F01L 1/30
Valve-gear or valve arrangements: characterised by the provision of positively opened and
Official title: characterised by the provision of positively opened and closed valves, i.e. desmodromic valves
F01L1/30 (Valve-gear or valve arrangements: characterised by the provision of positively opened and) appears on 118 US grants and 79 published applications in this corpus.
Search patents in F01L- Granted patents
- 118
- Published applications
- 79
- Assignees
- 43
- Inventors
- 156
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 6 |
| 2003 | 3 | 5 |
| 2004 | 5 | 7 |
| 2005 | 8 | 7 |
| 2006 | 5 | 2 |
| 2007 | 3 | 3 |
| 2008 | 4 | 6 |
| 2009 | 1 | 6 |
| 2010 | 4 | 2 |
| 2011 | 4 | 3 |
| 2012 | 2 | 3 |
| 2013 | 1 | 3 |
| 2014 | 4 | 3 |
| 2015 | 2 | 6 |
| 2016 | 8 | 4 |
| 2017 | 2 | 1 |
| 2018 | 2 | 1 |
| 2019 | 3 | 2 |
| 2020 | 0 | 2 |
| 2021 | 5 | 1 |
| 2022 | 3 | 3 |
| 2023 | 2 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Engine valve control system and method24 Mar 2026US 12,584,425 B1
- No lash dual stem I.C.E. valve7 Oct 2025US 12,435,650 B2
- Engine valve actuation17 Oct 2023US 11,788,442 B2Jaguar Land Rover Limited
- Intake valve systems28 Mar 2023US 11,614,006 B1Southwest Research Institute
- Engine valve actuation27 Sep 2022US 11,454,143 B2Jaguar Land Rover Limited
- Apparatus comprising a plurality of tools each having at least one hydraulic chamber for hydraulic liquid29 Jan 2026US 2026/0028923 A1Freevalve AB
- No Lash Dual Stem I.C.E. valve30 Jan 2025US 2025/0035016 A1
- Engine valve actuation8 Dec 2022US 2022/0389845 A1Jaguar Land Rover Limited
- Engine valve actuation3 Mar 2022US 2022/0065139 A1Jaguar Land Rover Limited
- Valve timing adjusting device24 Feb 2022US 2022/0056820 A1Denso Corporation
Most cited
By later US patents
- Method and apparatus for electrically driving engine valves95US 5,327,856 AGeneral Motors Corporation · 1994
- Variable valve timing for four-stroke engines57US 4,572,118 A1986
- Valve operation stopping means for multi-cylinder engine55US 4,576,128 AHonda Giken Kogyo Kabushiki Kaisha · 1986
- Electromechanical valve drive incorporating a nonlinear mechanical transformer51US 6,755,166 B2Massachusetts Institute of Technology · 2004
- Intake and exhaust valve system for internal combustion engine37US 4,530,318 A1985