H01F 3/12
Magnetic shunt paths
H01F3/12 (Magnetic shunt paths) appears on 121 US grants and 163 published applications in this corpus.
Search patents in H01F- Granted patents
- 121
- Published applications
- 163
- Assignees
- 113
- Inventors
- 322
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 2 |
| 2004 | 0 | 4 |
| 2005 | 4 | 9 |
| 2006 | 2 | 6 |
| 2007 | 6 | 14 |
| 2008 | 7 | 14 |
| 2009 | 7 | 8 |
| 2010 | 8 | 12 |
| 2011 | 7 | 5 |
| 2012 | 5 | 2 |
| 2013 | 6 | 9 |
| 2014 | 3 | 7 |
| 2015 | 2 | 4 |
| 2016 | 4 | 5 |
| 2017 | 4 | 5 |
| 2018 | 2 | 8 |
| 2019 | 8 | 8 |
| 2020 | 3 | 7 |
| 2021 | 7 | 8 |
| 2022 | 6 | 6 |
| 2023 | 6 | 6 |
| 2024 | 7 | 6 |
| 2025 | 7 | 5 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electronic component19 May 2026US 12,633,441 B2Coilcraft, Incorporated
- Printed circuit board integrated resonance capability for planar transformers30 Sep 2025US 12,431,278 B2Raytheon Company
- Leakage transformer12 Aug 2025US 12,387,871 B2Delta Electronics (Thailand) Public Co., Ltd.
- Zero-sequence blocking transformer5 Aug 2025US 12,381,032 B2Hamilton Sundstrand Corporation
- Coil component13 May 2025US 12,300,425 B2TDK Corporation
- Electromagnetic interference filter20 Aug 2026US 2026/0246438 A1Lite-On Technology Corporation
- Transformer9 Oct 2025US 2025/0316417 A1Kabushiki Kaisha Toyota Jidoshokki
- Inductor and single-phase power converter11 Sep 2025US 2025/0286474 A1Huawei Digital Power Technologies Co., Ltd.
- Transformer core, power converter including the transformer core, and solar module including the same21 Aug 2025US 2025/0266203 A1Hanwha Solutions Corporation
- Matrix transformer10 Jul 2025US 2025/0226144 A1
Most cited
By later US patents
- Transformer having fractional turn windings135US 6,348,848 B12002
- Toroidal transformer with magnetic shunt65US 5,400,005 AAlbar, Inc. · 1995
- Integrated-magnetic filter having a lossy shunt54US 5,731,666 AMagneTek, Inc. · 1998
- Controlled leakage transformer for fluorescent lamp ballast including integral ballasting inductor51US 4,902,942 AGeneral Electric Company · 1990
- Precision inductive devices and methods41US 7,489,225 B2Pulse Engineering, Inc. · 2009