, Inc.
- Heat transport structure1 Oct 2026US 2026/0298554 A1Panasonic Intellectual Property Management Co., Ltd.
- Stackable Aftercooler System1 Oct 2026US 2026/0298555 A1Powerex-Iwata Air Technology, Inc.
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
- System and method for thermally controlling an electronic display with reduced noise emissions104US 8,804,091 B2Manufacturing Resources International, Inc. · 2014
- Sheet material containing exfoliated vermiculite103US 4,271,228 AHollingsworth & Vose Company · 1981