F28D 20/02
Heat storage plants or apparatus in general: using latent heat
Official title: using latent heat
F28D20/02 (Heat storage plants or apparatus in general: using latent heat) appears on 1,636 US grants and 1,835 published applications in this corpus.
Search patents in F28D- Granted patents
- 1,636
- Published applications
- 1,835
- Assignees
- 1,019
- Inventors
- 3,953
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 7 | 0 |
| 1978 | 17 | 0 |
| 1979 | 11 | 0 |
| 1980 | 20 | 0 |
| 1981 | 35 | 0 |
| 1982 | 11 | 0 |
| 1983 | 22 | 0 |
| 1984 | 15 | 0 |
| 1985 | 19 | 0 |
| 1986 | 17 | 0 |
| 1987 | 17 | 0 |
| 1988 | 9 | 0 |
| 1989 | 16 | 0 |
| 1990 | 20 | 0 |
| 1991 | 14 | 0 |
| 1992 | 15 | 0 |
| 1993 | 14 | 0 |
| 1994 | 15 | 0 |
| 1995 | 20 | 0 |
| 1996 | 16 | 0 |
| 1997 | 21 | 0 |
| 1998 | 13 | 0 |
| 1999 | 26 | 0 |
| 2000 | 34 | 0 |
| 2001 | 40 | 6 |
| 2002 | 25 | 32 |
| 2003 | 23 | 40 |
| 2004 | 23 | 38 |
| 2005 | 20 | 37 |
| 2006 | 25 | 38 |
| 2007 | 25 | 33 |
| 2008 | 10 | 33 |
| 2009 | 13 | 52 |
| 2010 | 26 | 57 |
| 2011 | 30 | 76 |
| 2012 | 25 | 74 |
| 2013 | 28 | 77 |
| 2014 | 33 | 76 |
| 2015 | 43 | 96 |
| 2016 | 44 | 96 |
| 2017 | 58 | 96 |
| 2018 | 74 | 127 |
| 2019 | 103 | 123 |
| 2020 | 93 | 128 |
| 2021 | 109 | 94 |
| 2022 | 68 | 100 |
| 2023 | 65 | 75 |
| 2024 | 77 | 92 |
| 2025 | 82 | 83 |
| 2026 | 42 | 56 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F28D 20/023The latent heat storage material being enclosed in granular particles or dispersed448
- F28D 20/021The latent heat storage material and the heat-exchanging means being enclosed in373
- F28D 20/028Control arrangements therefor261
- F28D 20/025The latent heat storage material being in direct contact with a heat-exchange97
- F28D 20/026With different heat storage materials not coming into direct contact92
Recent patents
- Dual cooperative induction temperature control device and control method for micro-nano impact indentation tester6 Oct 2026US 12,757,300 B2Jilin University
- Controlling thermal energy storage29 Sep 2026US 12,747,873 B2Nostromo Ltd.
- Systems and methods for enhanced heat transfer loops22 Sep 2026US 12,742,575 B2Solvcor Technologies LLC
- Latent heat storage22 Sep 2026US 12,742,599 B2Shinko Electric Industries Co., Ltd.
- Powder material for sintering and solid latent heat storage member including the same8 Sep 2026US 12,729,333 B2National Institute of Advanced Industrial Science and Technology
- Separation and heat transfer systems8 Oct 2026US 2026/0309430 A1Solvcor Technologies LLC
- Microencapsulated phase change material slurry cooling system and method of operation8 Oct 2026US 2026/0309432 A1Northrop Grumman Corporation
- Two phase heat transfer with mixing1 Oct 2026US 2026/0298551 A1Solvcor Technolgies LLC
- Latent Heat Thermal Energy Storage Systems1 Oct 2026US 2026/0298552 A1Robert Bosch GmbH
- Thermal energy storage and power shifting system10 Sep 2026US 2026/0266203 A1Holtec International
Most cited
By later US patents
- Ergonomic systems and methods providing intelligent adaptive surfaces and temperature control392US 6,230,501 B1ProMXD Technology, Inc. · 2001
- Orthopedic device having gel pad with phase change material298US 4,964,402 ARoyce Medical Company · 1990
- Ergonomic systems and methods providing intelligent adaptive surfaces and temperature control226US 6,865,825 B2ProMDX Technology, Inc. · 2005
- Phase change material thermal capacitor clothing196US 6,855,410 B22005
- Packaging system for thermally controlling the temperature of electronic equipment182US 6,104,611 ANortel Networks Limited · 2000