F28D 20/025
The latent heat storage material being in direct contact with a heat-exchange
Official title: {the latent heat storage material being in direct contact with a heat-exchange medium or with another heat storage material (F28D20/003 takes precedence)}
F28D20/025 (The latent heat storage material being in direct contact with a heat-exchange) appears on 97 US grants and 95 published applications in this corpus.
Search patents in F28D- Granted patents
- 97
- Published applications
- 95
- Assignees
- 90
- Inventors
- 267
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 6 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 2 |
| 2004 | 0 | 0 |
| 2005 | 0 | 3 |
| 2006 | 1 | 3 |
| 2007 | 2 | 3 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 1 | 2 |
| 2012 | 0 | 3 |
| 2013 | 1 | 3 |
| 2014 | 0 | 3 |
| 2015 | 4 | 4 |
| 2016 | 1 | 3 |
| 2017 | 1 | 7 |
| 2018 | 5 | 9 |
| 2019 | 8 | 8 |
| 2020 | 5 | 12 |
| 2021 | 7 | 3 |
| 2022 | 8 | 4 |
| 2023 | 1 | 4 |
| 2024 | 5 | 7 |
| 2025 | 5 | 6 |
| 2026 | 6 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Beverage preparation machine and cooling module25 Aug 2026US 12,715,751 B2Koninklijke Douwe Egberts B. V.
- Energy storage26 May 2026US 12,638,250 B2Mga Thermal Pty Ltd
- Thermal energy storage system with high efficiency heater control7 Apr 2026US 12,595,973 B2Rondo Energy, Inc.
- Heat absorption and radiation system20 Jan 2026US 12,529,528 B2Aisin Corporation
- Heat storage device, power generator, and heat generator13 Jan 2026US 12,523,433 B2Shinko Electric Industries Co., Ltd.
- Latent heat storage member10 Sep 2026US 2026/0266561 A1Shinko Electric Industries Co., Ltd.
- System and method for energy storage30 Jul 2026US 2026/0218991 A1
- Temperature equalizing unit28 May 2026US 2026/0146802 A1Tomoegawa Co., Ltd.
- Thermal battery and electricity generation system26 Mar 2026US 2026/0085895 A1
- Thermal energy storage for a fireplace22 Jan 2026US 2026/0022862 A1HNI Technologies Inc.
Most cited
By later US patents
- Heat storage system utilizing phase change materials government rights85US 6,116,330 AUniversity of Dayton · 2000
- Method of producing ice by using fluorinated pentane68US 5,444,986 AKajima Corporation · 1995
- Accumulator for storing heat or cold62US 4,408,654 ADoomernik B.V. · 1983
- Latent heat storage and transfer system and method61US 4,696,338 AThermal Energy Stroage, Inc. · 1987
- Combined solar radiation collector and thermal energy storage device51US 4,111,189 ACities Service Company · 1978