H01F 7/123
By ancillary coil
Official title: by ancillary coil
H01F7/123 (By ancillary coil) appears on 53 US grants and 27 published applications in this corpus.
Search patents in H01F- Granted patents
- 53
- Published applications
- 27
- Assignees
- 38
- Inventors
- 108
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 0 |
| 2002 | 1 | 3 |
| 2003 | 4 | 1 |
| 2004 | 2 | 0 |
| 2005 | 0 | 6 |
| 2006 | 1 | 2 |
| 2007 | 3 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 3 | 3 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 3 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 3 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 2 |
| 2020 | 1 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Magnetic release mechanism21 Oct 2025US 12,451,279 B2Ashored Inc.
- Actuator, remote triggering device, governor assembly and elevator13 Dec 2022US 11,524,871 B2Otis Elevator Company
- Control method of an electromagnetic brake with a controllable armature disc movement23 Feb 2021US 10,927,907 B2Chr.Mayr GmbH + Co. KG
- Vacuum circuit interrupter with actuation having active damping3 Mar 2020US 10,580,599 B1Eaton Intelligent Power Limited
- Solenoid device and image forming apparatus therewith31 Jul 2018US 10,035,675 B2KYOCERA Document Solutions Inc.
- Camera module and electronic device comprising same4 Jul 2024US 2024/0223900 A1Samsung Electronics Co., Ltd.
- Magnetic release mechanism30 Nov 2023US 2023/0386716 A1Ashored Inc.
- Vacuum Circuit Interrupter with Actuation Having Active Damping27 Feb 2020US 2020/0066468 A1Eaton Intelligent Power Limited
- Control Method of an Electromagnetic Brake with a Controllable Armature Disc Movement25 Jul 2019US 2019/0226537 A1Chr.Mayr GmbH + Co. KG
- Actuator, remote triggering device, governor assembly and elevator2 May 2019US 2019/0127179 A1Otis Elevator Company
Most cited
By later US patents
- Method of identifying the impact of an armature onto an electromagnet on an electromagnetic switching arrangement85US 5,708,355 AFEV Motorentechnik GmbH · 1998
- Method of operating an electromagnetic actuator by affecting the coil current during armature motion60US 5,905,625 AFEV Motorentechnik GmbH · 1999
- Method for controlling velocity of an armature of an electromagnetic actuator45US 5,991,143 ASiemens Automotive Corporation · 1999
- Electronic solenoid control apparatus and method with hall effect technology37US 5,523,684 ACaterpillar Inc. · 1996
- Magnetic drives27US 6,598,621 B1Camcon Ltd. · 2003