H01F 7/10
Specially adapted for alternating current
Official title: specially adapted for alternating current
H01F7/10 (Specially adapted for alternating current) appears on 64 US grants and 40 published applications in this corpus.
Search patents in H01F- Granted patents
- 64
- Published applications
- 40
- Assignees
- 48
- Inventors
- 147
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 4 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 2 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 3 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 1 | 1 |
| 2013 | 3 | 2 |
| 2014 | 0 | 2 |
| 2015 | 1 | 3 |
| 2016 | 2 | 1 |
| 2017 | 4 | 4 |
| 2018 | 2 | 2 |
| 2019 | 5 | 1 |
| 2020 | 0 | 1 |
| 2021 | 1 | 4 |
| 2022 | 0 | 7 |
| 2023 | 2 | 2 |
| 2024 | 4 | 0 |
| 2025 | 5 | 2 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Force-producing electromagnetic actuator30 Dec 2025US 12,512,742 B2Dp World Logistics US Holdings, Inc.
- Drive coil device16 Dec 2025US 12,500,502 B2Sysko AG Systeme & Komponenten
- Solenoid systems and methods for achieving lower cost8 Jul 2025US 12,354,795 B2Tyco Fire & Security GmbH
- System, electromagnetic actuator and track for braking8 Jul 2025US 12,355,325 B2Hyperloop Technologies, Inc.
- Substrate processing apparatus21 Jan 2025US 12,206,342 B2Brooks Automation US, LLC
- Drive coil device9 Oct 2025US 2025/0317042 A1Sysko AG Systeme & Komponenten
- Hybrid electromechanical transformer13 Mar 2025US 2025/0089572 A1
- Solenoid systems and methods for achieving lower cost12 Oct 2023US 2023/0326643 A1Tyco Fire & Security GmbH
- Substrate processing apparatus11 May 2023US 2023/0143307 A1Brooks Automation US, LLC
- Tattoo machine22 Dec 2022US 2022/0401716 A1
Most cited
By later US patents
- Polarized magnetic actuators for haptic response37US 9,928,950 B2Apple Inc. · 2018
- Encapsulated solenoid26US 4,087,773 ADetroit Coil Company · 1978
- Electromagnet for electric switching device22US 4,577,174 ASquare D Starkstrom GmbH · 1986
- AC Solenoid apparatus of the armature in tube type18US 4,290,039 AKabushiki Kaisha Fujikoshi · 1981
- Alignment means for a moveable pole-plunger assembly17US 4,100,519 AMAC Valves, Inc. · 1978