F01K 25/103
Carbon dioxide
Official title: {Carbon dioxide (F01K25/065 takes precedence)}
F01K25/103 (Carbon dioxide) appears on 332 US grants and 380 published applications in this corpus.
Search patents in F01K- Granted patents
- 332
- Published applications
- 380
- Assignees
- 153
- Inventors
- 569
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 2 | 1 |
| 2010 | 0 | 6 |
| 2011 | 0 | 7 |
| 2012 | 4 | 16 |
| 2013 | 7 | 15 |
| 2014 | 12 | 22 |
| 2015 | 10 | 14 |
| 2016 | 16 | 31 |
| 2017 | 26 | 33 |
| 2018 | 29 | 30 |
| 2019 | 27 | 22 |
| 2020 | 26 | 32 |
| 2021 | 35 | 25 |
| 2022 | 27 | 37 |
| 2023 | 30 | 19 |
| 2024 | 32 | 28 |
| 2025 | 23 | 25 |
| 2026 | 14 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Energy storage device and method based on carbon dioxide gas-liquid phase change25 Aug 2026US 12,716,659 B2Exa Energy Technology (Shenzhen) Co. Ltd.
- Comprehensive energy utilization system for coupling carbon capture, energy storage, and thermal power generation18 Aug 2026US 12,710,000 B2Exax Energy Technology (Shenzhen) Co., Ltd
- Ambient temperature thermal adapter for supercritical carbon dioxide power cycle4 Aug 2026US 12,698,730 B2TerraPower, LLC
- Carbon dioxide energy storage system and control method thereof21 Jul 2026US 12,687,121 B1Exax Energy Technology (Shenzhen) Co., Ltd
- Method and system for managing carbon dioxide supplies and supercritical turbines using machine learning30 Jun 2026US 12,669,071 B2Saudi Arabian Oil Company
- Ambient temperature thermal adapter for supercritical carbon dioxide power cycle8 Oct 2026US 2026/0309058 A1TerraPower, LLC
- Method of generating energy from sequestered supercritical carbon dioxide17 Sep 2026US 2026/0275831 A1Halliburton Energy Services.Inc.
- Geothermal power generation systems with pressure exchangers17 Sep 2026US 2026/0275967 A1Energy Recovery, Inc.
- Oxy-fuel expander system including multiple heat exchangers and method6 Aug 2026US 2026/0226863 A1Nuovo Pignone Tecnologie Srl
- Comprehensive energy utilization system for coupling carbon capture, energy storage, and thermal power generation9 Jul 2026US 2026/0193993 A1Exax Energy Technology (Shenzhen) Co., Ltd
Most cited
By later US patents
- Carbon dioxide power cycle257US 4,498,289 A1985
- Power plant using CO.sub.2 as a working fluid175US 4,765,143 ACBI Research Corporation · 1988
- Thermodynamic cycles with supercritical CO.sub.2 cycle topping131US 3,971,211 AMcDonnell Douglas Corporation · 1976
- Process for the operation of a gas turbine plant123US 6,684,643 B2ALSTOM Technology Ltd · 2004
- Heat engines with cascade cycles97US 8,869,531 B2Echogen Power Systems, LLC · 2014