F02B 25/06
The cylinder-head ports being controlled by working pistons
Official title: the cylinder-head ports being controlled by working pistons, e.g. by sleeve-shaped extensions thereof
F02B25/06 (The cylinder-head ports being controlled by working pistons) appears on 34 US grants and 38 published applications in this corpus.
Search patents in F02B- Granted patents
- 34
- Published applications
- 38
- Assignees
- 22
- Inventors
- 69
- Latest grant
- 7 May 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 1 |
| 2003 | 1 | 1 |
| 2004 | 2 | 1 |
| 2005 | 3 | 2 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 2 | 5 |
| 2012 | 2 | 3 |
| 2013 | 0 | 1 |
| 2014 | 3 | 2 |
| 2015 | 0 | 3 |
| 2016 | 2 | 4 |
| 2017 | 0 | 2 |
| 2018 | 4 | 2 |
| 2019 | 1 | 2 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 3 | 4 |
| 2024 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Two-stroke engine and method for operating a two-stroke engine7 May 2024US 11,976,587 B2Andreas Stihl AG & CO.KG
- Two-stroke engine9 Apr 2024US 11,952,937 B2Andreas Stihl AG & CO.KG
- Two-stroke internal combustion engine28 Nov 2023US 11,828,208 B2
- Two-stroke internal combustion engine and engine working machine24 Oct 2023US 11,795,871 B2Yamabiko Corporation
- Two-stroke engine and method for operating a two-stroke engine3 Oct 2023US 11,773,767 B2Andreas Stihl AG & CO.KG
- Two-stroke engine14 Dec 2023US 2023/0399973 A1Andreas Stihl AG & CO.KG
- Two-stroke engine and method for operating a two-stroke engine14 Dec 2023US 2023/0399974 A1Andreas Stihl AG & CO.KG
- Two-stroke internal combustion engine11 May 2023US 2023/0143774 A1
- Two-stroke internal combustion engine and engine working machine4 May 2023US 2023/0133431 A1Yamabiko Corporation
- Two-stroke engine and method for operating a two-stroke engine19 Aug 2021US 2021/0254544 A1Andreas Stihl AG & CO.KG
Most cited
By later US patents
- Internal combustion engine with an exhaust gas recirculation system118US 5,740,786 AMercedes-Benz AG · 1998
- Two-stroke cycle engine having linear gear drive30US 5,158,046 A1992
- Exhaust gas recirculation for a free piston engine30US 6,925,971 B1Ford Global Technologies, LLC · 2005
- Multi-cycle trainable piston engine21US 6,758,170 B12004
- Two cycle stratified charge gasoline engine10US 6,513,464 B12003