F02M 69/10
Peculiar to scavenged two-stroke engines
Official title: peculiar to scavenged two-stroke engines, e.g. injecting into crankcase-pump chamber
F02M69/10 (Peculiar to scavenged two-stroke engines) appears on 152 US grants and 34 published applications in this corpus.
Search patents in F02M- Granted patents
- 152
- Published applications
- 34
- Assignees
- 44
- Inventors
- 201
- Latest grant
- 30 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 8 | 0 |
| 1989 | 12 | 0 |
| 1990 | 5 | 0 |
| 1991 | 9 | 0 |
| 1992 | 13 | 0 |
| 1993 | 11 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 15 | 0 |
| 1999 | 8 | 0 |
| 2000 | 8 | 0 |
| 2001 | 7 | 2 |
| 2002 | 3 | 5 |
| 2003 | 5 | 2 |
| 2004 | 2 | 3 |
| 2005 | 2 | 0 |
| 2006 | 2 | 0 |
| 2007 | 0 | 2 |
| 2008 | 2 | 1 |
| 2009 | 1 | 2 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 2 |
| 2014 | 1 | 2 |
| 2015 | 1 | 2 |
| 2016 | 0 | 1 |
| 2017 | 1 | 1 |
| 2018 | 2 | 2 |
| 2019 | 3 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Two-stroke engine with crankcase fuel injector30 Sep 2025US 12,429,020 B2
- Two-stroke engine, and handheld power tool23 Jan 2024US 11,879,381 B2Husqvarna AB
- Fuel injection strategies in opposed-piston engines with multiple fuel injectors29 Oct 2019US 10,458,327 B2Achates Power, Inc.
- Injection system for two-stroke engines15 Oct 2019US 10,443,556 B2Betamotor S.P.A.
- Power tool25 Jun 2019US 10,329,994 B2Andreas Stihl AG & CO.KG
- Crankcase scavenged two-stroke engine and handheld power tool2 Apr 2026US 2026/0092554 A1Husqvarna AB
- A fuel injection arrangement for hand-held powertools23 Oct 2025US 2025/0327433 A1Husqvarna AB
- Air intake-type two-stroke engine26 Jun 2025US 2025/0207527 A1Yamabiko Corporation
- Two-stroke engine with crankcase fuel injector26 Dec 2024US 2024/0426266 A1Maruyama Mfg.Co., Inc.
- Two-Stroke Engine, and Handheld Power Tool22 Sep 2022US 2022/0298961 A1Husqvarna AB
Most cited
By later US patents
- Low profile internally packaged fuel injection system for two cycle engine39US 4,702,202 ABrunswick Corporation · 1987
- Fuel injection apparatus having fuel pressurizing pump39US 5,080,079 AAisin Seiki Kabushiki Kaisha · 1992
- Dual fuel injection system for two stroke internal combustion engine37US 4,779,581 AOutboard Marine Corporation · 1988
- Direct fuel injected engines37US 4,790,270 AOrbital Engine Company Proprietary Limited · 1988
- Two-cycle utility internal combustion engine37US 5,438,968 ABKM, Inc. · 1995