H01F 7/121
Guiding or setting position of armatures
Official title: Guiding or setting position of armatures, e.g. retaining armatures in their end position
H01F7/121 (Guiding or setting position of armatures) appears on 576 US grants and 427 published applications in this corpus.
Search patents in H01F- Granted patents
- 576
- Published applications
- 427
- Assignees
- 373
- Inventors
- 1,188
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 7 | 0 |
| 1981 | 10 | 0 |
| 1982 | 8 | 0 |
| 1983 | 3 | 0 |
| 1984 | 10 | 0 |
| 1985 | 14 | 0 |
| 1986 | 4 | 0 |
| 1987 | 11 | 0 |
| 1988 | 7 | 0 |
| 1989 | 13 | 0 |
| 1990 | 9 | 0 |
| 1991 | 11 | 0 |
| 1992 | 15 | 0 |
| 1993 | 9 | 0 |
| 1994 | 9 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 14 | 0 |
| 1999 | 10 | 0 |
| 2000 | 7 | 0 |
| 2001 | 12 | 1 |
| 2002 | 10 | 8 |
| 2003 | 9 | 8 |
| 2004 | 8 | 13 |
| 2005 | 14 | 24 |
| 2006 | 15 | 25 |
| 2007 | 12 | 12 |
| 2008 | 7 | 17 |
| 2009 | 10 | 10 |
| 2010 | 8 | 8 |
| 2011 | 8 | 8 |
| 2012 | 10 | 9 |
| 2013 | 13 | 23 |
| 2014 | 9 | 12 |
| 2015 | 15 | 24 |
| 2016 | 30 | 22 |
| 2017 | 23 | 31 |
| 2018 | 18 | 18 |
| 2019 | 28 | 27 |
| 2020 | 17 | 28 |
| 2021 | 21 | 14 |
| 2022 | 24 | 32 |
| 2023 | 16 | 21 |
| 2024 | 21 | 18 |
| 2025 | 15 | 8 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electromagnetic actuator30 Jun 2026US 12,671,021 B2Mikuni Corporation
- Two direction magnetically latching solenoid for appliance door lock2 Jun 2026US 12,644,310 B2Illinois Tool Works Inc.
- Magnetic latching connector with electric unlatch12 May 2026US 12,626,848 B2Testron Corporation
- Electromagnet and method for mounting an electromagnet5 May 2026US 12,620,515 B2Pierburg GmbH
- System for controlling a superconducting coil with a magnetic persistent current switch14 Apr 2026US 12,603,205 B2Koninklijke Philips N. V.
- Solenoid actuator and solenoid valve13 Aug 2026US 2026/0235224 A1Astemo, Ltd.
- Linear vibration motor and method for manufacturing linear vibration motor21 May 2026US 2026/0142543 A1Murata Manufacturing Co., Ltd.
- Magnetic armature, electromagnetic actuator and method for producing the magnetic armature7 May 2026US 2026/0128200 A1ETO Magnetic GmbH
- Device and method for controlling movements of an object in an open- and/or closed-loop manner16 Apr 2026US 2026/0106517 A1Micro-Epsilon Messtechnik GmbH & Co.KG
- Electromagnetic actuator system26 Mar 2026US 2026/0088204 A1Apple Inc.
Most cited
By later US patents
- 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
- Mechanical locking of floor panels with vertical snap folding and an installation method to connect such panels189US 8,499,521 B2Välinge Innovation AB · 2013
- Actuator145US 5,256,998 ATechnische Entwicklungen Dr. Becker GmbH · 1993
- Mechanical locking of floor panels with vertical snap folding144US 8,544,234 B2Välinge Innovation AB · 2013