F02M 35/1019
Two-stroke engines
Official title: {Two-stroke engines; Reverse-flow scavenged or cross scavenged engines}
F02M35/1019 (Two-stroke engines) appears on 195 US grants and 114 published applications in this corpus.
Search patents in F02M- Granted patents
- 195
- Published applications
- 114
- Assignees
- 46
- Inventors
- 316
- Latest grant
- 25 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 6 | 0 |
| 1989 | 2 | 0 |
| 1990 | 6 | 0 |
| 1991 | 11 | 0 |
| 1992 | 10 | 0 |
| 1993 | 8 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 7 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 11 | 5 |
| 2002 | 11 | 9 |
| 2003 | 11 | 8 |
| 2004 | 3 | 10 |
| 2005 | 9 | 6 |
| 2006 | 5 | 4 |
| 2007 | 4 | 6 |
| 2008 | 3 | 3 |
| 2009 | 4 | 5 |
| 2010 | 4 | 8 |
| 2011 | 4 | 4 |
| 2012 | 6 | 7 |
| 2013 | 2 | 4 |
| 2014 | 8 | 4 |
| 2015 | 3 | 5 |
| 2016 | 1 | 4 |
| 2017 | 3 | 1 |
| 2018 | 5 | 2 |
| 2019 | 3 | 1 |
| 2020 | 1 | 2 |
| 2021 | 2 | 2 |
| 2022 | 1 | 4 |
| 2023 | 3 | 4 |
| 2024 | 5 | 2 |
| 2025 | 1 | 1 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Engine assembly and method for controlling an engine25 Mar 2025US 12,258,916 B2Bombardier Recreational Products Inc.
- 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
- Engine assembly and method for controlling an engine27 Feb 2024US 11,913,390 B2Bombardier Recreational Products Inc.
- Engine assembly and method for controlling an engine20 Feb 2024US 11,905,905 B2Bombardier Recreational Products Inc.
- Fuel injection arrangement for hand-held powertools8 Oct 2026US 2026/0309109 A1Husqvarna AB
- Fuel injection arrangement for hand-held powertools8 Oct 2026US 2026/0309110 A1Husqvarna AB
- Two-stroke engine and handheld work apparatus23 Jul 2026US 2026/0210286 A1Andreas Stihl AG & CO.KG
- A fuel injection arrangement for hand-held powertools23 Oct 2025US 2025/0327433 A1Husqvarna AB
- Engine assembly and method for controlling an engine13 Jun 2024US 2024/0191664 A1Bombardier Recreational Products Inc.
Most cited
By later US patents
- Combined air box, coolant reservoir and oil tank for snowmobiles55US 6,247,442 B1Polaris Industries Inc. · 2001
- Low profile internally packaged fuel injection system for two cycle engine39US 4,702,202 ABrunswick Corporation · 1987
- Throttle lever position sensor for two-stroke fuel injected engine36US 5,273,016 AOutboard Marine Corporation · 1993
- Internal combustion engine28US 6,418,891 B2Walbro Japan, Inc. · 2002
- Engine valve means and porting27US 4,000,723 APerformance Industries, Inc. · 1977