F28D 20/0034
Heat storage plants or apparatus in general: using liquid heat storage material
Official title: {using liquid heat storage material}
F28D20/0034 (Heat storage plants or apparatus in general: using liquid heat storage material) appears on 729 US grants and 914 published applications in this corpus.
Search patents in F28D- Granted patents
- 729
- Published applications
- 914
- Assignees
- 527
- Inventors
- 1,871
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 10 | 0 |
| 1978 | 10 | 0 |
| 1979 | 23 | 0 |
| 1980 | 14 | 0 |
| 1981 | 14 | 0 |
| 1982 | 12 | 0 |
| 1983 | 12 | 0 |
| 1984 | 9 | 0 |
| 1985 | 10 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 7 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 1 |
| 2002 | 2 | 6 |
| 2003 | 5 | 10 |
| 2004 | 8 | 8 |
| 2005 | 6 | 12 |
| 2006 | 6 | 6 |
| 2007 | 5 | 14 |
| 2008 | 4 | 23 |
| 2009 | 6 | 26 |
| 2010 | 10 | 38 |
| 2011 | 16 | 45 |
| 2012 | 10 | 37 |
| 2013 | 16 | 42 |
| 2014 | 13 | 37 |
| 2015 | 28 | 61 |
| 2016 | 32 | 51 |
| 2017 | 38 | 60 |
| 2018 | 40 | 48 |
| 2019 | 52 | 50 |
| 2020 | 38 | 43 |
| 2021 | 44 | 43 |
| 2022 | 34 | 53 |
| 2023 | 36 | 52 |
| 2024 | 36 | 66 |
| 2025 | 50 | 45 |
| 2026 | 28 | 37 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Diffuser using collision of vortex rings and heat storage tank system including same15 Sep 2026US 12,736,292 B2FT Energy
- Thermal energy storage system and method with heat recovery steam generator1 Sep 2026US 12,723,525 B2Nooter/Eriksen, Inc.
- Thermodynamic cycle system with thermal plant integration1 Sep 2026US 12,723,542 B2Malta Inc.
- Condenser18 Aug 2026US 12,710,232 B2
- Cold climate heat pump system with energy storage11 Aug 2026US 12,704,328 B2Trane International Inc.
- Separation and heat transfer systems8 Oct 2026US 2026/0309430 A1Solvcor Technologies LLC
- Two phase heat transfer with mixing1 Oct 2026US 2026/0298551 A1Solvcor Technolgies LLC
- Apparatus for thermal energy storage and plant for energy transformation and storage24 Sep 2026US 2026/0286867 A1Energy Dome S.P.A.
- Improvements in and relating to nucleation agent compositions and nucleation agent pieces and methods for nucleating phase change materials (pcms)24 Sep 2026US 2026/0287274 A1Sunamp Limited
- Refining and/or petrochemical facility and apparatus for heating fluids in processes related to refining and petrochemical industries using rotary generated thermal energy17 Sep 2026US 2026/0274747 A1Coolbrook Oy
Most cited
By later US patents
- Molten salt receiver cooling system100US 6,701,711 B1The Boeing Company · 2004
- Hot liquid thermal energy storage tank and method87US 4,643,212 AChicago Bridge & Iron Company · 1987
- Power transformer waste heat recovery system85US 4,512,387 A1985
- Heat storage vessels for use with heat pumps and solar panels81US 5,941,238 A1999
- Method and apparatus for operating an improved thermocline storage unit77US 4,523,629 AThe United States of America as represented by the United States Department of Energy · 1985