H01F 7/1646
Armatures or stationary parts of magnetic circuit having permanent magnet
Official title: {Armatures or stationary parts of magnetic circuit having permanent magnet}
H01F7/1646 (Armatures or stationary parts of magnetic circuit having permanent magnet) appears on 244 US grants and 212 published applications in this corpus.
Search patents in H01F- Granted patents
- 244
- Published applications
- 212
- Assignees
- 190
- Inventors
- 580
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 7 | 0 |
| 1989 | 8 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 8 | 0 |
| 1993 | 5 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 4 | 0 |
| 2003 | 1 | 2 |
| 2004 | 1 | 4 |
| 2005 | 3 | 6 |
| 2006 | 6 | 5 |
| 2007 | 2 | 5 |
| 2008 | 4 | 9 |
| 2009 | 2 | 8 |
| 2010 | 3 | 9 |
| 2011 | 5 | 8 |
| 2012 | 12 | 7 |
| 2013 | 9 | 14 |
| 2014 | 4 | 7 |
| 2015 | 6 | 9 |
| 2016 | 8 | 8 |
| 2017 | 10 | 19 |
| 2018 | 10 | 12 |
| 2019 | 13 | 20 |
| 2020 | 11 | 12 |
| 2021 | 17 | 10 |
| 2022 | 11 | 7 |
| 2023 | 8 | 11 |
| 2024 | 8 | 9 |
| 2025 | 8 | 7 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Electromagnetic excitation system, electromagnetic brake or clutch and method for producing an electromagnetic excitation system11 Jun 2026US 2026/0162863 A1Kendrion (Villingen) GmbH
- Actuator device14 May 2026US 2026/0136102 A1LG Innotek Co., Ltd.
- Electromagnetic actuator system26 Mar 2026US 2026/0088204 A1Apple Inc.
- Magnetic actuating device11 Dec 2025US 2025/0376996 A1Nakanishi Jaeger GmbH
Most cited
By later US patents
- Actuator145US 5,256,998 ATechnische Entwicklungen Dr. Becker GmbH · 1993
- Magnetic flux-shifting fluid valve108US 4,403,765 A1983
- Variable lift operation of bistable electromechanical poppet valve actuator104US 4,829,947 AGeneral Motors Corporation · 1989
- Electromagnetic valve actuator103US 4,794,890 AMagnavox Government and Industrial Electronics Company · 1989
- Moving-coil haptic actuator for electronic devices81US 10,032,550 B1Apple Inc. · 2018