F24T 10/20
Geothermal collectors: using underground water as working fluid
Official title: using underground water as working fluid; using working fluid injected directly into the ground, e.g. using injection wells and recovery wells
F24T10/20 (Geothermal collectors: using underground water as working fluid) appears on 340 US grants and 353 published applications in this corpus.
Search patents in F24T- Granted patents
- 340
- Published applications
- 353
- Assignees
- 191
- Inventors
- 622
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 12 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 7 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 9 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 1 |
| 2003 | 1 | 3 |
| 2004 | 0 | 2 |
| 2005 | 3 | 2 |
| 2006 | 3 | 2 |
| 2007 | 1 | 7 |
| 2008 | 1 | 2 |
| 2009 | 3 | 9 |
| 2010 | 3 | 23 |
| 2011 | 2 | 8 |
| 2012 | 13 | 9 |
| 2013 | 8 | 13 |
| 2014 | 10 | 19 |
| 2015 | 7 | 14 |
| 2016 | 8 | 0 |
| 2017 | 14 | 8 |
| 2018 | 7 | 9 |
| 2019 | 3 | 7 |
| 2020 | 7 | 11 |
| 2021 | 12 | 23 |
| 2022 | 9 | 23 |
| 2023 | 26 | 33 |
| 2024 | 32 | 48 |
| 2025 | 50 | 43 |
| 2026 | 21 | 33 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Boosting well performance in geothermal systems15 Sep 2026US 12,735,966 B2Schlumberger Technology Corporation
- Single-well heat exchange system and downhole enhanced heat exchange device of geothermal well8 Sep 2026US 12,729,883 B2China Huaneng Group Clean Energy Technology Research Institute Co., Ltd
- System and methods for enhanced thermal syphoning8 Sep 2026US 12,729,884 B2Good Water Energy Ltd.
- System and method for injecting a gas into a subsurface geothermal formation25 Aug 2026US 12,716,331 B2Schlumberger Technology Corporation
- 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.
- Method and systems for cycling a geothermal well24 Sep 2026US 2026/0286819 A1Sage Geosystems Inc.
- System and method of monitoring subterranean reservoirs24 Sep 2026US 2026/0286836 A1Resman AS
- System and method of monitoring high temperature geothermal systems24 Sep 2026US 2026/0286837 A1Resman AS
- Pondless hydromechanical storage system24 Sep 2026US 2026/0286941 A1Sage Geosystems Inc.
- Non-condensable gas reinjection system24 Sep 2026US 2026/0287212 A1Fuji Electric Co., Ltd.
Most cited
By later US patents
- Sealing system for a well bore in which a hot fluid is circulated280US 4,513,816 ASociete Nationale Elf Aquitaine (Production) · 1985
- Storage capacity in hot dry rock reservoirs114US 5,685,362 AThe Regents of the University of California · 1997
- Process for heating a fluid in a geothermal formation110US 4,060,988 ATexaco Inc. · 1977
- System for geothermal production of electricity104US 5,661,977 A1997
- Geothermal energy production with supercritical fluids104US 6,668,554 B1The Regents of the University of California · 2003