F01K 21/005
Steam engine plants not otherwise provided for: using mixtures of liquid and
Official title: {using mixtures of liquid and steam or evaporation of a liquid by expansion}
F01K21/005 (Steam engine plants not otherwise provided for: using mixtures of liquid and) appears on 95 US grants and 56 published applications in this corpus.
Search patents in F01K- Granted patents
- 95
- Published applications
- 56
- Assignees
- 42
- Inventors
- 147
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 6 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 7 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 3 |
| 2005 | 1 | 1 |
| 2006 | 0 | 2 |
| 2007 | 1 | 1 |
| 2008 | 0 | 2 |
| 2009 | 1 | 0 |
| 2010 | 0 | 4 |
| 2011 | 1 | 2 |
| 2012 | 0 | 1 |
| 2013 | 3 | 2 |
| 2014 | 0 | 0 |
| 2015 | 1 | 3 |
| 2016 | 0 | 2 |
| 2017 | 3 | 5 |
| 2018 | 4 | 8 |
| 2019 | 5 | 6 |
| 2020 | 6 | 3 |
| 2021 | 2 | 1 |
| 2022 | 4 | 3 |
| 2023 | 3 | 2 |
| 2024 | 2 | 2 |
| 2025 | 4 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of operating a heat cycle system, heat cycle system and method of modifying a heat cycle system14 Jul 2026US 12,680,478 B2Noditech AB
- 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
- Modified Rankine cycle without heat rejection, driven by a wet-vapor-region thermocompressor2 Sep 2025US 12,404,784 B2
- Heat engines, systems for providing pressurized refrigerant, and related methods26 Aug 2025US RE50,556 E1Heat Source Energy Corp.
- Hybrid heat engine system25 Feb 2025US 12,234,749 B2
- Method of operating a heat cycle system, heat cycle system and method of modifying a heat cycle system1 Oct 2026US 2026/0298113 A1Noditech AB
- Method of operating a heat cycle system, heat cycle system and method of modifying a heat cycle system18 Dec 2025US 2025/0382901 A1Noditech AB
- Modified rankine cycle without heat rejection, driven by a wet-vapor-region thermocompressor13 Jun 2024US 2024/0191640 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
- Hybrid heat engine system15 Jun 2023US 2023/0184143 A1
Most cited
By later US patents
- Hot-water storage type power generating unit72US 4,479,352 AMitsui Engineering & Shipbuilding Co., Ltd. · 1984
- Fresh water production from power plant waste heat64US 4,391,102 ABiphase Energy Systems · 1983
- Waste heat recovery system63US 3,995,428 A1976
- Power generating system employing geothermally heated fluid63US 4,063,417 ACarrier Corporation · 1977
- Method and apparatus for converting thermal energy to mechanical energy63US 4,170,116 A1979