H01F 2007/085
Yoke or polar piece between coil bobbin and armature having a gap
Official title: {Yoke or polar piece between coil bobbin and armature having a gap, e.g. filled with nonmagnetic material}
H01F2007/085 (Yoke or polar piece between coil bobbin and armature having a gap) appears on 124 US grants and 138 published applications in this corpus.
Search patents in H01F- Granted patents
- 124
- Published applications
- 138
- Assignees
- 70
- Inventors
- 283
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 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 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 2 |
| 2007 | 0 | 2 |
| 2008 | 2 | 3 |
| 2009 | 0 | 8 |
| 2010 | 1 | 7 |
| 2011 | 3 | 14 |
| 2012 | 7 | 3 |
| 2013 | 8 | 2 |
| 2014 | 7 | 11 |
| 2015 | 5 | 6 |
| 2016 | 4 | 6 |
| 2017 | 4 | 7 |
| 2018 | 6 | 4 |
| 2019 | 5 | 8 |
| 2020 | 5 | 16 |
| 2021 | 10 | 13 |
| 2022 | 12 | 10 |
| 2023 | 5 | 7 |
| 2024 | 7 | 3 |
| 2025 | 4 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Solenoid, damping force adjustment mechanism, and damping force adjustable shock absorber17 Mar 2026US 12,580,113 B2Hitachi Astemo, Ltd.
- Electromagnetic actuating device and camshaft adjuster with an electromagnetic actuating device27 Jan 2026US 12,537,124 B2Schaeffler Technologies AG & Co. KG
- Method and apparatus having a single coil with embedded magnets9 Sep 2025US 12,412,691 B2G. W. Lisk Company, Inc.
- Valve driving device and shock absorber using the same24 Jun 2025US 12,338,874 B2Hitachi Astemo, Ltd.
- Solenoid actuator and method for manufacturing solenoid actuator27 May 2025US 12,315,673 B2Mikuni Corporation
- Hydraulic core tube for a solenoid valve arrangement6 Aug 2026US 2026/0226996 A1
- Solenoid actuator and method for making the same4 Jun 2026US 2026/0155288 A1Chia Wang Oil Hydraulic Industrial Co., Ltd.
- Magnetic actuator device, magnetic actuator for hydrogen gas applications, and production method25 Sep 2025US 2025/0299862 A1ETO Magnetic GmbH
- Method for producing a magnetically separate core tube and magnetic-armature device with the core tube4 Sep 2025US 2025/0279237 A1ETO Magnetic GmbH
- Solenoid actuator and method for making the same18 Jul 2024US 2024/0242868 A1Chia Wang Oil Hydraulic Industrial Co., Ltd.
Most cited
By later US patents
- Bistable solenoid valve53US 5,599,003 AInterelektrik Ges. m.b.H. & Co. KG · 1997
- Solenoid construction and method for making the same36US 4,604,600 AG. W. Lisk Company, Inc. · 1986
- Electromagnetically controlled operating device in particular for valves and electrohydraulic applications36US 5,509,439 AAtos S.p.A. · 1996
- Method and apparatus for a solenoid assembly33US 6,615,780 B1Delphi Technologies, Inc. · 2003
- Electromagnet for solenoid valves and method of manufacturing same28US 5,050,840 ASanmeidenki Kabushikikaisha · 1991