H01F 41/0213
Manufacturing of magnetic circuits made from strip or ribbon
Official title: {Manufacturing of magnetic circuits made from strip(s) or ribbon(s) (magnetic cores made by winding a ribbon H01F27/25)}
H01F41/0213 (Manufacturing of magnetic circuits made from strip or ribbon) appears on 435 US grants and 358 published applications in this corpus.
Search patents in H01F- Granted patents
- 435
- Published applications
- 358
- Assignees
- 190
- Inventors
- 837
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 7 | 0 |
| 1987 | 9 | 0 |
| 1988 | 12 | 0 |
| 1989 | 9 | 0 |
| 1990 | 10 | 0 |
| 1991 | 11 | 0 |
| 1992 | 10 | 0 |
| 1993 | 10 | 0 |
| 1994 | 11 | 0 |
| 1995 | 10 | 0 |
| 1996 | 7 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 7 | 0 |
| 2000 | 10 | 0 |
| 2001 | 8 | 4 |
| 2002 | 8 | 8 |
| 2003 | 10 | 12 |
| 2004 | 8 | 19 |
| 2005 | 6 | 9 |
| 2006 | 9 | 15 |
| 2007 | 11 | 12 |
| 2008 | 7 | 6 |
| 2009 | 11 | 10 |
| 2010 | 5 | 19 |
| 2011 | 9 | 11 |
| 2012 | 8 | 18 |
| 2013 | 8 | 13 |
| 2014 | 9 | 19 |
| 2015 | 15 | 12 |
| 2016 | 12 | 18 |
| 2017 | 11 | 16 |
| 2018 | 12 | 21 |
| 2019 | 8 | 24 |
| 2020 | 17 | 15 |
| 2021 | 18 | 21 |
| 2022 | 18 | 18 |
| 2023 | 19 | 16 |
| 2024 | 14 | 12 |
| 2025 | 14 | 7 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Soft magnetic alloy ribbon and magnetic core2 Jun 2026US 12,646,641 B2Seiko Epson Corporation
- Method for producing laminates suitable for magnetic cores26 May 2026US 12,640,294 B2His Majesty the King In Right of Canada, AS Represented By the Minister of Natural Resources
- Electrical steel strip, use of an electrical steel strip and method for producing an electrical steel strip19 May 2026US 12,633,442 B2Wickeder Westfalenstahl GmbH
- Wound magnetic core, alloy core, and method for manufacturing wound magnetic core12 May 2026US 12,626,845 B2Proterial, Ltd.
- Spiral core current transformer for energy harvesting applications7 Apr 2026US 12,597,558 B2S&C Electric Company
- Magnetic thin film process chamber design for high-density power converters6 Aug 2026US 2026/0229394 A1APPLIED Materials.Inc.
- Magnetic core and noise filter11 Jun 2026US 2026/0162871 A1Riken
- Method for manufacturing layered body of iron-based amorphous alloy29 Jan 2026US 2026/0031260 A1Next Core Technologies, Inc.
- Method and device for producing a tape-wound toroidal core2 Oct 2025US 2025/0308771 A1
- Annular magnetic body for noise control and member for noise control21 Aug 2025US 2025/0266194 A1Riken
Most cited
By later US patents
- Contact-less power transfer495US 6,906,495 B2Splashpower Limited · 2005
- Contact-less power transfer438US 7,525,283 B2Access Business Group International LLC · 2009
- Contact-less power transfer117US 7,714,537 B2Access Business Group International LLC · 2010
- Contact-less power transfer117US 7,863,861 B2Access Business Group International LLC · 2011
- Contact-less power transfer108US 7,952,324 B2Access Business Group International LLC · 2011