F24T
Geothermal collectors
Official title: Geothermal collectors; geothermal systems
F24T (Geothermal collectors) appears on 1,133 US grants and 1,288 published applications in this corpus.
Search patents in F24T- Granted patents
- 1,133
- Published applications
- 1,288
- Assignees
- 599
- Inventors
- 1,999
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 21 | 0 |
| 1978 | 16 | 0 |
| 1979 | 13 | 0 |
| 1980 | 9 | 0 |
| 1981 | 14 | 0 |
| 1982 | 17 | 0 |
| 1983 | 6 | 0 |
| 1984 | 10 | 0 |
| 1985 | 13 | 0 |
| 1986 | 7 | 0 |
| 1987 | 10 | 0 |
| 1988 | 7 | 0 |
| 1989 | 7 | 0 |
| 1990 | 14 | 0 |
| 1991 | 16 | 0 |
| 1992 | 10 | 0 |
| 1993 | 13 | 0 |
| 1994 | 11 | 0 |
| 1995 | 8 | 0 |
| 1996 | 11 | 0 |
| 1997 | 18 | 0 |
| 1998 | 10 | 0 |
| 1999 | 13 | 0 |
| 2000 | 7 | 0 |
| 2001 | 10 | 1 |
| 2002 | 3 | 5 |
| 2003 | 6 | 10 |
| 2004 | 8 | 16 |
| 2005 | 8 | 12 |
| 2006 | 13 | 15 |
| 2007 | 10 | 35 |
| 2008 | 16 | 43 |
| 2009 | 12 | 49 |
| 2010 | 18 | 82 |
| 2011 | 17 | 75 |
| 2012 | 39 | 64 |
| 2013 | 25 | 64 |
| 2014 | 35 | 63 |
| 2015 | 41 | 69 |
| 2016 | 47 | 29 |
| 2017 | 48 | 33 |
| 2018 | 34 | 35 |
| 2019 | 26 | 39 |
| 2020 | 29 | 50 |
| 2021 | 37 | 54 |
| 2022 | 47 | 60 |
| 2023 | 73 | 77 |
| 2024 | 76 | 109 |
| 2025 | 103 | 128 |
| 2026 | 61 | 71 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
Recent patents
- Boosting well performance in geothermal systems15 Sep 2026US 12,735,966 B2Schlumberger Technology Corporation
- System and method for operating ground-source heat pumps15 Sep 2026US 12,736,255 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 storage and withdrawal of electrical energy from a subterranean environment1 Sep 2026US 12,723,491 B2
- Geothermal Heat Exchangers and Related Installation Apparatuses, Systems, and Methods8 Oct 2026US 2026/0309371 A1Fluidaptic, LLC
- Geothermal energy system8 Oct 2026US 2026/0309372 A1Stoic Transitional Resources Inc.
- Geothermal energy system1 Oct 2026US 2026/0298503 A1Stoic Transitional Resources 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
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
- Method of recovering energy from subsurface petroleum reservoirs271US 4,031,956 AIn Situ Technology, Inc. · 1977
- Combined ambient-air and earth exchange heat pump system141US 5,461,876 A1995
- Geothermal petroleum refining126US 4,248,306 A1981
- Double walled insulated tubing and method of installing same121US 5,862,866 ARoxwell International Limited · 1999