F01B 17/04
Steam engines
F01B17/04 (Steam engines) appears on 60 US grants and 50 published applications in this corpus.
Search patents in F01B- Granted patents
- 60
- Published applications
- 50
- Assignees
- 24
- Inventors
- 80
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 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 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 6 |
| 2005 | 3 | 1 |
| 2006 | 1 | 4 |
| 2007 | 0 | 0 |
| 2008 | 2 | 0 |
| 2009 | 1 | 2 |
| 2010 | 0 | 3 |
| 2011 | 2 | 4 |
| 2012 | 1 | 1 |
| 2013 | 2 | 0 |
| 2014 | 2 | 3 |
| 2015 | 2 | 2 |
| 2016 | 3 | 3 |
| 2017 | 3 | 2 |
| 2018 | 4 | 7 |
| 2019 | 4 | 3 |
| 2020 | 5 | 2 |
| 2021 | 5 | 3 |
| 2022 | 1 | 1 |
| 2023 | 2 | 1 |
| 2024 | 1 | 1 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Steam engine27 Jan 2026US 12,535,005 B2Rd Estate GmbH & Co. KG
- Biomass energy generator system20 Aug 2024US 12,065,984 B2
- System, apparatus and method for clean, multi-energy generation9 May 2023US 11,643,984 B2
- Valve assembly18 Apr 2023US 11,629,789 B1
- Methods of operating a volumetric expander and a closed cycle plant including a volumetric expander27 Dec 2022US 11,536,138 B2Star Engine S.R.L.
- Steam engine10 Jul 2025US 2025/0223905 A1Rd Estate GmbH & Co. KG
- Biomass energy generator system7 Mar 2024US 2024/0077045 A1
- System, apparatus and method for clean, multi-energy generation9 Nov 2023US 2023/0358184 A1
- System, apparatus and method for clean, multi-energy generation24 Mar 2022US 2022/0090546 A1
- Volumetric expander, process of starting the volumetric expander, closed-cycle plant, and process for converting thermal energy into electric energy using said plant7 Oct 2021US 2021/0310358 A1Star Engine S.R.L.
Most cited
By later US patents
- Rankine cycle device of internal combustion engine50US 6,910,333 B2Honda Giken Kogyo Kabushiki Kaisha · 2005
- High efficiency multicycle internal combustion engine with waste heat recovery41US 8,061,140 B2Thermal Power Recovery LLC · 2011
- Method for the operation of a steam thermal engine, in particular as a vehicle power unit29US 6,834,503 B2Bayerische Motoren Werke Aktiengesellschaft · 2004
- Internal combustion engine with steam expansion stroke11US 6,986,252 B2Cargine Engineering AB · 2006
- Method and apparatus for achieving higher thermal efficiency in a steam engine or steam expander10US 8,448,440 B2Thermal Power Recovery LLC · 2013