H01F 7/1623
Armatures having t-form
Official title: {Armatures having T-form}
H01F7/1623 (Armatures having t-form) appears on 43 US grants and 49 published applications in this corpus.
Search patents in H01F- Granted patents
- 43
- Published applications
- 49
- Assignees
- 40
- Inventors
- 118
- Latest grant
- 12 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 3 |
| 2004 | 2 | 2 |
| 2005 | 1 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 4 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 8 |
| 2011 | 2 | 2 |
| 2012 | 3 | 2 |
| 2013 | 2 | 1 |
| 2014 | 2 | 1 |
| 2015 | 2 | 3 |
| 2016 | 4 | 4 |
| 2017 | 1 | 2 |
| 2018 | 2 | 1 |
| 2019 | 1 | 3 |
| 2020 | 3 | 3 |
| 2021 | 3 | 2 |
| 2022 | 2 | 4 |
| 2023 | 2 | 0 |
| 2024 | 2 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Electrically driven fastener structure and method of use thereof12 Aug 2025US 12,387,863 B2Fivegrand International Co., Ltd.
- Push-pull solenoid11 Jun 2024US 12,009,149 B2Harmonic Drive Systems Inc.
- Electromagnetic drive unit for a switching device and switching device19 Mar 2024US 11,935,715 B2Eaton Intelligent Power Limited
- Solenoid apparatus and methods of assembly8 Aug 2023US 11,721,465 B2Rain Bird Corporation
- Solenoid valve with permanent magnets11 Jul 2023US 11,698,143 B2Marotta Controls, Inc.
- Push-pull solenoid24 Nov 2022US 2022/0375670 A1Harmonic Drive Systems Inc.
- Electrically driven fastener structure and method of use thereof13 Oct 2022US 2022/0328228 A1Fivegrand International Co., Ltd.
- Solenoid Valve With Permanent Magnets15 Sep 2022US 2022/0290773 A1Marotta Controls, Inc.
- Electromagnetic drive unit for a switching device and switching device10 Feb 2022US 2022/0044898 A1Eaton Intelligent Power Limited
- Levitation & propulsion unit two (lpu-2)11 Nov 2021US 2021/0347503 A1
Most cited
By later US patents
- Electromagnetic switching device26US 5,959,519 ASiemens Aktiengesellschaft · 1999
- Electromagnet and actuating mechanism for switch device, using thereof21US 6,816,048 B2Hitachi Engineering & Services Co., Ltd. · 2004
- Pressure balance of automotive air bypass valve15US 8,348,231 B2Continental Automotive Systems US, Inc. · 2013
- Permanent-magnet magnetic actuator of reduced volume10US 8,013,698 B2Areva T&D SA · 2011
- Method and device for operating a switching device10US 8,159,807 B2Siemens Aktiengesellschaft · 2012