H01F 41/074
Winding flat coils
H01F41/074 (Winding flat coils) appears on 55 US grants and 66 published applications in this corpus.
Search patents in H01F- Granted patents
- 55
- Published applications
- 66
- Assignees
- 52
- Inventors
- 148
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 2 | 0 |
| 1985 | 0 | 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 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 2 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 2 |
| 2008 | 1 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 3 |
| 2015 | 3 | 4 |
| 2016 | 2 | 5 |
| 2017 | 4 | 2 |
| 2018 | 3 | 4 |
| 2019 | 0 | 2 |
| 2020 | 3 | 6 |
| 2021 | 9 | 4 |
| 2022 | 1 | 3 |
| 2023 | 3 | 5 |
| 2024 | 3 | 8 |
| 2025 | 4 | 3 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Flipping coil for wireless power transfer8 Sep 2026US 12,731,720 B2Renesas Electronics America Inc.
- Spiral core current transformer for energy harvesting applications7 Apr 2026US 12,597,558 B2S&C Electric Company
- Techniques for distributing forces in high field magnets and related systems and methods17 Feb 2026US 12,555,711 B2Commonwealth Fusion Systems LLC
- Manufacturing methods of a planar transformer10 Feb 2026US 12,548,706 B2Apple Inc.
- Device having a multimode antenna with variable width of conductive wire27 Jan 2026US 12,537,132 B2NuCurrent, Inc.
- Device Having a Multimode Antenna With Variable Width of Conductive Wire17 Sep 2026US 2026/0279661 A1NuCurrent, Inc.
- 2d wave-wound wire forming device25 Jun 2026US 2026/0175285 A1UPTEC Intelligent Manufacturing (Wuxi) Co., Ltd.
- Wire rod disposing device and wire rod disposition method11 Jun 2026US 2026/0159351 A1Nittoku Co., Ltd.
- Printed circuit board of planar transformer and manufacturing method thereof21 May 2026US 2026/0142069 A1Apple Inc.
- Device Having a Multimode Antenna With Variable Width of Conductive Wire5 Jun 2025US 2025/0182961 A1NuCurrent, Inc.
Most cited
By later US patents
- Miniaturized printed circuit and coil assembly32US 5,606,488 ASokymat S.A. · 1997
- Wiring method for forming conductor wire on a substrate board17US 6,665,931 B2Furukawa Electric Co., Ltd. · 2003
- Wireless charging coil14US 9,859,052 B2A K Stamping Co. Inc. · 2018
- Horizontal compartmentized square bobbin of high-voltage transformer13US 5,332,989 A1994
- Core chuck for coil winding13US 5,393,001 A1995