F01L 2820/03
Auxiliary actuators
F01L2820/03 (Auxiliary actuators) appears on 769 US grants and 791 published applications in this corpus.
Search patents in F01L- Granted patents
- 769
- Published applications
- 791
- Assignees
- 181
- Inventors
- 1,191
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 7 | 0 |
| 1997 | 10 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 6 | 0 |
| 2001 | 8 | 2 |
| 2002 | 5 | 1 |
| 2003 | 2 | 6 |
| 2004 | 5 | 12 |
| 2005 | 15 | 31 |
| 2006 | 20 | 41 |
| 2007 | 31 | 73 |
| 2008 | 47 | 37 |
| 2009 | 37 | 48 |
| 2010 | 32 | 39 |
| 2011 | 35 | 26 |
| 2012 | 30 | 26 |
| 2013 | 17 | 34 |
| 2014 | 34 | 44 |
| 2015 | 43 | 25 |
| 2016 | 20 | 45 |
| 2017 | 43 | 43 |
| 2018 | 31 | 35 |
| 2019 | 36 | 47 |
| 2020 | 49 | 49 |
| 2021 | 35 | 43 |
| 2022 | 40 | 41 |
| 2023 | 36 | 14 |
| 2024 | 27 | 16 |
| 2025 | 11 | 10 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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.
- Backside emitter solar cell structure having a heterojunction24 Feb 2026US 12,563,844 B2Meyer Burger (Germany) GmbH
- Control valve assembly of a variable cam timing phaser6 Jan 2026US 12,516,615 B2Borg-Warner Corporation
- Carrier-less spring loaded planetary gearset used with evct6 Aug 2026US 2026/0226852 A1BorgWarner Inc.
- Valve open and close period control device29 Jan 2026US 2026/0028922 A1Aisin Corporation
- Method for starting an internal combustion engine comprising a camshaft associated with an electric variable valve timing device29 Jan 2026US 2026/0028940 A1Schaeffler Technologies AG & Co. KG
- Switchable rocker arm18 Dec 2025US 2025/0382904 A1Eaton Intelligent Power Limited
- Valve opening-closing timing control device25 Sep 2025US 2025/0297560 A1Aisin Corporation
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
- Dual-acting apparatus for variable valve timing and the like87US 5,417,186 AClemson University · 1995
- Engine valve control mechanism78US 4,762,096 AEaton Corporation · 1988