F01L 2820/00
Details on specific features characterising valve gear arrangements
F01L2820/00 (Details on specific features characterising valve gear arrangements) appears on 1,742 US grants and 1,786 published applications in this corpus.
Search patents in F01L- Granted patents
- 1,742
- Published applications
- 1,786
- Assignees
- 403
- Inventors
- 2,868
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 7 | 0 |
| 1988 | 6 | 0 |
| 1989 | 3 | 0 |
| 1990 | 9 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 7 | 0 |
| 1994 | 13 | 0 |
| 1995 | 5 | 0 |
| 1996 | 7 | 0 |
| 1997 | 16 | 0 |
| 1998 | 5 | 0 |
| 1999 | 10 | 0 |
| 2000 | 13 | 0 |
| 2001 | 22 | 7 |
| 2002 | 23 | 22 |
| 2003 | 16 | 33 |
| 2004 | 30 | 35 |
| 2005 | 38 | 88 |
| 2006 | 66 | 83 |
| 2007 | 74 | 131 |
| 2008 | 89 | 85 |
| 2009 | 59 | 103 |
| 2010 | 68 | 82 |
| 2011 | 68 | 71 |
| 2012 | 66 | 56 |
| 2013 | 47 | 69 |
| 2014 | 67 | 75 |
| 2015 | 81 | 52 |
| 2016 | 45 | 100 |
| 2017 | 79 | 108 |
| 2018 | 80 | 101 |
| 2019 | 102 | 94 |
| 2020 | 123 | 107 |
| 2021 | 98 | 114 |
| 2022 | 87 | 84 |
| 2023 | 77 | 34 |
| 2024 | 63 | 27 |
| 2025 | 18 | 17 |
| 2026 | 13 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Variable duration valve train9 Jun 2026US 12,650,087 B1
- Valve opening and closing timing control device2 Jun 2026US 12,644,399 B2Aisin Corporation
- Timing adjuster5 May 2026US 12,618,345 B1
- Control device for hydraulic control valve28 Apr 2026US 12,612,912 B2Hitachi Astemo, Ltd.
- Sliding member and internal combustion engine7 Apr 2026US 12,595,754 B2Fukuda Metal Foil & Powder Co., Ltd.
- Method to shut down an internal combustion engine27 Aug 2026US 2026/0251095 A1Volvo Truck Corporation
- Carrier-less spring loaded planetary gearset used with evct6 Aug 2026US 2026/0226852 A1BorgWarner Inc.
- Engine comprising a camshaft timing gear30 Jul 2026US 2026/0218631 A1Lombardini S.R.L.
- System and method for distinguishing between a timing chain jump and a lock-up of an actuator in a variable valve timing device2 Jul 2026US 2026/0185468 A1Vitesco Technologies GmbH
- Method for managing a starting phase of a hybrid vehicle5 Feb 2026US 2026/0034992 A1Schaeffler Technologies AG & Co. KG
Most cited
By later US patents
- Finger follower rocker arm with engine valve deactivator136US 5,544,626 AFord Motor Company · 1996
- Engine valve control mechanism88US 4,151,817 AEaton Corporation · 1979
- Engine valve control mechanism88US 4,203,397 AEaton Corporation · 1980
- Corrosion and wear resistant alloy88US 6,702,905 B1L. E. Jones Company · 2004
- Dual-acting apparatus for variable valve timing and the like87US 5,417,186 AClemson University · 1995