F02G 2244/52
Having interconnecting adjacent cylinders constituting a single system
Official title: having interconnecting adjacent cylinders constituting a single system, e.g. "Rinia" engines
F02G2244/52 (Having interconnecting adjacent cylinders constituting a single system) appears on 51 US grants and 41 published applications in this corpus.
Search patents in F02G- Granted patents
- 51
- Published applications
- 41
- Assignees
- 19
- Inventors
- 63
- Latest grant
- 7 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 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 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 1 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 2 |
| 2015 | 1 | 4 |
| 2016 | 1 | 0 |
| 2017 | 5 | 1 |
| 2018 | 2 | 1 |
| 2019 | 0 | 1 |
| 2020 | 4 | 10 |
| 2021 | 7 | 2 |
| 2022 | 2 | 5 |
| 2023 | 5 | 4 |
| 2024 | 4 | 2 |
| 2025 | 2 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Double acting thermodynamically resonant free-piston multicylinder stirling system and method78US 7,134,279 B2Infinia Corporation · 2006
- Multiple-cylinder, free-piston, alpha configured stirling engines and heat pumps with stepped pistons33US 7,171,811 B1Global Cooling, Inc. · 2007
- Generator set24US 4,824,149 AMAN Technologie GmbH · 1989
- Stirling engines11US 5,345,765 AESD Engines Limited · 1994
- Two-cycle hot-gas engine10US 6,968,688 B2Enerlyt Potsdam GmbH · 2005