F03G 4/033
Devices for producing mechanical power from geothermal energy: having a rankine cycle
Official title: {having a Rankine cycle}
F03G4/033 (Devices for producing mechanical power from geothermal energy: having a rankine cycle) appears on 426 US grants and 277 published applications in this corpus.
Search patents in F03G- Granted patents
- 426
- Published applications
- 277
- Assignees
- 167
- Inventors
- 529
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 15 | 0 |
| 1978 | 11 | 0 |
| 1979 | 13 | 0 |
| 1980 | 10 | 0 |
| 1981 | 10 | 0 |
| 1982 | 16 | 0 |
| 1983 | 10 | 0 |
| 1984 | 8 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 6 | 0 |
| 1989 | 4 | 0 |
| 1990 | 7 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 8 | 0 |
| 1996 | 7 | 0 |
| 1997 | 12 | 0 |
| 1998 | 6 | 0 |
| 1999 | 7 | 0 |
| 2000 | 5 | 0 |
| 2001 | 10 | 3 |
| 2002 | 0 | 1 |
| 2003 | 3 | 2 |
| 2004 | 4 | 2 |
| 2005 | 4 | 3 |
| 2006 | 2 | 3 |
| 2007 | 3 | 3 |
| 2008 | 2 | 4 |
| 2009 | 3 | 6 |
| 2010 | 2 | 11 |
| 2011 | 1 | 13 |
| 2012 | 3 | 14 |
| 2013 | 3 | 20 |
| 2014 | 14 | 19 |
| 2015 | 15 | 21 |
| 2016 | 13 | 6 |
| 2017 | 19 | 9 |
| 2018 | 8 | 5 |
| 2019 | 1 | 8 |
| 2020 | 4 | 7 |
| 2021 | 7 | 11 |
| 2022 | 18 | 23 |
| 2023 | 26 | 24 |
| 2024 | 32 | 31 |
| 2025 | 21 | 15 |
| 2026 | 12 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Integrated carbon sequestration and power generation system and methods of use1 Sep 2026US 12,723,540 B2Arbor Energy and Resources Corporation
- Apparatus and methods for producing electricity using geothermal energy11 Aug 2026US 12,704,114 B2Geogen Technologies Inc.
- Thermal energy storage system coupled with thermal power cycle systems2 Jun 2026US 12,644,396 B2Rondo Energy, Inc.
- Combined power generation using geothermal and solar energy12 May 2026US 12,624,682 B2Nant Holdings IP, LLC
- 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.
- Pondless hydromechanical storage system24 Sep 2026US 2026/0286941 A1Sage Geosystems Inc.
- Combined Power Generation using Geothermal and Solar Energy3 Sep 2026US 2026/0258792 A1Nant Holdings IP, LLC
- Mobile oil stream energy recovery system27 Aug 2026US 2026/0251079 A1Gradient Geothermal Inc.
- A geothermal hydrogen production and compression system20 Aug 2026US 2026/0242246 A1Good Water Energy Ltd.
- 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 converting heat from geothermal fluid to electric power114US 4,982,568 A1991
- 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