F01L 2820/032
Electric motors
F01L2820/032 (Electric motors) appears on 432 US grants and 475 published applications in this corpus.
Search patents in F01L- Granted patents
- 432
- Published applications
- 475
- Assignees
- 102
- Inventors
- 645
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 2 |
| 2004 | 0 | 5 |
| 2005 | 7 | 24 |
| 2006 | 15 | 37 |
| 2007 | 28 | 62 |
| 2008 | 40 | 29 |
| 2009 | 33 | 37 |
| 2010 | 27 | 20 |
| 2011 | 23 | 10 |
| 2012 | 15 | 13 |
| 2013 | 4 | 16 |
| 2014 | 16 | 22 |
| 2015 | 25 | 12 |
| 2016 | 8 | 25 |
| 2017 | 19 | 18 |
| 2018 | 18 | 21 |
| 2019 | 21 | 28 |
| 2020 | 33 | 32 |
| 2021 | 17 | 19 |
| 2022 | 24 | 24 |
| 2023 | 20 | 8 |
| 2024 | 14 | 5 |
| 2025 | 3 | 3 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Valve opening and closing timing control device2 Jun 2026US 12,644,399 B2Aisin Corporation
- Timing adjuster5 May 2026US 12,618,345 B1
- Backside emitter solar cell structure having a heterojunction24 Feb 2026US 12,563,844 B2Meyer Burger (Germany) GmbH
- Control device and control method for variable valve timing mechanism29 Jul 2025US 12,372,015 B2Hitachi Astemo, Ltd.
- Mechanical cam phasing systems and methods6 May 2025US 12,291,983 B2HUSCO Automotive Holdings LLC
- 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
- Valve opening-closing timing control device25 Sep 2025US 2025/0297560 A1Aisin Corporation
- Valve opening and closing timing control device5 Jun 2025US 2025/0179946 A1Aisin Corporation
Most cited
By later US patents
- Dual-acting apparatus for variable valve timing and the like87US 5,417,186 AClemson University · 1995
- Variable compression ratio engine74US 5,682,854 AKomatsu Ltd. · 1997
- Self-adjustable camshaft drive mechanism56US 3,978,829 ANissan Motor Co., Ltd. · 1976
- Planetary cam phaser with worm electric actuator54US 5,680,837 AGeneral Motors Corporation · 1997
- Cylinder cutoff control apparatus of internal combustion engine51US 7,146,966 B2Hitachi, Ltd. · 2006