H01F 27/255
Made from particles
Official title: made from particles (H01F27/26 takes precedence)
H01F27/255 (Made from particles) appears on 1,139 US grants and 1,645 published applications in this corpus.
Search patents in H01F- Granted patents
- 1,139
- Published applications
- 1,645
- Assignees
- 383
- Inventors
- 2,407
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 6 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 7 |
| 2003 | 8 | 14 |
| 2004 | 6 | 10 |
| 2005 | 9 | 14 |
| 2006 | 11 | 23 |
| 2007 | 10 | 16 |
| 2008 | 17 | 18 |
| 2009 | 8 | 17 |
| 2010 | 13 | 21 |
| 2011 | 14 | 13 |
| 2012 | 13 | 23 |
| 2013 | 15 | 40 |
| 2014 | 22 | 64 |
| 2015 | 19 | 65 |
| 2016 | 47 | 82 |
| 2017 | 41 | 123 |
| 2018 | 74 | 140 |
| 2019 | 93 | 144 |
| 2020 | 120 | 144 |
| 2021 | 81 | 175 |
| 2022 | 81 | 124 |
| 2023 | 145 | 98 |
| 2024 | 131 | 111 |
| 2025 | 73 | 82 |
| 2026 | 48 | 77 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Magnetic base body containing metal magnetic particles and coil component including the same29 Sep 2026US 12,749,610 B2Taiyo Yuden Co., Ltd.
- Magnetic base body containing metal magnetic particles and coil component including the same22 Sep 2026US 12,744,150 B2Taiyo Yuden Co., Ltd.
- Metal magnetic particle, inductor, method for manufacturing metal magnetic particle, and method for manufacturing metal magnetic core22 Sep 2026US 12,744,151 B2Murata Manufacturing Co., Ltd.
- Power inductor, preparation method of power inductor, and system in package module15 Sep 2026US 12,738,407 B2Huawei Digital Power Technologies Co., Ltd.
- Coil component8 Sep 2026US 12,731,724 B2Murata Manufacturing Co., Ltd.
- Method of manufacturing a coil component1 Oct 2026US 2026/0295668 A1Murata Manufacturing Co., Ltd.
- Electronic component and information reading method1 Oct 2026US 2026/0302018 A1TDK Corporation
- Alloy powder compositions and inductors24 Sep 2026US 2026/0290664 A1Chilisin Electronics Corp.
- Magnetic core and coil component17 Sep 2026US 2026/0279644 A1TDK Corporation
- Core piece, reactor, converter and power conversion device3 Sep 2026US 2026/0260795 A1Autonetworks Technologies, Ltd.
Most cited
By later US patents
- Ferromagnetic powder for dust core300US 7,498,080 B2Foxconn Technology Co., Ltd. · 2009
- Integrated-magnetic apparatus210US 5,726,615 A1998
- Multiphase voltage regulator having coupled inductors with reduced winding resistance189US 7,649,434 B2Virginia Tech Intellectual Properties, Inc. · 2010
- Ferrite core185US 6,501,362 B1UMEC USA, Inc. · 2002
- Composite magnetic core for switch-mode power converters157US 6,980,077 B1ColdWatt, Inc. · 2005