H01F 7/064
Circuit arrangements for actuating electromagnets
Official title: {Circuit arrangements for actuating electromagnets (circuit arrangements for obtaining special operating characteristics H01F7/18; driving circuits for electromagnets making use of a switching regulator H01H47/325)}
H01F7/064 (Circuit arrangements for actuating electromagnets) appears on 561 US grants and 643 published applications in this corpus.
Search patents in H01F- Granted patents
- 561
- Published applications
- 643
- Assignees
- 413
- Inventors
- 1,344
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 3 |
| 2009 | 0 | 1 |
| 2010 | 1 | 2 |
| 2011 | 1 | 3 |
| 2012 | 1 | 5 |
| 2013 | 1 | 7 |
| 2014 | 4 | 9 |
| 2015 | 13 | 32 |
| 2016 | 15 | 34 |
| 2017 | 30 | 75 |
| 2018 | 40 | 46 |
| 2019 | 72 | 61 |
| 2020 | 65 | 59 |
| 2021 | 41 | 72 |
| 2022 | 72 | 60 |
| 2023 | 52 | 49 |
| 2024 | 48 | 50 |
| 2025 | 50 | 46 |
| 2026 | 28 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Alignment for wireless power transfer using electromagnets6 Oct 2026US 12,756,244 B2Dolby Intellectual Property Licensing, LLC
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- Method and system for poling a ferroelectric medium22 Sep 2026US 12,744,145 B2Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Methods and systems for magnetic shielded transmitter system15 Sep 2026US 12,738,403 B2
- 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
- Magnetic array, methods of controlling magnetic array, and recording media17 Sep 2026US 2026/0279422 A1TDK Corporation
- Conformal Thrust Generation by Strong Binding Energy Release in Quantum Capillary Lattices17 Sep 2026US 2026/0280451 A1
Most cited
By later US patents
- Electronic lighting device and method for manufacturing same119US 8,789,986 B22014
- Methods and apparatus for magnetic field shimming115US 10,145,913 B2Hyperfine Research, Inc. · 2018
- Magnetic stimulation methods and devices for therapeutic treatments92US 9,586,057 B2BTL Holdings Limited · 2017
- Electronic lighting device and method for manufacturing same89US 8,926,137 B2Shenzhen Liown Electronics Company Ltd. · 2015
- Moving-coil haptic actuator for electronic devices81US 10,032,550 B1Apple Inc. · 2018