H01F 27/288
Shielding
Official title: {Shielding}
H01F27/288 (Shielding) appears on 447 US grants and 588 published applications in this corpus.
Search patents in H01F- Granted patents
- 447
- Published applications
- 588
- Assignees
- 246
- Inventors
- 1,154
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 7 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 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 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 2 |
| 2002 | 2 | 13 |
| 2003 | 0 | 5 |
| 2004 | 4 | 5 |
| 2005 | 11 | 4 |
| 2006 | 5 | 1 |
| 2007 | 2 | 0 |
| 2008 | 1 | 5 |
| 2009 | 3 | 3 |
| 2010 | 3 | 10 |
| 2011 | 3 | 2 |
| 2012 | 2 | 0 |
| 2013 | 3 | 12 |
| 2014 | 5 | 14 |
| 2015 | 8 | 33 |
| 2016 | 17 | 16 |
| 2017 | 16 | 39 |
| 2018 | 27 | 64 |
| 2019 | 35 | 49 |
| 2020 | 39 | 75 |
| 2021 | 47 | 40 |
| 2022 | 60 | 52 |
| 2023 | 42 | 47 |
| 2024 | 42 | 37 |
| 2025 | 41 | 37 |
| 2026 | 15 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Dry-type transformer and winding method thereof1 Sep 2026US 12,725,727 B2Huawei Digital Power Technologies Co., Ltd.
- Electric field rejection of a dual coil telemetry system18 Aug 2026US 12,708,266 B2Medtronic, Inc.
- Coil unit for inductively charging a vehicle, and system11 Aug 2026US 12,703,253 B2Bayerische Motoren Werke Aktiengesellschaft
- Transformer and power equipment with long-term insulation reliability11 Aug 2026US 12,706,241 B2Huawei Digital Power Technologies Co., Ltd.
- Thermal management of transformer windings7 Apr 2026US 12,597,549 B2Murata Manufacturing Co., Ltd.
- Electromagnet with impedance element27 Aug 2026US 2026/0253776 A1Svm Schultz Verwaltungs-GmbH & Co.KG
- Switch and drive apparatus27 Aug 2026US 2026/0254450 A1Huawei Digital Power Technologies Co., Ltd.
- Magnetic Device Having Shielding Layer20 Aug 2026US 2026/0245788 A1Cyntec Co., Ltd.
- Electronic device for wirelessly charging battery13 Aug 2026US 2026/0238046 A1Samsung Electronics Co., Ltd.
- Electronic component23 Jul 2026US 2026/0213063 A1Rohm Co., Ltd.
Most cited
By later US patents
- Turbo generator plant with a high voltage electric generator89US 6,936,947 B1ABB AB · 2005
- Coil assembly and magnetic element with shielding function78US 8,593,245 B2Delta Electronics, Inc. · 2013
- Reducing transformer interwinding capacitance60US 5,781,077 ABurr-Brown Corporation · 1998
- Planar magnetic structure45US 8,089,331 B2Raytheon Company · 2012
- Conductor for high-voltage windings and a rotating electric machine comprising a winding including the conductor37US 6,376,775 B1ABB AB · 2002