H01F 27/2885
With shields or electrodes
Official title: {with shields or electrodes (shields or electrodes for pancake coils H01F27/2871; construction of electric or magnetic shields or screens H01F27/36)}
H01F27/2885 (With shields or electrodes) appears on 263 US grants and 351 published applications in this corpus.
Search patents in H01F- Granted patents
- 263
- Published applications
- 351
- Assignees
- 168
- Inventors
- 730
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 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 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 0 |
| 2005 | 1 | 1 |
| 2006 | 1 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 1 | 7 |
| 2011 | 2 | 0 |
| 2012 | 2 | 0 |
| 2013 | 2 | 7 |
| 2014 | 3 | 7 |
| 2015 | 4 | 19 |
| 2016 | 8 | 8 |
| 2017 | 7 | 23 |
| 2018 | 13 | 42 |
| 2019 | 24 | 29 |
| 2020 | 27 | 42 |
| 2021 | 28 | 27 |
| 2022 | 39 | 33 |
| 2023 | 28 | 33 |
| 2024 | 30 | 25 |
| 2025 | 26 | 29 |
| 2026 | 9 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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.
- Transformer and power equipment with long-term insulation reliability11 Aug 2026US 12,706,241 B2Huawei Digital Power Technologies Co., Ltd.
- Electronic component7 Apr 2026US 12,597,551 B2Rohm Co., Ltd.
- Robotic electromagnetic electric vehicle charging system31 Mar 2026US 12,589,663 B2Prezent Energy Corporation
- Switch and drive apparatus27 Aug 2026US 2026/0254450 A1Huawei Digital Power Technologies 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.
- Transformer2 Jul 2026US 2026/0188561 A1Sungrow Power Supply Co., Ltd.
- Low Common-Mode Noise Planar Transformer25 Jun 2026US 2026/0179831 A1National Instruments Corporation
Most cited
By later US patents
- 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
- Coil unit and electronic instrument28US 8,541,977 B2Seiko Epson Corporation · 2013
- Planar transformers21US 6,794,977 B2Nokia Corportation · 2004