F03G 4/023
Devices for producing mechanical power from geothermal energy: characterised by the geothermal
Official title: {characterised by the geothermal collectors}
F03G4/023 (Devices for producing mechanical power from geothermal energy: characterised by the geothermal) appears on 402 US grants and 303 published applications in this corpus.
Search patents in F03G- Granted patents
- 402
- Published applications
- 303
- Assignees
- 183
- Inventors
- 506
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 11 | 0 |
| 1978 | 9 | 0 |
| 1979 | 7 | 0 |
| 1980 | 12 | 0 |
| 1981 | 9 | 0 |
| 1982 | 11 | 0 |
| 1983 | 7 | 0 |
| 1984 | 7 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 7 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 7 | 0 |
| 1996 | 6 | 0 |
| 1997 | 12 | 0 |
| 1998 | 5 | 0 |
| 1999 | 7 | 0 |
| 2000 | 5 | 0 |
| 2001 | 10 | 3 |
| 2002 | 0 | 1 |
| 2003 | 2 | 2 |
| 2004 | 2 | 2 |
| 2005 | 3 | 2 |
| 2006 | 1 | 2 |
| 2007 | 2 | 5 |
| 2008 | 2 | 4 |
| 2009 | 2 | 5 |
| 2010 | 3 | 14 |
| 2011 | 1 | 13 |
| 2012 | 3 | 11 |
| 2013 | 5 | 21 |
| 2014 | 13 | 17 |
| 2015 | 12 | 12 |
| 2016 | 12 | 6 |
| 2017 | 13 | 7 |
| 2018 | 9 | 11 |
| 2019 | 4 | 8 |
| 2020 | 6 | 12 |
| 2021 | 13 | 15 |
| 2022 | 14 | 23 |
| 2023 | 27 | 25 |
| 2024 | 31 | 41 |
| 2025 | 33 | 24 |
| 2026 | 17 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hybrid flexible energy solution using geothermal and hydrogen for data center applications1 Sep 2026US 12,723,572 B1Microsoft Technology Licensing, LLC
- Apparatus and methods for producing electricity using geothermal energy11 Aug 2026US 12,704,114 B2Geogen Technologies Inc.
- Methods, systems, and computer-readable media for use in harvesting heat from subterranean geologic formations4 Aug 2026US 12,698,762 B1Maza Aa Energy, Inc.
- Systems for generating energy from geothermal sources and methods of operating and constructing same30 Jun 2026US 12,669,269 B2Roda Energy 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.
- Pressure and temperature recovery systems for geothermal power plants24 Sep 2026US 2026/0286940 A1Sage Geosystems Inc.
- Pondless hydromechanical storage system24 Sep 2026US 2026/0286941 A1Sage Geosystems Inc.
- Systems for Generating Energy from Geothermal Sources and Methods of Operating and Constructing Same24 Sep 2026US 2026/0287213 A1Roda Energy Corporation
- Combined Power Generation using Geothermal and Solar Energy3 Sep 2026US 2026/0258792 A1Nant Holdings IP, LLC
- Geothermal power systems and processes20 Aug 2026US 2026/0243234 A1Sage Geosystems Inc.
Most cited
By later US patents
- Method and apparatus for converting heat from geothermal liquid and geothermal steam to electric power142US 5,440,882 AExergy S.P.A. · 1995
- 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
- Method of and apparatus for producing power using steam107US 5,497,624 AOrmat, Inc. · 1996
- Method and apparatus for steam generation from isothermal geothermal reservoirs106US 6,073,448 A2000