F28D 20/0052
Heat storage plants or apparatus in general: using the ground body or
Official title: {using the ground body or aquifers as heat storage medium}
F28D20/0052 (Heat storage plants or apparatus in general: using the ground body or) appears on 197 US grants and 209 published applications in this corpus.
Search patents in F28D- Granted patents
- 197
- Published applications
- 209
- Assignees
- 105
- Inventors
- 352
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 6 | 0 |
| 1982 | 5 | 0 |
| 1983 | 7 | 0 |
| 1984 | 7 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 3 |
| 2004 | 5 | 6 |
| 2005 | 2 | 1 |
| 2006 | 2 | 3 |
| 2007 | 3 | 17 |
| 2008 | 5 | 8 |
| 2009 | 2 | 6 |
| 2010 | 3 | 10 |
| 2011 | 3 | 17 |
| 2012 | 4 | 16 |
| 2013 | 4 | 11 |
| 2014 | 4 | 9 |
| 2015 | 9 | 16 |
| 2016 | 7 | 8 |
| 2017 | 10 | 9 |
| 2018 | 7 | 6 |
| 2019 | 5 | 6 |
| 2020 | 2 | 4 |
| 2021 | 7 | 9 |
| 2022 | 8 | 8 |
| 2023 | 9 | 8 |
| 2024 | 8 | 10 |
| 2025 | 14 | 10 |
| 2026 | 3 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Slurry and use thereof for enhancing geothermal energy production from heat reservoir and method for producing same16 Jun 2026US 12,655,831 B2Element Technical Services Inc.
- Passive management of thermal stratification within long-duration liquid-based thermal energy storage reservoirs16 Jun 2026US 12,656,067 B1Terrafore Technologies, LLC
- Ground-source thermal system for rejecting data center waste heat to a facility10 Feb 2026US 12,546,189 B2Schlumberger Technology Corporation
- System and method for thermal energy storage30 Dec 2025US 12,513,784 B1Orca Sciences LLC
- Geothermal heat extractor2 Dec 2025US 12,487,010 B2Jtec Energy, Inc.
- Method For Achieving A Target Width Of A Thermal Pathway Formed In A Subterranean Heat Reservoir16 Jul 2026US 2026/0201870 A1Element Technical Services Inc.
- Geothermal power cycle using eahe (earth air heat exchanger)16 Jul 2026US 2026/0202100 A1Ege üNiversitesi Idari Ve Mali Isler Daire Bsk.
- Thermal Storage and Management System for Extraterrestrial Environments21 May 2026US 2026/0139911 A1Honeybee Robotics, LLC
- System and method for thermal energy storage2 Apr 2026US 2026/0095979 A1Orca Sciences LLC
- Ground-source thermal system for rejecting data center waste heat to a facility12 Mar 2026US 2026/0075761 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Power plant system for utilizing the heat energy of geothermal reservoirs94US 7,178,337 B22007
- Storage systems for heat or cold including aquifers92US 4,577,679 A1986
- Geothermal storage heating and cooling system91US 4,375,831 A1983
- Underground heat exchanging apparatus84US 4,741,388 A1988
- Geothermal heating and cooling system81US 4,325,228 A1982