H01F 41/0253
For manufacturing permanent magnets
Official title: {for manufacturing permanent magnets}
H01F41/0253 (For manufacturing permanent magnets) appears on 1,555 US grants and 1,995 published applications in this corpus.
Search patents in H01F- Granted patents
- 1,555
- Published applications
- 1,995
- Assignees
- 573
- Inventors
- 3,052
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 7 | 0 |
| 1987 | 7 | 0 |
| 1988 | 1 | 0 |
| 1989 | 15 | 0 |
| 1990 | 18 | 0 |
| 1991 | 21 | 0 |
| 1992 | 16 | 0 |
| 1993 | 14 | 0 |
| 1994 | 17 | 0 |
| 1995 | 8 | 0 |
| 1996 | 11 | 0 |
| 1997 | 7 | 0 |
| 1998 | 9 | 0 |
| 1999 | 12 | 0 |
| 2000 | 7 | 0 |
| 2001 | 22 | 8 |
| 2002 | 35 | 50 |
| 2003 | 28 | 33 |
| 2004 | 29 | 56 |
| 2005 | 28 | 48 |
| 2006 | 28 | 49 |
| 2007 | 30 | 49 |
| 2008 | 37 | 53 |
| 2009 | 29 | 45 |
| 2010 | 35 | 75 |
| 2011 | 47 | 68 |
| 2012 | 47 | 74 |
| 2013 | 41 | 92 |
| 2014 | 29 | 97 |
| 2015 | 46 | 100 |
| 2016 | 63 | 98 |
| 2017 | 78 | 114 |
| 2018 | 76 | 120 |
| 2019 | 82 | 85 |
| 2020 | 95 | 92 |
| 2021 | 73 | 98 |
| 2022 | 80 | 126 |
| 2023 | 80 | 106 |
| 2024 | 90 | 120 |
| 2025 | 72 | 81 |
| 2026 | 54 | 58 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Anisotropic iron nitride permanent magnets6 Oct 2026US 12,755,878 B2Niron Magnetics, Inc.
- Method of manufacturing permanent magnets6 Oct 2026US 12,755,879 B2
- R-T-B based permanent magnet and method for manufacturing same29 Sep 2026US 12,749,603 B2TDK Corporation
- Compound for bonded magnet, bonded magnet, method of producing same, and resin composition for bonded magnets29 Sep 2026US 12,749,619 B2Nichia Corporation
- Permeating treatment method for radially oriented sintered magnet, magnet, and composition for magnet permeation29 Sep 2026US 12,749,620 B2China Rare Earth Radimag (Shenzhen) Technology Co., Ltd.
- Magnetic granular material, manufacturing method of the same, and manufacturing method of rare earth magnet1 Oct 2026US 2026/0302012 A1Honda Motor Co., Ltd.
- Rare earth magnet and manufacturing method of the same1 Oct 2026US 2026/0302060 A1Honda Motor Co., Ltd.
- Method for producing magnetic particles, magnetic particles, and permanent magnet using same24 Sep 2026US 2026/0290662 A1AGC Inc.
- Magnet module, sensor module, and method for manufacturing magnet module10 Sep 2026US 2026/0269114 A1Panasonic Intellectual Property Management Co., Ltd.
- Near net shape fabrication of anisotropic magnet using hot roll method13 Aug 2026US 2026/0233306 A1Iowa State University Research Foundation, Inc.
Most cited
By later US patents
- Methods for forming anastomoses using magnetic force364US 6,352,543 B1Ventrica, Inc. · 2002
- Components, systems and methods for forming anastomoses using magnetism or other coupling means290US 7,241,300 B2Medtronic, Inc. · 2007
- Components, systems and methods for forming anastomoses using magnetism or other coupling means218US 7,232,449 B2Medtronic, Inc. · 2007
- Methods, devices and systems for forming magnetic anastomoses202US 7,909,837 B2Medtronic, Inc. · 2011
- Methods for forming magnetic vascular anastomoses156US 6,652,540 B1Ventrica, Inc. · 2003