F02B 75/34
Ultra-small engines
Official title: Ultra-small engines, e.g. for driving models
F02B75/34 (Ultra-small engines) appears on 189 US grants and 65 published applications in this corpus.
Search patents in F02B- Granted patents
- 189
- Published applications
- 65
- Assignees
- 54
- Inventors
- 223
- Latest grant
- 15 Aug 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 8 | 0 |
| 1978 | 8 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 8 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 7 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 9 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 3 | 0 |
| 1998 | 7 | 0 |
| 1999 | 8 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 1 |
| 2002 | 8 | 10 |
| 2003 | 5 | 11 |
| 2004 | 9 | 6 |
| 2005 | 6 | 8 |
| 2006 | 5 | 4 |
| 2007 | 2 | 3 |
| 2008 | 3 | 4 |
| 2009 | 1 | 1 |
| 2010 | 4 | 3 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 2 | 1 |
| 2014 | 1 | 0 |
| 2015 | 4 | 2 |
| 2016 | 0 | 2 |
| 2017 | 2 | 3 |
| 2018 | 1 | 3 |
| 2019 | 1 | 1 |
| 2020 | 2 | 0 |
| 2021 | 1 | 0 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Passive microfluidic valves15 Aug 2023US 11,725,749 B2The Regents of the University of California
- Revolving speed variable voltage power supply for glow plug of two-stroke or four-stroke gasoline engine23 Aug 2022US 11,421,643 B1
- Vertical lift by series hybrid-propulsion26 Jan 2021US 10,899,461 B2Aurora Flight Sciences Corporation
- Adjustable offset mount (AOM) for engines of model airplanes23 Jun 2020US 10,689,124 B2
- Propeller and aerial vehicle, containing locking device12 May 2020US 10,647,409 B2Sz Dji Technology Co., Ltd.
- Passive microfluidic valves5 May 2022US 2022/0136618 A1The Regents of the University of California
- Adjustable offset mount (AOM) for engines of model airplanes21 Feb 2019US 2019/0055027 A1
- Engine operable in horizontal and vertical shaft orientations27 Dec 2018US 2018/0371990 A1Briggs & Stratton Corporation
- Gasoline Engine with Glow Plug Heater for a Model Car27 Sep 2018US 2018/0274438 A1Golden Lion Enterprise Co., Ltd.
- Vertical Lift by Series Hybrid-Propulsion12 Jul 2018US 2018/0194484 A1Aurora Flight Sciences Corporation
Most cited
By later US patents
- Gas powered motors72US 4,449,372 A1984
- Miniature, unmanned aircraft with onboard stabilization and automated ground control of flight path64US 6,847,865 B22005
- Flying saucer toy51US 4,065,873 A1978
- Flight direction control system for blimps49US 5,906,335 A1999
- Compressed gas engine and method of operating same46US 5,309,713 A1994