F28D 21/0015
Heat and mass exchangers
Official title: {Heat and mass exchangers, e.g. with permeable walls}
F28D21/0015 (Heat and mass exchangers) appears on 258 US grants and 375 published applications in this corpus.
Search patents in F28D- Granted patents
- 258
- Published applications
- 375
- Assignees
- 200
- Inventors
- 631
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 3 |
| 2004 | 3 | 7 |
| 2005 | 1 | 4 |
| 2006 | 3 | 7 |
| 2007 | 6 | 8 |
| 2008 | 3 | 10 |
| 2009 | 7 | 7 |
| 2010 | 2 | 10 |
| 2011 | 4 | 11 |
| 2012 | 5 | 27 |
| 2013 | 9 | 20 |
| 2014 | 11 | 26 |
| 2015 | 10 | 20 |
| 2016 | 20 | 30 |
| 2017 | 24 | 20 |
| 2018 | 16 | 17 |
| 2019 | 14 | 22 |
| 2020 | 10 | 17 |
| 2021 | 18 | 16 |
| 2022 | 14 | 28 |
| 2023 | 20 | 22 |
| 2024 | 9 | 17 |
| 2025 | 12 | 16 |
| 2026 | 12 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for producing an exchanger element package for a vehicle8 Sep 2026US 12,729,875 B2Plastic Concept GmbH
- Laminate11 Aug 2026US 12,703,777 B2Daicel Corporation
- Plate for a plate-type heat exchanger21 Jul 2026US 12,687,351 B2Klingenburg GmbH
- Lid assembly for a container7 Jul 2026US 12,673,807 B2
- Liquid desiccant air conditioner modules having interlocking panels for controlling airflow16 Jun 2026US 12,656,019 B2Copeland Corporation
- Sheet membrane apparatus8 Oct 2026US 2026/0309425 A1Baltimore Aircoil Company, Inc.
- Total heat exchanger and ventilation device10 Sep 2026US 2026/0266502 A1Sharp Kabushiki Kaisha
- Stacked structure, and heat-exchange-type ventilation device and air purification device using same13 Aug 2026US 2026/0235318 A1Panasonic Intellectual Property Management Co., Ltd.
- Three-dimensional hollow heat exchanger and its applications16 Jul 2026US 2026/0202151 A1Zhejiang Normal University
- Heat exchanger, ventilator, and method for manufacturing heat exchanger7 May 2026US 2026/0126206 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Method and apparatus for efficient vertical fluid delivery for cooling a heat producing device123US 7,000,684 B2Cooligy, Inc. · 2006
- Method and apparatus for flexible fluid delivery for cooling desired hot spots in a heat producing device118US 6,988,534 B2Cooligy, Inc. · 2006
- Heat and mass exchanger94US 7,269,966 B2AIL Reasearch, Inc. · 2007
- Crosslinked polymer electrolyte membranes for heat and moisture exchange devices86US 6,841,601 B2Dais Analytic Corporation · 2005
- Indirect evaporative cooler using membrane-contained, liquid desiccant for dehumidification84US 8,769,971 B2Alliance for Sustainable Energy, LLC · 2014