F03G 4/06
Devices for producing mechanical power from geothermal energy: with fluid flashing
Official title: with fluid flashing
F03G4/06 (Devices for producing mechanical power from geothermal energy: with fluid flashing) appears on 114 US grants and 44 published applications in this corpus.
Search patents in F03G- Granted patents
- 114
- Published applications
- 44
- Assignees
- 44
- Inventors
- 92
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 2 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 1 |
| 2005 | 2 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 3 |
| 2012 | 2 | 0 |
| 2013 | 1 | 0 |
| 2014 | 1 | 2 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 2 |
| 2019 | 0 | 2 |
| 2020 | 2 | 0 |
| 2021 | 3 | 2 |
| 2022 | 7 | 9 |
| 2023 | 9 | 9 |
| 2024 | 11 | 8 |
| 2025 | 5 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Thermal energy storage system for use with a low temperature heat source and a thermal power cycle system21 Apr 2026US 12,607,170 B2Rondo Energy, Inc.
- Systems for generating geothermal power in an organic Rankine cycle operation during hydrocarbon production based on working fluid temperature12 Aug 2025US 12,385,474 B2ICE Thermal Harvesting, LLC
- Modular mobile heat generation unit for generation of geothermal power in organic rankine cycle operations20 May 2025US 12,305,624 B2ICE Thermal Harvesting, LLC
- Optimizing well placement to maximize exposed hydraulic fracture area in geothermal wells6 May 2025US 12,292,212 B2Halliburton Energy Services.Inc.
- Geothermal systems and methods with an underground magma chamber28 Jan 2025US 12,209,776 B2EnhancedGEO Holdings, LLC
- Thermal Energy Storage System for Use with a Low Temperature Heat Source and a Thermal Power Cycle System15 Jan 2026US 2026/0015994 A1Rondo Energy, Inc.
- Optimizing Well Placement to Maximize Exposed Hydraulic Fracture Area in Geothermal Wells19 Dec 2024US 2024/0418412 A1Halliburton Energy Services.Inc.
- Systems for generating geothermal power in an organic rankine cycle operation during hydrocarbon production based on working fluid temperature19 Sep 2024US 2024/0309856 A1ICE Thermal Harvesting, LLC
- Geothermal systems and methods with an underground magma chamber5 Sep 2024US 2024/0295346 A1EnhancedGEO Holdings, LLC
- Systems for generating geothermal power in an organic rankine cycle operation during hydrocarbon production based on wellhead fluid temperature1 Aug 2024US 2024/0254973 A1ICE Thermal Harvesting, LLC
Most cited
By later US patents
- Method and apparatus for converting heat from geothermal fluid to electric power114US 4,982,568 A1991
- Method of and apparatus for producing power using steam107US 5,497,624 AOrmat, Inc. · 1996
- Method of and means for using a two-phase fluid for generating power in a rankine cycle power plant98US 5,038,567 AOrmat Turbines, Ltd. · 1991
- Inhibition of scale deposition from steam generation fluids76US 4,476,930 AUnion Oil Company of California · 1984
- Geothermal heat mining and utilization75US 5,515,679 A1996