F03G 4/069
Devices for producing mechanical power from geothermal energy: characterised by the brine
Official title: {characterised by the brine or scale treatment, e.g. brine desalination, scale deposit prevention or corrosion-proofing}
F03G4/069 (Devices for producing mechanical power from geothermal energy: characterised by the brine) appears on 113 US grants and 50 published applications in this corpus.
Search patents in F03G- Granted patents
- 113
- Published applications
- 50
- Assignees
- 54
- Inventors
- 144
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 7 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 2 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 3 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 7 |
| 2015 | 0 | 2 |
| 2016 | 4 | 0 |
| 2017 | 2 | 0 |
| 2018 | 3 | 3 |
| 2019 | 0 | 2 |
| 2020 | 0 | 2 |
| 2021 | 3 | 6 |
| 2022 | 5 | 2 |
| 2023 | 4 | 3 |
| 2024 | 1 | 4 |
| 2025 | 6 | 9 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for removing scale from geothermal turbine blade and method for geothermal power generation22 Sep 2026US 12,742,442 B2Japan Metals & Chemicals Co., Ltd.
- 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.
- Combined power generation using geothermal and solar energy12 May 2026US 12,624,682 B2Nant Holdings IP, LLC
- Geothermal power generation system and silica scale deposition control method10 Mar 2026US 12,571,378 B2Fuji Electric Co., Ltd.
- Combined energy production and carbon dioxide mineralization process and related installation7 Oct 2025US 12,435,704 B2Totalenergies Onetech
- Combined Power Generation using Geothermal and Solar Energy3 Sep 2026US 2026/0258792 A1Nant Holdings IP, LLC
- Method For Achieving A Target Width Of A Thermal Pathway Formed In A Subterranean Heat Reservoir16 Jul 2026US 2026/0201870 A1Element Technical Services Inc.
- Corrosion inhibitor composition and method for inhibiting corrosion in geothermal well system30 Apr 2026US 2026/0117115 A1Chemtreat, Inc.
- Geothermal power generation system4 Dec 2025US 2025/0368546 A1Fuji Electric Co., Ltd.
- Geothermal power generation system4 Dec 2025US 2025/0369425 A1Fuji Electric Co., Ltd.
Most cited
By later US patents
- Method and apparatus for cooling hot fluids112US 5,860,279 A1999
- Process for heating a fluid in a geothermal formation110US 4,060,988 ATexaco Inc. · 1977
- Geothermal power plant operating on high pressure geothermal fluid73US 5,671,601 AOrmat Industries Ltd. · 1997
- Method of and apparatus for controlling the operation of a valve that regulates the flow of geothermal fluid64US 5,483,797 AOrmat Industries Ltd. · 1996
- Geothermal salinity control system57US 4,492,083 AMagma Power Company · 1985