H01F 1/0575
Pressed, sintered or bonded together
Official title: {pressed, sintered or bonded together}
H01F1/0575 (Pressed, sintered or bonded together) appears on 1,184 US grants and 1,311 published applications in this corpus.
Search patents in H01F- Granted patents
- 1,184
- Published applications
- 1,311
- Assignees
- 323
- Inventors
- 1,914
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 14 | 0 |
| 1989 | 26 | 0 |
| 1990 | 40 | 0 |
| 1991 | 38 | 0 |
| 1992 | 31 | 0 |
| 1993 | 32 | 0 |
| 1994 | 12 | 0 |
| 1995 | 26 | 0 |
| 1996 | 22 | 0 |
| 1997 | 13 | 0 |
| 1998 | 6 | 0 |
| 1999 | 18 | 0 |
| 2000 | 16 | 0 |
| 2001 | 22 | 8 |
| 2002 | 32 | 46 |
| 2003 | 32 | 28 |
| 2004 | 20 | 40 |
| 2005 | 21 | 28 |
| 2006 | 20 | 26 |
| 2007 | 22 | 30 |
| 2008 | 15 | 23 |
| 2009 | 19 | 31 |
| 2010 | 19 | 47 |
| 2011 | 24 | 55 |
| 2012 | 42 | 57 |
| 2013 | 23 | 64 |
| 2014 | 14 | 64 |
| 2015 | 29 | 82 |
| 2016 | 40 | 72 |
| 2017 | 51 | 64 |
| 2018 | 63 | 77 |
| 2019 | 63 | 56 |
| 2020 | 60 | 56 |
| 2021 | 45 | 58 |
| 2022 | 48 | 72 |
| 2023 | 49 | 59 |
| 2024 | 37 | 78 |
| 2025 | 40 | 51 |
| 2026 | 30 | 39 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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.
- 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.
- Sintered r-t-b based magnet24 Sep 2026US 2026/0290663 A1Proterial, Ltd.
- Composite permanent magnet material and magnet-free magnetic false eyelash17 Sep 2026US 2026/0272088 A1Qingdao Yiernuo Arts and Crafts Import & Export Co., Ltd.
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
- Method for making rare-earth element containing permanent magnets68US 4,585,473 ACrucible Materials Corporation · 1986