F01L 2820/031
Electromagnets
F01L2820/031 (Electromagnets) appears on 229 US grants and 201 published applications in this corpus.
Search patents in F01L- Granted patents
- 229
- Published applications
- 201
- Assignees
- 80
- Inventors
- 424
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 2 |
| 2002 | 4 | 1 |
| 2003 | 1 | 3 |
| 2004 | 4 | 4 |
| 2005 | 6 | 3 |
| 2006 | 1 | 2 |
| 2007 | 1 | 7 |
| 2008 | 5 | 4 |
| 2009 | 4 | 3 |
| 2010 | 0 | 12 |
| 2011 | 4 | 11 |
| 2012 | 13 | 5 |
| 2013 | 9 | 13 |
| 2014 | 9 | 18 |
| 2015 | 13 | 9 |
| 2016 | 10 | 14 |
| 2017 | 16 | 18 |
| 2018 | 8 | 6 |
| 2019 | 12 | 8 |
| 2020 | 10 | 14 |
| 2021 | 11 | 18 |
| 2022 | 13 | 12 |
| 2023 | 11 | 5 |
| 2024 | 8 | 4 |
| 2025 | 4 | 5 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Control device for hydraulic control valve28 Apr 2026US 12,612,912 B2Hitachi Astemo, Ltd.
- Rocker with switchable rollers for engine valvetrains23 Sep 2025US 12,421,876 B2Eaton Intelligent Power Limited
- Variable valve device9 Sep 2025US 12,410,734 B2Suzuki Motor Corporation
- Shift gate, sliding cam system and camshaft20 May 2025US 12,305,543 B2thyssenkrupp AG
- Multi-cylinder internal combustion engine, with cylinders equipped with intake valve variable actuation systems having hydraulic circuits which cross each other11 Mar 2025US 12,247,502 B2C. R. F. Societa Consortile per Azioni
- A phase change system for opening and/or closing intake valves8 May 2025US 2025/0146429 A1PIAGGIO & C. S. p. A.
- Variable valve device3 Apr 2025US 2025/0109698 A1Suzuki Motor Corporation
- Control Device for Hydraulic Control Valve27 Mar 2025US 2025/0101979 A1Hitachi Astemo, Ltd.
- Rocker with Switchable Rollers for Engine Valvetrains20 Feb 2025US 2025/0059898 A1Eaton Intelligent Power Limited
- Multi-cylinder internal combustion engine, with cylinders equipped with intake valve variable actuation systems having hydraulic circuits which cross each other16 Jan 2025US 2025/0020072 A1C. R. F. Societa Consortile per Azioni
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
- Engine valve control mechanism78US 4,762,096 AEaton Corporation · 1988
- Valve control system67US 5,660,153 AEaton Corporation · 1997