F02B 25/24
Inlet or outlet openings being timed asymmetrically relative to bottom dead-centre
F02B25/24 (Inlet or outlet openings being timed asymmetrically relative to bottom dead-centre) appears on 19 US grants and 17 published applications in this corpus.
Search patents in F02B- Granted patents
- 19
- Published applications
- 17
- Assignees
- 8
- Inventors
- 42
- Latest grant
- 28 Nov 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 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 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 3 | 2 |
| 2006 | 2 | 5 |
| 2007 | 2 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 3 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 1 |
| 2023 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method in a two-stroke engine and two-stroke engine28 Nov 2023US 11,828,238 B2Hedman Ericsson Patent AB
- Two-cycle engine11 Apr 2023US 11,624,337 B2Yamabiko Corporation
- Two-stroke internal combustion engine8 Nov 2022US 11,492,956 B2Emak S.P.A.
- Asymmetric transfer and intake in two-strokes4 Jul 2017US 9,695,739 B2
- Two-stroke engine2 Dec 2014US 8,899,194 B2Andreas Stihl AG & CO.KG
- Two-cycle engine2 Feb 2023US 2023/0036494 A1Yamabiko Corporation
- Two-stroke internal combustion engine3 Mar 2022US 2022/0065159 A1Emak S.P.A.
- Method in a two-stroke engine and two-stroke engine15 Oct 2020US 2020/0325834 A1Hedman Ericsson Patent AB
- Exhaust aftertreatment system and method16 Jun 2016US 2016/0169072 A1BorgWarner Inc.
- Asymmetric transfer and intake in two-strokes3 Dec 2015US 2015/0345372 A1
Most cited
By later US patents
- Two-stroke engine operation method and internal combustion two-stroke engine13US 6,065,432 A2000
- Epitrochoidal crankshaft mechanism and method12US 7,185,557 B22007
- Two-stroke engine and direct thrust piston10US 4,142,500 A1979
- Two stroke engine having reduced emissions7US 6,263,841 B12001
- Two-cycle engine having scavenging7US 6,895,910 B2Andreas Stihl AG & CO.KG · 2005