H01F 41/028
Radial anisotropy
Official title: {Radial anisotropy (for rotor or stator bodies H02K15/02)}
H01F41/028 (Radial anisotropy) appears on 114 US grants and 91 published applications in this corpus.
Search patents in H01F- Granted patents
- 114
- Published applications
- 91
- Assignees
- 75
- Inventors
- 278
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 4 |
| 2003 | 4 | 3 |
| 2004 | 1 | 1 |
| 2005 | 2 | 6 |
| 2006 | 3 | 10 |
| 2007 | 2 | 3 |
| 2008 | 6 | 10 |
| 2009 | 4 | 6 |
| 2010 | 4 | 5 |
| 2011 | 5 | 2 |
| 2012 | 4 | 4 |
| 2013 | 3 | 5 |
| 2014 | 1 | 1 |
| 2015 | 3 | 2 |
| 2016 | 3 | 2 |
| 2017 | 4 | 3 |
| 2018 | 0 | 8 |
| 2019 | 1 | 2 |
| 2020 | 5 | 1 |
| 2021 | 1 | 0 |
| 2022 | 2 | 3 |
| 2023 | 1 | 4 |
| 2024 | 3 | 3 |
| 2025 | 2 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for continuous manufacturing of permanent magnets3 Feb 2026US 12,542,236 B2Advanced Magnet Lab, Inc.
- Method of manufacturing polar anisotropic magnet, method of manufacturing magnet assembly, polar anisotropic magnet, magnet assembly, and composite magnet assembly19 Aug 2025US 12,394,564 B2Miyawaki Kobo Co., Ltd.
- Motor rotor and motor12 Aug 2025US 12,388,307 B2Huawei Digital Power Technologies Co., Ltd.
- Bond magnet and manufacturing method of the same27 Aug 2024US 12,073,993 B2Denso Corporation
- Mold for and method of producing polar anisotropic ring-shaped bonded magnet molded articles16 Jul 2024US 12,040,128 B2Nichia Corporation
- Device for manufacturing permanent magnet1 Jan 2026US 2026/0004969 A1Resonac Corporation
- Device for manufacturing permanent magnet25 Sep 2025US 2025/0299877 A1Resonac Corporation
- Cylindrical bonded magnet, method of producing cylindrical bonded magnet, and mold for forming cylindrical bonded magnet9 Jan 2025US 2025/0010369 A1Nichia Corporation
- Electric machines using axially-magnetized curvilinear permanent magnets26 Dec 2024US 2024/0429761 A1
- Gradient ring-shaped bonded magnet and preparation method therefor, and motor27 Jun 2024US 2024/0212898 A1Grirem Advanced Materials Co., Ltd.
Most cited
By later US patents
- Magnets with varying magnetization direction and method of making such magnets134US 6,940,379 B2Stereotaxis, Inc. · 2005
- Magnets with varying magnetization direction and method of making such magnets98US 7,286,034 B2Stereotaxis, Inc. · 2007
- Multiple ring polefaceless permanent magnet and method of making40US 7,423,431 B2General Electric Company · 2008
- Method of producing a cylindrical permanent magnet36US 4,600,555 AHitachi Metals, Ltd. · 1986
- Magnet and method of manufacturing the same36US 5,181,971 ACanon Kabushiki Kaisha · 1993