F01K 25/02
The fluid remaining in the liquid phase
Official title: the fluid remaining in the liquid phase
F01K25/02 (The fluid remaining in the liquid phase) appears on 43 US grants and 60 published applications in this corpus.
Search patents in F01K- Granted patents
- 43
- Published applications
- 60
- Assignees
- 29
- Inventors
- 117
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 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 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 4 |
| 2004 | 2 | 2 |
| 2005 | 3 | 4 |
| 2006 | 2 | 1 |
| 2007 | 1 | 2 |
| 2008 | 0 | 2 |
| 2009 | 1 | 1 |
| 2010 | 0 | 3 |
| 2011 | 0 | 3 |
| 2012 | 0 | 5 |
| 2013 | 1 | 5 |
| 2014 | 3 | 3 |
| 2015 | 2 | 2 |
| 2016 | 1 | 4 |
| 2017 | 3 | 4 |
| 2018 | 2 | 1 |
| 2019 | 1 | 3 |
| 2020 | 4 | 2 |
| 2021 | 0 | 2 |
| 2022 | 2 | 0 |
| 2023 | 2 | 3 |
| 2024 | 2 | 3 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Low-grade waste heat recovery system using stored hydropower8 Sep 2026US 12,729,633 B2
- Low temperature magnetohydrodynamics power system7 Oct 2025US 12,438,432 B2Her Majesty the Queen in right of Canada, as represented by the Minister of Natural Resources
- Power device capable of generating greater propelling force9 Jan 2024US 11,866,160 B2
- Energy storage systems and methods using heterogeneous pressure media and interactive actuation module9 Jan 2024US 11,870,253 B2Power8 Tech. Inc.
- Vapor-powered liquid-driven turbine19 Sep 2023US 11,761,355 B2
- Thermal energy conversion method and system26 Jun 2025US 2025/0207516 A1
- Low-grade waste heat recovery system using stored hydropower26 Sep 2024US 2024/0318594 A1
- Low temperature magnetohydrodynamics power system23 May 2024US 2024/0171055 A1Her Majesty the Queen in right of Canada, as represented by the Minister of Natural Resources
- Power device capable of generating greater propelling force14 Mar 2024US 2024/0083572 A1
- Energy storage systems and methods using heterogeneous pressure media and interactive actuation module8 Jun 2023US 2023/0179016 A1Power8 Tech. Inc.
Most cited
By later US patents
- Valve network and method for controlling pressure within a supercritical working fluid circuit in a heat engine system with a turbopump74US 10,267,184 B2Echogen Power Systems, LLC · 2019
- Waste heat regenerating system60US 4,030,303 A1977
- Combustion-driven hydroelectric generating system with closed loop control49US 6,739,131 B12004
- Liquid piston internal combustion power system47US 7,191,738 B2LiquidPiston, Inc. · 2007
- Engine for converting thermal energy to stored energy41US 7,000,389 B22006