F01L 7/026
With two or more rotary valves, their rotational axes being parallel
Official title: {with two or more rotary valves, their rotational axes being parallel, e.g. 4-stroke}
F01L7/026 (With two or more rotary valves, their rotational axes being parallel) appears on 118 US grants and 74 published applications in this corpus.
Search patents in F01L- Granted patents
- 118
- Published applications
- 74
- Assignees
- 27
- Inventors
- 107
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 5 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 5 | 4 |
| 2003 | 3 | 3 |
| 2004 | 5 | 4 |
| 2005 | 1 | 2 |
| 2006 | 3 | 5 |
| 2007 | 1 | 15 |
| 2008 | 9 | 6 |
| 2009 | 5 | 1 |
| 2010 | 5 | 2 |
| 2011 | 3 | 1 |
| 2012 | 1 | 1 |
| 2013 | 3 | 3 |
| 2014 | 2 | 1 |
| 2015 | 1 | 2 |
| 2016 | 1 | 3 |
| 2017 | 0 | 4 |
| 2018 | 4 | 2 |
| 2019 | 3 | 2 |
| 2020 | 3 | 3 |
| 2021 | 0 | 2 |
| 2022 | 8 | 4 |
| 2023 | 2 | 0 |
| 2024 | 0 | 1 |
| 2025 | 3 | 2 |
By publication year. Applications have been published since 2001.
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
- Independent rotary valve engine22 Jul 2025US 12,366,183 B1King Fahd University of Petroleum and Minerals
- Internal combustion engine valve system and method11 Apr 2023US 11,624,300 B2
- Internal combustion engine valve system and method10 Jan 2023US 11,549,409 B2
- 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
- Distribution cylinder20 Jun 2024US 2024/0200519 A1
- Internal combustion engine valve system and method24 Nov 2022US 2022/0372897 A1Lse R&D Engineering Limited
- Internal combustion engine valve system and method17 Nov 2022US 2022/0364484 A1Lse R&D Engineering Limited
Most cited
By later US patents
- Stratified charge engine49US 3,948,227 A1976
- Internal combustion engine intake and exhaust valve control apparatus46US 4,976,227 A1990
- Rotary valve for internal combustion engine45US 5,205,251 AIbex Technologies Ltd. · 1993
- Spherical rotary valve assembly for an internal combustion engine41US 4,944,261 A1990
- Stratified charge engine38US 4,036,184 ADana Corporation · 1977