H01F 7/204
Circuits for energising or de-energising
Official title: {Circuits for energising or de-energising}
H01F7/204 (Circuits for energising or de-energising) appears on 21 US grants and 31 published applications in this corpus.
Search patents in H01F- Granted patents
- 21
- Published applications
- 31
- Assignees
- 27
- Inventors
- 89
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 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 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 2 |
| 2016 | 1 | 3 |
| 2017 | 3 | 3 |
| 2018 | 1 | 2 |
| 2019 | 3 | 5 |
| 2020 | 4 | 2 |
| 2021 | 1 | 0 |
| 2022 | 1 | 2 |
| 2023 | 1 | 2 |
| 2024 | 1 | 2 |
| 2025 | 1 | 3 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Actuator and optical device16 Jun 2026US 12,658,349 B2Nidec Precision Corporation
- Soft bistable magnetic actuator and fabrication method thereof, fatigue testing device and auto underwater vehicle4 Feb 2025US 12,217,909 B2City University of Hong Kong Matter Science Research Institute (Futian)
- National individual floating transport infrastructure31 Dec 2024US 12,179,603 B2Stichting Katholieke Universiteit
- Method for generating a pulsed magnetic field and associated device5 Sep 2023US 11,749,436 B2Centre National De La Recherche Scientifique
- Magnetic field generating-apparatus for biostimulation27 Sep 2022US 11,452,882 B2Sumida Corporation
- Parasitic electromagnetic field switch for sealed barrier applications7 May 2026US 2026/0128614 A1Cilag GmbH International
- Panel, fastening construction, aircraft and opening device27 Nov 2025US 2025/0364169 A1Airbus Defence and Space GmbH
- Soft bistable magnetic actuator, fatigue testing device and auto underwater vehicle15 May 2025US 2025/0157712 A1City University of Hong Kong Matter Science Research Institute (Futian)
- Magnetic field generation system16 Jan 2025US 2025/0022644 A1
- Actuator and optical device7 Nov 2024US 2024/0371558 A1Nidec Precision Corporation
Most cited
By later US patents
- High-efficiency transfer of magnetic energy5US 4,020,412 AAgence Nationale de Valorisation de la Recherche (ANVAR) · 1977
- Retractable and/or variable depression force key assemblies and methods for using the same3US 10,574,233 B2Dell Products L. P. · 2020
- Electromagnetic coil driving control device2US 10,002,699 B2Hitachi Automotive Systems, Ltd. · 2018
- High DC voltage generator2US 3,978,346 AHitachi, Ltd. · 1976
- Power transmission device1US 10,325,709 B2Sinfonia Technology Co., Ltd. · 2019