H01F 41/024
Manufacturing of magnetic circuits made from deformed sheets
Official title: {Manufacturing of magnetic circuits made from deformed sheets (magnetic cores made from deformed sheets H01F27/2455)}
H01F41/024 (Manufacturing of magnetic circuits made from deformed sheets) appears on 75 US grants and 89 published applications in this corpus.
Search patents in H01F- Granted patents
- 75
- Published applications
- 89
- Assignees
- 57
- Inventors
- 179
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 3 |
| 2009 | 1 | 1 |
| 2010 | 0 | 2 |
| 2011 | 2 | 3 |
| 2012 | 2 | 1 |
| 2013 | 0 | 2 |
| 2014 | 3 | 0 |
| 2015 | 1 | 5 |
| 2016 | 1 | 3 |
| 2017 | 3 | 5 |
| 2018 | 1 | 3 |
| 2019 | 2 | 4 |
| 2020 | 2 | 6 |
| 2021 | 5 | 3 |
| 2022 | 3 | 13 |
| 2023 | 3 | 13 |
| 2024 | 10 | 6 |
| 2025 | 6 | 8 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for producing an electromagnet9 Jun 2026US 12,651,948 B2Audi AG
- Method and device for producing wound core19 May 2026US 12,633,452 B2Nippon Steel Corporation
- Oriented electrical steel sheet and method for manufacturing same5 May 2026US 12,620,513 B2Posco
- Wound core13 Jan 2026US 12,525,384 B2Nippon Steel Corporation
- Multilayer magnetic sheet16 Dec 2025US 12,496,803 B2Proterial, Ltd.
- Core manufacturing method, device, and laminated iron core11 Jun 2026US 2026/0162887 A1NHK Spring Co., Ltd.
- Magnetic isolation sheet, coil module, and electronic device5 Mar 2026US 2026/0066177 A1Honor Device Co., Ltd.
- Sheet-shaped magnetic member22 Jan 2026US 2026/0024688 A1Proterial, Ltd.
- Wound core27 Nov 2025US 2025/0364173 A1Nippon Steel Corporation
- Wound core4 Sep 2025US 2025/0279234 A1Nippon Steel Corporation
Most cited
By later US patents
- Progressive stamping die assembly having transversely movable die station and method of manufacturing a stack of laminae therewith36US 6,742,239 B2L. H. Carbide Corporation · 2004
- Method of manufacturing transformer cores17US 4,557,039 A1985
- Method of making V-shaped magnetic circuit elements12US 4,085,603 A1978
- Progressive stamping die assembly having transversely movable die station and method of manufacturing a stack of laminae therewith12US 6,484,387 B1L. H. Carbide Corporation · 2002
- Method for making packets of amorphous metal strip for transformer-core manufacture9US 5,063,654 AGeneral Electric Company · 1991