H01F 3/08
Made from powder
Official title: made from powder (powder coatings on sheets H01F3/02; on strips or ribbons H01F3/04; on wires H01F3/06)
H01F3/08 (Made from powder) appears on 463 US grants and 718 published applications in this corpus.
Search patents in H01F- Granted patents
- 463
- Published applications
- 718
- Assignees
- 243
- Inventors
- 1,224
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 6 |
| 2003 | 4 | 10 |
| 2004 | 3 | 11 |
| 2005 | 4 | 8 |
| 2006 | 4 | 6 |
| 2007 | 6 | 11 |
| 2008 | 3 | 13 |
| 2009 | 7 | 9 |
| 2010 | 7 | 14 |
| 2011 | 6 | 19 |
| 2012 | 9 | 17 |
| 2013 | 15 | 36 |
| 2014 | 13 | 30 |
| 2015 | 15 | 39 |
| 2016 | 23 | 21 |
| 2017 | 18 | 34 |
| 2018 | 22 | 46 |
| 2019 | 28 | 54 |
| 2020 | 37 | 46 |
| 2021 | 33 | 54 |
| 2022 | 28 | 40 |
| 2023 | 45 | 58 |
| 2024 | 52 | 60 |
| 2025 | 27 | 43 |
| 2026 | 25 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Core piece, reactor, converter, and power conversion device6 Oct 2026US 12,755,888 B2Autonetworks Technologies, Ltd.
- Soft magnetic powder, dust core, magnetic element, and electronic device22 Sep 2026US 12,744,142 B2Seiko Epson Corporation
- Semiconductor device and method for adjusting phase characteristics thereof18 Aug 2026US 12,713,959 B2Kabushiki Kaisha Toshiba
- Soft magnetic powder containing oxide insulation film, manufacturing method thereof, and powder core produced therefrom28 Jul 2026US 12,695,013 B2Korea Institute of Science and Technology
- Induction charging device for a vehicle charging system14 Jul 2026US 12,683,072 B2Mahle International GmbH
- Method for fabricating inductors and inductor1 Oct 2026US 2026/0302059 A1Anhui University
- Additively manufactured passive components for high frequency applications24 Sep 2026US 2026/0284745 A1University of Pittsburgh—Of the Commonwealth System of Higher Education
- Improved temperature-stable soft-magnetic powder24 Sep 2026US 2026/0290665 A1BASF SE
- Ferrite composition and magnetic core comprising same17 Sep 2026US 2026/0279633 A1LG Innotek Co., Ltd.
- Insulator-Coated Soft Magnetic Powder, Dust Core, Magnetic Element And Electronic Device27 Aug 2026US 2026/0253771 A1Seiko Epson Corporation
Most cited
By later US patents
- Ferromagnetic powder for dust core300US 7,498,080 B2Foxconn Technology Co., Ltd. · 2009
- Magnetic element and method of manufacturing the same114US 6,392,525 B1Matsushita Electric Industrial Co., Ltd. · 2002
- Powdered iron core magnetic devices106US 4,601,765 AGeneral Electric Company · 1986
- Doubly-coated iron particles84US 5,063,011 AHoeganaes Corporation · 1991
- Powdered iron core magnetic devices83US 4,601,753 AGeneral Electric Company · 1986