F01L 7/021
With one rotary valve
Official title: {with one rotary valve}
F01L7/021 (With one rotary valve) appears on 163 US grants and 96 published applications in this corpus.
Search patents in F01L- Granted patents
- 163
- Published applications
- 96
- Assignees
- 46
- Inventors
- 190
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 4 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 8 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 3 |
| 2004 | 4 | 6 |
| 2005 | 1 | 3 |
| 2006 | 7 | 7 |
| 2007 | 3 | 20 |
| 2008 | 10 | 11 |
| 2009 | 8 | 0 |
| 2010 | 8 | 4 |
| 2011 | 2 | 3 |
| 2012 | 2 | 3 |
| 2013 | 1 | 4 |
| 2014 | 1 | 3 |
| 2015 | 1 | 1 |
| 2016 | 1 | 2 |
| 2017 | 3 | 5 |
| 2018 | 2 | 2 |
| 2019 | 6 | 1 |
| 2020 | 2 | 4 |
| 2021 | 3 | 4 |
| 2022 | 5 | 2 |
| 2023 | 2 | 1 |
| 2024 | 1 | 2 |
| 2025 | 4 | 3 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F01L 7/024Cylindrical valves comprising radial inlet and axial outlet or axial inlet and33
- F01L 7/022Cylindrical valves having one recess communicating successively with aligned inlet and exhaust32
- F01L 7/023Cylindrical valves having a hollow or partly hollow body allowing axial inlet29
- F01L 7/025Cylindrical valves comprising radial inlet and side outlet or side inlet and15
Recent patents
- Combustion injection and control method for rotary valve engine4 Nov 2025US 12,460,563 B2King Fahd University of Petroleum and Minerals
- Fuel injected independent rotary valve engine28 Oct 2025US 12,454,899 B1King Fahd University of Petroleum and Minerals
- Engine and method of operating the same30 Sep 2025US 12,429,003 B2Alpha-Otto Technologies Inc.
- Independent rotary valve engine22 Jul 2025US 12,366,183 B1King Fahd University of Petroleum and Minerals
- Engine and method of operating the same10 Dec 2024US 12,163,480 B2Alpha-Otto Technologies Inc.
- Engine and method of operating the same1 Jan 2026US 2026/0002480 A1Alpha-Otto Technologies Inc.
- Fuel injected independent rotary valve engine30 Oct 2025US 2025/0334062 A1King Fahd University of Petroleum and Minerals
- Combustion injection and control method for rotary valve engine30 Oct 2025US 2025/0334063 A1King Fahd University of Petroleum and Minerals
- Engine and method of operating the same27 Mar 2025US 2025/0101925 A1Alpha-Otto Technologies Inc.
- Distribution cylinder20 Jun 2024US 2024/0200519 A1
Most cited
By later US patents