H01F 7/04
Means for releasing the attractive force
H01F7/04 (Means for releasing the attractive force) appears on 255 US grants and 271 published applications in this corpus.
Search patents in H01F- Granted patents
- 255
- Published applications
- 271
- Assignees
- 146
- Inventors
- 471
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 2 |
| 2003 | 2 | 0 |
| 2004 | 1 | 3 |
| 2005 | 0 | 2 |
| 2006 | 3 | 9 |
| 2007 | 2 | 2 |
| 2008 | 1 | 2 |
| 2009 | 1 | 7 |
| 2010 | 5 | 6 |
| 2011 | 5 | 6 |
| 2012 | 10 | 19 |
| 2013 | 13 | 11 |
| 2014 | 10 | 10 |
| 2015 | 10 | 15 |
| 2016 | 8 | 14 |
| 2017 | 21 | 15 |
| 2018 | 7 | 10 |
| 2019 | 13 | 12 |
| 2020 | 10 | 21 |
| 2021 | 13 | 25 |
| 2022 | 16 | 14 |
| 2023 | 20 | 21 |
| 2024 | 22 | 22 |
| 2025 | 17 | 13 |
| 2026 | 8 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rotating magnet assembly in a foldable device25 Aug 2026US 12,717,385 B2Microsoft Technology Licensing, LLC
- Magnetic systems incorporating electropermanent magnet arrays18 Aug 2026US 12,712,104 B2Apple Inc.
- Switchable magnetic apparatus with reduced switching force and methods thereof11 Aug 2026US 12,706,236 B2Lantha Tech Ltd.
- Adjustment of magnetic force in a computing device14 Apr 2026US 12,602,089 B2Intel Corporation
- Magnetic coupling device7 Apr 2026US 12,597,544 B2Magswitch Automation Company
- Variable field magnetic couplers and methods for engaging a ferromagnetic workpiece27 Aug 2026US 2026/0253824 A1Magswitch Automation Company
- Magnetic clamping device20 Aug 2026US 2026/0241625 A1Kosmek Ltd.
- Switchable magnetic filter16 Jul 2026US 2026/0199906 A1Taco, Inc.
- Magnetic coupling device25 Jun 2026US 2026/0175337 A1Magswitch Automation Company
- Magnetic coupling device with movable workpiece interfaces18 Jun 2026US 2026/0166754 A1Magswitch Automation Company
Most cited
By later US patents
- Electronic device having magnetic latching mechanism143US 7,583,500 B2Apple Inc. · 2009
- Electronic device with magnetic attachment120US 8,143,983 B1Apple Inc. · 2012
- Protective cover for a tablet computer111US 8,344,836 B2Apple Inc. · 2013
- Magnetic base86US 4,251,791 AKanetsu Kogyo Kabushiki Kaisha · 1981
- Cover for an electric device80US 8,395,465 B2Apple Inc. · 2013