F16D 2121/20
Using electromagnets
Official title: using electromagnets
F16D2121/20 (Using electromagnets) appears on 787 US grants and 681 published applications in this corpus.
Search patents in F16D- Granted patents
- 787
- Published applications
- 681
- Assignees
- 430
- Inventors
- 1,698
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 11 | 0 |
| 1978 | 10 | 0 |
| 1979 | 13 | 0 |
| 1980 | 14 | 0 |
| 1981 | 7 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 4 | 0 |
| 1985 | 7 | 0 |
| 1986 | 11 | 0 |
| 1987 | 2 | 0 |
| 1988 | 9 | 0 |
| 1989 | 11 | 0 |
| 1990 | 7 | 0 |
| 1991 | 7 | 0 |
| 1992 | 12 | 0 |
| 1993 | 14 | 0 |
| 1994 | 8 | 0 |
| 1995 | 12 | 0 |
| 1996 | 7 | 0 |
| 1997 | 12 | 0 |
| 1998 | 16 | 0 |
| 1999 | 16 | 0 |
| 2000 | 18 | 0 |
| 2001 | 19 | 2 |
| 2002 | 12 | 9 |
| 2003 | 10 | 10 |
| 2004 | 9 | 13 |
| 2005 | 6 | 14 |
| 2006 | 17 | 22 |
| 2007 | 4 | 18 |
| 2008 | 6 | 18 |
| 2009 | 6 | 12 |
| 2010 | 12 | 34 |
| 2011 | 17 | 14 |
| 2012 | 18 | 16 |
| 2013 | 16 | 16 |
| 2014 | 18 | 18 |
| 2015 | 14 | 31 |
| 2016 | 18 | 25 |
| 2017 | 25 | 39 |
| 2018 | 21 | 31 |
| 2019 | 36 | 46 |
| 2020 | 32 | 63 |
| 2021 | 43 | 47 |
| 2022 | 46 | 50 |
| 2023 | 36 | 37 |
| 2024 | 43 | 38 |
| 2025 | 43 | 36 |
| 2026 | 17 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Warped rotor detection6 Oct 2026US 12,752,763 B2Rivian IP Holdings, LLC
- Method for checking the functionality of an actuating unit, and actuating unit6 Oct 2026US 12,752,764 B2AUMOVIO Germany GmbH
- Brake control device and motor drive device29 Sep 2026US 12,747,766 B2Fanuc Corporation
- Surgical robot with secondary brake release for user actuation15 Sep 2026US 12,735,016 B2Auris Health, Inc.
- Scissor lift descent control systems and methods18 Aug 2026US 12,709,530 B2Oshkosh Corporation
- Tunable Lens with Actuator Brakes3 Sep 2026US 2026/0259401 A1Apple Inc.
- Magnetic Braking and Speed Control System for Walker30 Jul 2026US 2026/0218762 A1
- Dynamically Engageable Electromechanical Brake30 Jul 2026US 2026/0218763 A1Halliburton Energy Services.Inc.
- Electromagnetic brake or clutch18 Jun 2026US 2026/0168546 A1Kendrion (Villingen) GmbH
- Electromagnetic excitation system, electromagnetic brake or clutch and method for producing an electromagnetic excitation system11 Jun 2026US 2026/0162863 A1Kendrion (Villingen) GmbH
Most cited
By later US patents
- Harmonic electric actuator111US 4,398,110 AWestinghouse Electric Corp. · 1983
- Systems and methods for providing a haptic device101US 8,002,089 B2Immersion Corporation · 2011
- Motor saw brake92US 4,757,881 AAktiebolaget Electrolux · 1988
- Controllable brake83US 5,842,547 ALord Corporation · 1998
- Brake control for rotary electric tools81US 4,029,159 A1977