F01K 7/32
The engines using steam of critical or overcritical pressure
Official title: the engines using steam of critical or overcritical pressure
F01K7/32 (The engines using steam of critical or overcritical pressure) appears on 133 US grants and 152 published applications in this corpus.
Search patents in F01K- Granted patents
- 133
- Published applications
- 152
- Assignees
- 77
- Inventors
- 282
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 1 | 4 |
| 2011 | 0 | 1 |
| 2012 | 2 | 0 |
| 2013 | 2 | 5 |
| 2014 | 3 | 8 |
| 2015 | 2 | 3 |
| 2016 | 4 | 14 |
| 2017 | 11 | 9 |
| 2018 | 9 | 10 |
| 2019 | 11 | 11 |
| 2020 | 12 | 17 |
| 2021 | 14 | 12 |
| 2022 | 11 | 24 |
| 2023 | 18 | 8 |
| 2024 | 13 | 10 |
| 2025 | 12 | 9 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ambient temperature thermal adapter for supercritical carbon dioxide power cycle4 Aug 2026US 12,698,730 B2TerraPower, LLC
- Method of generating energy from sequestered supercritical carbon dioxide19 May 2026US 12,631,091 B2Halliburton Energy Services.Inc.
- Geothermal power generation systems with pressure exchangers12 May 2026US 12,624,681 B2Energy Recovery, Inc.
- Methods and systems for generating power and thermal management having dual loop architecture7 Apr 2026US 12,595,759 B2The Boeing Company
- Intermediate pressure supercritical CO2 power cycle2 Dec 2025US 12,486,790 B2Southwest Research Institute
- Ambient temperature thermal adapter for supercritical carbon dioxide power cycle8 Oct 2026US 2026/0309058 A1TerraPower, LLC
- Methods and systems for generating power and thermal management having dual loop architecture9 Jul 2026US 2026/0194005 A1The Boeing Company
- Supercritical catalytic converter5 Mar 2026US 2026/0063056 A1High Alert Institute, Inc.
- Systems and methods for applying thermolysis and/or electrolysis gas compression to bland/ewing chemo-thermodynamic cycles29 Jan 2026US 2026/0028921 A1
- Turbine-generator, power plant and method4 Dec 2025US 2025/0369389 A1Aker Solutions AS
Most cited
By later US patents
- Thermodynamic cycles with supercritical CO.sub.2 cycle topping131US 3,971,211 AMcDonnell Douglas Corporation · 1976
- Supercritical carbon dioxide power cycle for waste heat recovery87US 9,341,084 B2Echogen Power Systems, LLC · 2016
- Mass management system for a supercritical working fluid circuit81US 10,077,683 B2Echogen Power Systems, LLC · 2018
- Supercritical working fluid circuit with a turbo pump and a start pump in series configuration72US 9,759,096 B2Echogen Power Systems, LLC · 2017
- Systems and methods for part load control of electrical power generating systems60US 9,316,121 B2SuperCritical Technologies, Inc. · 2016