F01K 7/44
Use of steam for feed-water heating and another purpose
F01K7/44 (Use of steam for feed-water heating and another purpose) appears on 36 US grants and 37 published applications in this corpus.
Search patents in F01K- Granted patents
- 36
- Published applications
- 37
- Assignees
- 21
- Inventors
- 88
- Latest grant
- 6 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 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 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 3 | 5 |
| 2015 | 0 | 2 |
| 2016 | 2 | 5 |
| 2017 | 6 | 1 |
| 2018 | 3 | 0 |
| 2019 | 2 | 2 |
| 2020 | 0 | 6 |
| 2021 | 6 | 3 |
| 2022 | 3 | 2 |
| 2023 | 2 | 2 |
| 2024 | 2 | 3 |
| 2025 | 2 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dirty water distillation and salt harvesting system, method, and apparatus6 Jan 2026US 12,515,145 B2Heat IP Holdco, LLC
- Heat integration14 Oct 2025US 12,442,317 B2Cri, Hf
- Thermal oscillation systems19 Aug 2025US 12,392,302 B2Exency Ltd.
- Heat integration24 Sep 2024US 12,098,657 B2Cri, Hf
- Dirty water distillation and salt harvesting system, method, and apparatus16 Jan 2024US 11,872,508 B2XDI Holdings, LLC
- Thermal oscillation systems13 Nov 2025US 2025/0347257 A1Exency Ltd.
- Heat integration23 Oct 2025US 2025/0327412 A1Cri, Hf
- Thermal oscillation systems26 Dec 2024US 2024/0426259 A1Exency Ltd.
- Heat integration19 Dec 2024US 2024/0418105 A1Cri, Hf
- Dirty water distillation and salt harvesting system, method, and apparatus30 May 2024US 2024/0173642 A1XDI Holdings, LLC
Most cited
By later US patents
- Steam power plant7US 4,897,999 A1990
- Exhaust powered liquid evaporator apparatus and method4US 10,955,130 B1Marine Turbine Technologies, LLC · 2021
- Method and apparatus for regeneratively superheating auxiliary steam4US 4,277,944 AWestinghouse Electric Corp. · 1981
- Lignite drying in a lignite fired power plant with a heat pump4US 9,944,875 B2General Electric Technology GmbH · 2018
- Apparatus and method for thermal power generation3US 4,087,985 AWestinghouse Electric Corp. · 1978