H01F 27/361
Made of combinations of electrically conductive material and ferromagnetic material
Official title: {made of combinations of electrically conductive material and ferromagnetic material}
H01F27/361 (Made of combinations of electrically conductive material and ferromagnetic material) appears on 186 US grants and 234 published applications in this corpus.
Search patents in H01F- Granted patents
- 186
- Published applications
- 234
- Assignees
- 114
- Inventors
- 466
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 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 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 2 |
| 2004 | 1 | 1 |
| 2005 | 1 | 2 |
| 2006 | 1 | 0 |
| 2007 | 1 | 3 |
| 2008 | 1 | 4 |
| 2009 | 1 | 3 |
| 2010 | 3 | 5 |
| 2011 | 2 | 3 |
| 2012 | 4 | 5 |
| 2013 | 2 | 5 |
| 2014 | 4 | 9 |
| 2015 | 6 | 15 |
| 2016 | 4 | 6 |
| 2017 | 9 | 14 |
| 2018 | 12 | 36 |
| 2019 | 23 | 21 |
| 2020 | 8 | 27 |
| 2021 | 25 | 10 |
| 2022 | 25 | 14 |
| 2023 | 10 | 19 |
| 2024 | 16 | 13 |
| 2025 | 15 | 10 |
| 2026 | 4 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Method of making a shielded inductor14 Apr 2026US 12,603,212 B2Vishay Dale Electronics, Inc.
- Thermal design of high-power wireless charging system10 Feb 2026US 12,548,710 B2UT-Battelle, LLC
- Wireless power transfer6 Jan 2026US 12,515,541 B2Mojo Mobility, Inc.
- Wireless charging device, and transportation means comprising same28 Oct 2025US 12,454,188 B2Skc Co., Ltd.
- Direct Current Quantum Magnetic Transformer and Related Energy Saving Devices and Methods1 Oct 2026US 2026/0302048 A1Harmonify AB
- Methods and Circuitry for Mitigating Saturation in Wireless Power Systems28 May 2026US 2026/0149314 A1Apple Inc.
- Wireless power transfer30 Apr 2026US 2026/0116224 A1Mojo Mobility, Inc.
- Systems and methods for enhancing leakage inductance of power transformers26 Feb 2026US 2026/0058051 A1Archer Aviation Inc.
- Wireless charger device5 Feb 2026US 2026/0039146 A1Apple Inc.
Most cited
By later US patents
- System and method for inductive charging of portable devices499US 8,169,185 B2Mojo Mobility, Inc. · 2012
- Inductive battery charger system with primary transformer windings formed in a multi-layer structure297US 7,164,255 B2City University of Hong Kong · 2007
- Planar inductive battery charging system223US 7,576,514 B2Cityu Research Limited · 2009
- Planar printed circuit-board transformers with effective electromagnetic interference (EMI) shielding216US 6,888,438 B2City University of Hong Kong · 2005
- Planar printed-circuit-board transformers with effective electromagnetic interference (EMI) shielding215US 6,501,364 B1City University of Hong Kong · 2002