F02G 2250/27
Martini stirling engines
Official title: Martini Stirling engines
F02G2250/27 (Martini stirling engines) appears on 5 US grants and 0 published applications in this corpus.
Search patents in F02G- Granted patents
- 5
- Published applications
- 0
- Assignees
- 2
- Inventors
- 6
- Latest grant
- 19 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 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 | 1 | 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 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Alternative heat source for an engine19 Aug 2025US 12,392,279 B1
- Hot-gas engine electric heater20 Oct 1998US 5,822,964 A
- Sibling cycle piston and valving method22 May 1990US 4,926,639 AMitchell/Sterling Machines/Systems, Inc.
- Stirling machine5 Jan 1988US 4,717,405 ABattelle Memorial Institute
- Thermocompressor utilizing a free piston coasting between rebound chambers2 Jan 1979US 4,132,505 A
No published applications in this class yet.
Most cited
By later US patents
- Stirling machine32US 4,717,405 ABattelle Memorial Institute · 1988
- Hot-gas engine electric heater14US 5,822,964 A1998
- Thermocompressor utilizing a free piston coasting between rebound chambers12US 4,132,505 A1979
- Sibling cycle piston and valving method11US 4,926,639 AMitchell/Sterling Machines/Systems, Inc. · 1990