H01F 1/0577
Sintered
Official title: {sintered}
H01F1/0577 (Sintered) appears on 834 US grants and 1,024 published applications in this corpus.
Search patents in H01F- Granted patents
- 834
- Published applications
- 1,024
- Assignees
- 234
- Inventors
- 1,357
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 11 | 0 |
| 1989 | 14 | 0 |
| 1990 | 20 | 0 |
| 1991 | 18 | 0 |
| 1992 | 14 | 0 |
| 1993 | 18 | 0 |
| 1994 | 3 | 0 |
| 1995 | 15 | 0 |
| 1996 | 14 | 0 |
| 1997 | 7 | 0 |
| 1998 | 4 | 0 |
| 1999 | 8 | 0 |
| 2000 | 8 | 0 |
| 2001 | 13 | 2 |
| 2002 | 14 | 21 |
| 2003 | 12 | 11 |
| 2004 | 9 | 22 |
| 2005 | 4 | 19 |
| 2006 | 14 | 19 |
| 2007 | 16 | 25 |
| 2008 | 9 | 16 |
| 2009 | 17 | 17 |
| 2010 | 13 | 35 |
| 2011 | 14 | 48 |
| 2012 | 37 | 42 |
| 2013 | 18 | 52 |
| 2014 | 11 | 57 |
| 2015 | 23 | 71 |
| 2016 | 31 | 65 |
| 2017 | 43 | 55 |
| 2018 | 56 | 67 |
| 2019 | 58 | 48 |
| 2020 | 54 | 46 |
| 2021 | 38 | 41 |
| 2022 | 42 | 60 |
| 2023 | 40 | 52 |
| 2024 | 28 | 65 |
| 2025 | 34 | 40 |
| 2026 | 26 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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
- 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.
- R-T-B based permanent magnet22 Sep 2026US 12,744,139 B2TDK Corporation
- Corrosion-resistant permanent magnet for an intravascular blood pump8 Sep 2026US 12,731,708 B2Abiomed Europe GmbH
- Magnetic steel containing high-abundance rare earth elements, preparation method therefor, and use thereof8 Oct 2026US 2026/0311917 A1FUJIAN GOLDEN DRAGON RARE-EARTH Co., Ltd.
- Sintered r-t-b based magnet24 Sep 2026US 2026/0290663 A1Proterial, Ltd.
- R-t-b sintered magnet17 Sep 2026US 2026/0279626 A1Proterial, Ltd.
- Method for producing r-t-q system sintered magnet13 Aug 2026US 2026/0237544 A1Proterial, Ltd.
- Rare earth sintered magnet, method for producing rare earth sintered magnet, rotor, and rotary machine30 Jul 2026US 2026/0221322 A1Mitsubishi Electric Corporation
Most cited
By later US patents
- Magnetic materials and permanent magnets113US 4,770,723 ASumitomo Special Metals Co., Ltd. · 1988
- Process for producing permanent magnet materials87US 4,597,938 ASumitomo Special Metals Co., Ltd. · 1986
- Magnetic materials and permanent magnets84US 4,792,368 ASumitomo Special Metals Co., Ltd. · 1988
- Process for producing magnetic materials82US 4,601,875 ASumitomo Special Metals Co., Ltd. · 1986
- Permanent magnet materials49US 4,684,406 ASumitomo Special Metals Co., Ltd. · 1987