Electromagnets
Official title: Electromagnets; Actuators including electromagnets {(electric coils H01F5/00; devices for holding workpieces using electric force B23Q3/15; load-engaging elements for lifting articles electromagnetically B66C1/06; electromagnetic couplings F16D27/00; magnetic brakes F16D63/002; electromagnetically operated valves F16K11/24, F16K31/00; analysing materials by magnetic means G01N27/72, G01N27/80; electromagnets for winding mechanical clocks G04C1/02; electromagnetic relays H01H51/00; windings for salient poles of dynamo-electric machines H02K3/18; electromagnets for telegraphic communication H04L; for arc lamps H05B31/28)}
H01F7/06 (Electromagnets) appears on 5,530 US grants and 4,694 published applications in this corpus.
Search patents in H01F- Granted patents
- 5,530
- Published applications
- 4,694
- Assignees
- 2,414
- Inventors
- 10,896
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 52 | 0 |
| 1977 | 49 | 0 |
| 1978 | 59 | 0 |
| 1979 | 42 | 0 |
| 1980 | 61 | 0 |
| 1981 | 59 | 0 |
| 1982 | 62 | 0 |
| 1983 | 49 | 0 |
| 1984 | 67 | 0 |
| 1985 | 88 | 0 |
| 1986 | 54 | 0 |
| 1987 | 108 | 0 |
| 1988 | 81 | 0 |
| 1989 | 92 | 0 |
| 1990 | 74 | 0 |
| 1991 | 78 | 0 |
| 1992 | 69 | 0 |
| 1993 | 55 | 0 |
| 1994 | 75 | 0 |
| 1995 | 56 | 0 |
| 1996 | 49 | 0 |
| 1997 | 59 | 0 |
| 1998 | 87 | 0 |
| 1999 | 89 | 0 |
| 2000 | 76 | 0 |
| 2001 | 74 | 26 |
| 2002 | 76 | 70 |
| 2003 | 71 | 79 |
| 2004 | 88 | 117 |
| 2005 | 91 | 108 |
| 2006 | 90 | 131 |
| 2007 | 58 | 108 |
| 2008 | 66 | 147 |
| 2009 | 70 | 149 |
| 2010 | 95 | 147 |
| 2011 | 92 | 132 |
| 2012 | 118 | 129 |
| 2013 | 131 | 165 |
| 2014 | 133 | 134 |
| 2015 | 148 | 230 |
| 2016 | 154 | 230 |
| 2017 | 206 | 278 |
| 2018 | 198 | 262 |
| 2019 | 269 | 289 |
| 2020 | 271 | 310 |
| 2021 | 233 | 298 |
| 2022 | 274 | 327 |
| 2023 | 218 | 258 |
| 2024 | 260 | 244 |
| 2025 | 244 | 185 |
| 2026 | 112 | 141 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
- H01F 7/08With armatures3,868
- H01F 7/20Without armatures1,009
- H01F 7/064Circuit arrangements for actuating electromagnets561
- H01F 7/066Electromagnets with movable winding210
- H01F 2007/062Details of terminals or connectors for electromagnetsIndexing code165
- H01F 2007/068Using printed circuit coilsIndexing code107
Recent patents
- Magnetic field nulling6 Oct 2026US 12,755,881 B2Shimadzu Corporation
- Alignment for wireless power transfer using electromagnets6 Oct 2026US 12,756,244 B2Dolby Intellectual Property Licensing, LLC
- Imaging lens module and electronic device29 Sep 2026US 12,748,341 B2Largan Precision Co., Ltd.
- Magnetic device for sorting biological objects29 Sep 2026US 12,749,606 B2Applied Cells Inc.
- Apparatus and methods for generating force in electromagnetic systems29 Sep 2026US 12,749,607 B2
- Microelectromechanical systems (mems) actuator with magnetic latching and methods for manufacturing and using the same8 Oct 2026US 2026/0307980 A1Atomic Machines, Inc.
- Pwm electromechanical valve driver with dual path current recirculation8 Oct 2026US 2026/0311921 A1Siemens Healthcare Diagnostics Inc.
- Optical element driving mechanism8 Oct 2026US 2026/0311922 A1Actutek Corporation
- Space electromagnetic field generator and freshness maintenance device using the same8 Oct 2026US 2026/0311923 A1
- Actuator arrangement and vehicle assembly with such an actuator arrangement1 Oct 2026US 2026/0302030 A1
Most cited
- Combined position sensor and magnetic motor or bearing1,212US 4,652,820 ANorth American Philips Corporation · 1987
- Force actuator with dual magnetic operation233US 5,896,076 A1999
- Mechanical locking of floor panels with vertical snap folding225US 8,353,140 B2Välinge Innovation AB · 2013
- Proportional electropneumatic solenoid-controlled valve207US 4,954,799 APuritan-Bennett Corporation · 1990
- Mechanical locking of floor panels with vertical snap folding and an installation method to connect such panels189US 8,499,521 B2Välinge Innovation AB · 2013