F02G 2253/01
Rotary piston seals
F02G2253/01 (Rotary piston seals) appears on 5 US grants and 4 published applications in this corpus.
Search patents in F02G- Granted patents
- 5
- Published applications
- 4
- Assignees
- 2
- Inventors
- 5
- Latest grant
- 12 Dec 2017
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 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 | 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 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 2 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Working cylinder for an energy converter12 Dec 2017US 9,840,983 B2
- Gerotor rotary Stirling cycle engine21 Jul 2015US 9,086,013 B2
- Rotary engine vane cap apparatus and method of operation therefor8 Apr 2014US 8,689,765 B2
- Magnetic driven hydrodynamic lubrication system for free piston stirling engine26 Dec 1989US 4,888,950 ASunPower Corporation
- Hydrodynamic lubrication system for piston devices particularly Stirling engines1 Nov 1983US 4,412,418 ASunPower Corporation
- Working cylinder for an energy converter21 May 2015US 2015/0135702 A1
- Gerotor rotary stirling cycle engine18 Sep 2014US 2014/0271308 A1
- Sealed Rotor Valve Engine24 Jul 2014US 2014/0205436 A1
- Rotary engine vane cap apparatus and method of operation therefor21 Jul 2011US 2011/0176947 A1Fibonacci International, Inc.
Most cited
By later US patents
- Hydrodynamic lubrication system for piston devices particularly Stirling engines11US 4,412,418 ASunPower Corporation · 1983
- Rotary engine vane cap apparatus and method of operation therefor5US 8,689,765 B22014
- Gerotor rotary Stirling cycle engine3US 9,086,013 B22015
- Magnetic driven hydrodynamic lubrication system for free piston stirling engine1US 4,888,950 ASunPower Corporation · 1989