F01K 17/02
Steam engine plants: using steam or condensate extracted or exhausted from steam
Official title: for heating purposes, e.g. industrial, domestic (F01K17/06 takes precedence; domestic- or space-heating systems, e.g. central-heating systems, in general F24D1/00, F24D3/00, F24D9/00)
F01K17/02 (Steam engine plants: using steam or condensate extracted or exhausted from steam) appears on 198 US grants and 207 published applications in this corpus.
Search patents in F01K- Granted patents
- 198
- Published applications
- 207
- Assignees
- 109
- Inventors
- 476
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 1 |
| 2003 | 3 | 8 |
| 2004 | 0 | 7 |
| 2005 | 1 | 1 |
| 2006 | 2 | 6 |
| 2007 | 3 | 1 |
| 2008 | 0 | 2 |
| 2009 | 0 | 4 |
| 2010 | 1 | 7 |
| 2011 | 2 | 7 |
| 2012 | 4 | 20 |
| 2013 | 4 | 12 |
| 2014 | 9 | 11 |
| 2015 | 5 | 14 |
| 2016 | 8 | 8 |
| 2017 | 14 | 16 |
| 2018 | 16 | 10 |
| 2019 | 14 | 11 |
| 2020 | 10 | 9 |
| 2021 | 11 | 5 |
| 2022 | 17 | 17 |
| 2023 | 10 | 11 |
| 2024 | 13 | 14 |
| 2025 | 6 | 4 |
| 2026 | 6 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Generate hydrogen as fuel at natural gas processing plant to reduce carbon dioxide emissions11 Aug 2026US 12,704,082 B2Saudi Arabian Oil Company
- Industrial scale power plant, a system including an industrial scale power plant and one or more appliances, a convection oven, and a hot and cold thermal fluid supply method11 Aug 2026US 12,704,249 B2Partners With Sun Inc.
- Energy utilization system and method for producing carbon-containing material2 Jun 2026US 12,644,193 B2Daikin Industries, Ltd.
- Thermal energy storage system with a heat pump for improved efficiency5 May 2026US 12,618,343 B2Rondo Energy, Inc.
- Steam turbine bypass for increased water heat absorption capacity steam injected turbine engine10 Feb 2026US 12,546,250 B2Rtx Corporation
- An industrial scale power plant, a system including an industrial scale power plant and one or more appliances, a convection oven, and a hot and cold thermal fluid supply method21 May 2026US 2026/0139826 A1Partners With Sun Inc.
- Heat and power cogeneration system31 Jul 2025US 2025/0243789 A1Practical Solutions LLC
- Method and improved device for converting thermal energy into kinetic energy22 May 2025US 2025/0163832 A1
- Thermal energy storage system with a heat pump for improved efficiency8 May 2025US 2025/0146428 A1Rondo Energy, Inc.
- Synergistic heat pumped thermal storage and flexible carbon capture system17 Apr 2025US 2025/0122815 A1Bright Generation Holdings, LLC
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
- Cogeneration system and method84US 4,752,697 AInternational Cogeneration Corporation · 1988
- Combined heat power system62US 8,674,525 B2Universiteit Gent · 2014