F01K 17/00
Steam engine plants: using steam or condensate extracted or exhausted from steam
Official title: Using steam or condensate extracted or exhausted from steam engine plant (for heating feed-water F01K7/34; returning condensate to boiler F22D {F01K7/36 takes precedence})
F01K17/00 (Steam engine plants: using steam or condensate extracted or exhausted from steam) appears on 429 US grants and 488 published applications in this corpus.
Search patents in F01K- Granted patents
- 429
- Published applications
- 488
- Assignees
- 251
- Inventors
- 1,061
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 8 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 7 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 4 | 0 |
| 1985 | 7 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 2 |
| 2003 | 4 | 8 |
| 2004 | 1 | 9 |
| 2005 | 1 | 3 |
| 2006 | 5 | 8 |
| 2007 | 4 | 4 |
| 2008 | 2 | 7 |
| 2009 | 1 | 13 |
| 2010 | 3 | 24 |
| 2011 | 6 | 24 |
| 2012 | 8 | 46 |
| 2013 | 13 | 38 |
| 2014 | 26 | 37 |
| 2015 | 19 | 32 |
| 2016 | 21 | 26 |
| 2017 | 39 | 28 |
| 2018 | 31 | 21 |
| 2019 | 22 | 24 |
| 2020 | 19 | 20 |
| 2021 | 24 | 14 |
| 2022 | 25 | 34 |
| 2023 | 18 | 17 |
| 2024 | 28 | 28 |
| 2025 | 11 | 13 |
| 2026 | 11 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F01K 17/02Steam engine plants: using steam or condensate extracted or exhausted from steam198
- F01K 17/04Steam engine plants: using steam or condensate extracted or exhausted from steam114
- F01K 17/06Returning energy of steam, in exchanged form, to process92
- F01K 17/005Steam engine plants: using steam or condensate extracted or exhausted from steam39
Recent patents
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- Heat utilization system and heat utilization method25 Jun 2026US 2026/0176986 A1Mitsubishi Heavy Industries, Ltd.
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Most cited
By later US patents
- Mobile congeneration apparatus including inventive valve and boiler216US 5,517,822 AApplied Energy Systems of Oklahoma, Inc. · 1996
- Boiler system useful in mobile cogeneration apparatus158US 5,626,103 AApplied Energy Systems of Oklahoma, Inc. · 1997
- Integrated micro combined heat and power system92US 6,598,397 B2Energetix Micropower Limited · 2003
- High-temperature dual-source organic Rankine cycle with gas separations92US 8,046,999 B2Doty Scientific, Inc. · 2011
- Oilfield application of solar energy collection92US 8,701,773 B2GlassPoint Solar, Inc. · 2014