F03G 4/037
Devices for producing mechanical power from geothermal energy: having other power cycles
Official title: {having other power cycles, e.g. Stirling, transcritical or supercritical cycles; combined with other power sources, e.g. wind, gas or nuclear}
F03G4/037 (Devices for producing mechanical power from geothermal energy: having other power cycles) appears on 83 US grants and 103 published applications in this corpus.
Search patents in F03G- Granted patents
- 83
- Published applications
- 103
- Assignees
- 54
- Inventors
- 151
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
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| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
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| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 6 |
| 2011 | 0 | 6 |
| 2012 | 2 | 5 |
| 2013 | 3 | 12 |
| 2014 | 10 | 15 |
| 2015 | 6 | 3 |
| 2016 | 5 | 4 |
| 2017 | 11 | 6 |
| 2018 | 3 | 2 |
| 2019 | 0 | 4 |
| 2020 | 1 | 8 |
| 2021 | 8 | 4 |
| 2022 | 6 | 4 |
| 2023 | 4 | 5 |
| 2024 | 3 | 5 |
| 2025 | 6 | 4 |
| 2026 | 5 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hybrid flexible energy solution using geothermal and hydrogen for data center applications1 Sep 2026US 12,723,572 B1Microsoft Technology Licensing, LLC
- System for supplying electricity, heat, and water using a Stirling engine powered by sustainable energy sources26 May 2026US 12,638,196 B2
- Combined power generation using geothermal and solar energy12 May 2026US 12,624,682 B2Nant Holdings IP, LLC
- Onshore electricity generation system5 May 2026US 12,618,395 B1
- Direct downhole electricity generation in a geothermal well24 Feb 2026US 12,560,360 B2Halliburton Energy Services.Inc.
- 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.
- System and method for coupling geothermal energy storage with coalbed methane extraction in unmineable coalbed6 Aug 2026US 2026/0226814 A1China University of Geosciences (Wuhan)
- Surface geothermal heat energy capture and storage system12 Mar 2026US 2026/0071762 A1
- System for supplying electricty, heat, and water using a stirling engine powered by sustainable energy sources5 Feb 2026US 2026/0036310 A1
Most cited
By later US patents
- Enhanced oil recovery system for use with a geopressured-geothermal conversion system76US 7,845,406 B22010
- Deep sea collection of solid materials from geothermal fluid55US 9,649,582 B22017
- Hydropower and geothermal energy system and methods53US 8,984,883 B22015
- Heat-electricity combined production system that utilizes solar energy and geothermal heat51US 9,243,616 B2Korea Institute of Energy Research · 2016
- Hybrid solar-geothermal power generation system49US 11,480,160 B1King Abdullah City for Atomic & Renewable Energy (K.A. Care) · 2022