H01F 27/341
Preventing or reducing no-load losses or reactive currents
Official title: {Preventing or reducing no-load losses or reactive currents}
H01F27/341 (Preventing or reducing no-load losses or reactive currents) appears on 30 US grants and 37 published applications in this corpus.
Search patents in H01F- Granted patents
- 30
- Published applications
- 37
- Assignees
- 28
- Inventors
- 64
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 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 | 1 |
| 2003 | 2 | 3 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 2 | 1 |
| 2007 | 2 | 1 |
| 2008 | 0 | 3 |
| 2009 | 2 | 0 |
| 2010 | 2 | 2 |
| 2011 | 1 | 1 |
| 2012 | 0 | 2 |
| 2013 | 0 | 0 |
| 2014 | 1 | 2 |
| 2015 | 3 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 2 |
| 2018 | 3 | 3 |
| 2019 | 5 | 4 |
| 2020 | 0 | 2 |
| 2021 | 0 | 2 |
| 2022 | 0 | 2 |
| 2023 | 2 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Alternating current quantum magnetic transformer and related energy saving device and methods28 Apr 2026US 12,614,662 B1Harmonify AB
- Coil device4 Nov 2025US 12,462,965 B2TDK Corporation
- Transformer with flux linkage control and method for suppressing magnetizing inrush current of transformer22 Aug 2023US 11,735,903 B2Xi' An Jiaotong University
- Coil component18 Jul 2023US 11,705,273 B2Murata Manufacturing Co., Ltd.
- Inductor component and method of manufacturing same26 Nov 2019US 10,490,338 B2Murata Manufacturing Co., Ltd.
- Hysteretance component and application method thereof15 May 2025US 2025/0157726 A1Southeast University
- Elecromagnetic component with reduced parasitic capacitance induced loss28 Nov 2024US 2024/0395455 A1Resonant Link, Inc.
- Power generating transformer system (pgts), a power factor correction method in pgts, a pgts functioning also as power supply, and block diagrams of pgts7 Sep 2023US 2023/0282412 A1Phasetown, LLC
- Planar transformer with reduced parasitic losses15 Dec 2022US 2022/0399154 A1Wall Box Chargers S. L.
- Transformer with flux linkage control and method for suppressing magnetizing inrush current of transformer25 Aug 2022US 2022/0271526 A1Xi'an Jiotong University
Most cited
By later US patents
- Planar transformer power supply266US 7,502,234 B2Aaron Medical Industries, Inc. · 2009
- Systems and methods for providing voltage regulation externally to a power transformer41US 6,545,453 B2ABB AB · 2003
- Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components25US 6,549,431 B2Power Integrations, Inc. · 2003
- Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components12US 7,164,338 B2Power Integrations, Inc. · 2007
- Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components9US 6,762,946 B2Power Integrations, Inc. · 2004