F02G 2270/02
Pistons for reciprocating and rotating
F02G2270/02 (Pistons for reciprocating and rotating) appears on 12 US grants and 1 published applications in this corpus.
Search patents in F02G- Granted patents
- 12
- Published applications
- 1
- Assignees
- 5
- Inventors
- 18
- Latest grant
- 19 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 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 | 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 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 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
- Internal combustion engine having independent combustion chamber14 Jan 2020US 10,533,518 B2Liuzhou Zijing Technology Transfer Center Co., Ltd.
- Rotary Stirling cycle engine9 Aug 1994US 5,335,497 A
- Piston engine12 Mar 1991US 4,998,460 AU. S. Philips Corporation
- Rotary piston machine with sealing elements6 Nov 1990US 4,968,234 A
Most cited
By later US patents
- Rotary hot gas regenerative engine30US 4,009,573 ATranspower Corporation · 1977
- Hydrodynamic spiral-grooved journal bearing for electromagnetically rotated and reciprocated compressor piston29US 4,799,421 AU. S. Philips Corporation · 1989
- Stirling cycle rotary engine18US 4,753,073 A1988
- Rotary heat engine14US 4,357,800 A1982
- Sibling cycle piston and valving method11US 4,926,639 AMitchell/Sterling Machines/Systems, Inc. · 1990