H01F 3/10
Composite arrangements of magnetic circuits
H01F3/10 (Composite arrangements of magnetic circuits) appears on 1,631 US grants and 2,203 published applications in this corpus.
Search patents in H01F- Granted patents
- 1,631
- Published applications
- 2,203
- Assignees
- 737
- Inventors
- 3,673
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 4 | 0 |
| 1992 | 10 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 9 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 15 | 0 |
| 1999 | 6 | 0 |
| 2000 | 6 | 0 |
| 2001 | 7 | 6 |
| 2002 | 14 | 43 |
| 2003 | 22 | 26 |
| 2004 | 22 | 46 |
| 2005 | 38 | 34 |
| 2006 | 31 | 57 |
| 2007 | 34 | 52 |
| 2008 | 27 | 56 |
| 2009 | 30 | 75 |
| 2010 | 52 | 75 |
| 2011 | 58 | 59 |
| 2012 | 51 | 50 |
| 2013 | 52 | 80 |
| 2014 | 40 | 79 |
| 2015 | 48 | 108 |
| 2016 | 61 | 70 |
| 2017 | 69 | 121 |
| 2018 | 86 | 145 |
| 2019 | 106 | 161 |
| 2020 | 121 | 131 |
| 2021 | 84 | 125 |
| 2022 | 110 | 128 |
| 2023 | 104 | 146 |
| 2024 | 93 | 129 |
| 2025 | 90 | 122 |
| 2026 | 68 | 79 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fully integrated gyrator with a high speed stack and networks of server farms and telecommunication modes incorporating the gyrator25 Aug 2026US 12,717,396 B2
- Magnetic core of an electronic assembly25 Aug 2026US 12,718,976 B2Robert Bosch GmbH
- Magnetic component18 Aug 2026US 12,712,110 B2Cyntec Co., Ltd.
- Coupled inductor18 Aug 2026US 12,712,116 B2Cyntec Co., Ltd.
- Multi-phase coupled inductor18 Aug 2026US 12,712,121 B2Chilisin Electronics Corp.
- Choke for a multi-conductor system8 Oct 2026US 2026/0311924 A1TDK Electronics Co., Ltd.
- Iron core-equipped superconducting magnet, accelerator including iron core-equipped superconducting magnet, and particle beam therapy apparatus including accelerator1 Oct 2026US 2026/0302027 A1Hitachi High-Tech Corporation
- Transformer and electrical device with transformer1 Oct 2026US 2026/0302058 A1
- Multiphase system comprising power converter27 Aug 2026US 2026/0254352 A1Mitsubishi Electric Corporation
- Power unit27 Aug 2026US 2026/0254365 A1Delta Electronics (Shanghai) Co., Ltd.
Most cited
By later US patents
- Inductive power coupling with constant voltage output258US 4,800,328 AInductran Corporation · 1989
- Split core sensing transformer254US 7,312,686 B2Veris Industries, LLC · 2007
- Power supply control223US 7,782,031 B2Intersil Americas Inc. · 2010
- Inverter transformer172US 5,812,045 AToko, Inc. · 1998
- Composite magnetic core for switch-mode power converters157US 6,980,077 B1ColdWatt, Inc. · 2005