H01F 1/058
And iva elements
Official title: and IVa elements, e.g. Gd2Fe14C
H01F1/058 (And iva elements) appears on 104 US grants and 101 published applications in this corpus.
Search patents in H01F- Granted patents
- 104
- Published applications
- 101
- Assignees
- 56
- Inventors
- 231
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 2 |
| 2002 | 4 | 6 |
| 2003 | 4 | 4 |
| 2004 | 6 | 10 |
| 2005 | 1 | 3 |
| 2006 | 2 | 12 |
| 2007 | 6 | 4 |
| 2008 | 3 | 2 |
| 2009 | 8 | 6 |
| 2010 | 1 | 5 |
| 2011 | 6 | 3 |
| 2012 | 2 | 3 |
| 2013 | 1 | 4 |
| 2014 | 1 | 2 |
| 2015 | 1 | 1 |
| 2016 | 1 | 1 |
| 2017 | 2 | 8 |
| 2018 | 3 | 3 |
| 2019 | 1 | 4 |
| 2020 | 4 | 5 |
| 2021 | 6 | 5 |
| 2022 | 2 | 3 |
| 2023 | 4 | 2 |
| 2024 | 2 | 0 |
| 2025 | 2 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- R-T-B-based permanent magnet material, preparation method therefor and use thereof20 Jan 2026US 12,531,174 B2FUJIAN GOLDEN DRAGON RARE-EARTH Co., Ltd.
- Fine grain structures for tough rare earth permanent magnets8 Apr 2025US 12,272,471 B2Iowa State University Research Foundation, Inc.
- Feedstock and heterogeneous structure for tough rare earth permanent magnets and production therefor21 Jan 2025US 12,205,762 B2Iowa State University Research Foundation, Inc.
- Anisotropic bonded magnet and preparation method thereof12 Nov 2024US 12,142,403 B2Grirem Advanced Materials Co., Ltd.
- Composite magnetic material and inductor using the same13 Feb 2024US 11,901,104 B2Murata Manufacturing Co., Ltd.
- Integrally formed inductor and its manufacturing method for the same13 Aug 2026US 2026/0237543 A1HONG DANG Technology Co., Ltd.
- Fine grain structures for tough rare earth permanent magnets12 Jun 2025US 2025/0191819 A1
- Feedstock and heterogeneous structures for tough rare earth permanent magnets and production process therefor20 Mar 2025US 2025/0095914 A1
- Composite magnetic material and inductor using the same29 Jun 2023US 2023/0207168 A1Murata Manufacturing Co., Ltd.
- Rare-earth sintered magnet5 Jan 2023US 2023/0005646 A1Shin-Etsu Chemical Co., Ltd.
Most cited
By later US patents
- Alloy ingot for permanent magnet, anisotropic powders for permanent magnet, method for producing same and permanent magnet59US 5,383,978 ASantoku Metal Industry Co., Ltd. · 1995
- Rare earth permanent magnet and method for making same56US 6,302,939 B1Magnequench International, Inc. · 2001
- Method of making material alloy for iron-based rare earth magnet35US 6,695,929 B2Sumitomo Special Co., Ltd. · 2004
- Magnetic material and bonded magnet22US 5,716,462 AKabushiki Kaisha Toshiba · 1998
- Magnetic powder, permanent magnet produced therefrom and process for producing them22US 6,139,765 ASeiko Epson Corporation · 2000