F02B 25/12
Engines with u-shaped cylinders, having ports in each arm
Official title: Engines with U-shaped cylinders, having ports in each arm
F02B25/12 (Engines with u-shaped cylinders, having ports in each arm) appears on 15 US grants and 5 published applications in this corpus.
Search patents in F02B- Granted patents
- 15
- Published applications
- 5
- Assignees
- 6
- Inventors
- 19
- Latest grant
- 17 May 2011
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 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 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 2 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Double action piston assembly17 May 2011US 7,942,116 B2
- Plasmatron-catalyst system9 Oct 2007US 7,279,143 B2Massachusetts Institute of Technology
- Plasmatron-catalyst system21 Sep 2004US 6,793,899 B2Massachusetts Institute of Technology
- Reciprocating internal combustion engine with balancing and supercharging2 Mar 2004US 6,698,405 B2AUTOMAC S.A.S. di BIGI ING. MAURIZIO
- Flex-rod2 Jun 1998US 5,758,611 A
- Piston based double compounding engine20 Aug 2009US 2009/0205331 A1
- Double Action Piston Assembly8 Jan 2009US 2009/0007861 A1
- Plasmatron-catalyst system27 Jan 2005US 2005/0019230 A1Massachusetts Institute of Technology
- Reciprocating internal combustion engine with balancing and supercharging2 Oct 2003US 2003/0183211 A1AUTOMAC S.A.S. di BIGI ING. MAURIZIO
- Plasmatron-catalyst system31 Jan 2002US 2002/0012618 A1Massachusetts Institute of Technology
Most cited
By later US patents
- Leading piston engine with two cylinders interconnected through a transfer port36US 4,955,328 AThe Standard Oil Company · 1990
- Regeneratively acting two-stroke internal combustion engine22US 4,781,155 A1988
- Two-stroke-cycle dual-piston internal combustion engine13US 4,079,705 A1978
- Two-cycle, air-cooled uniflow gasoline engine for powering a portable tool13US 5,383,427 AWCI Outdoor Products, Inc. · 1995
- Reciprocating internal combustion engine with balancing and supercharging11US 6,698,405 B2AUTOMAC S.A.S. di BIGI ING. MAURIZIO · 2004