H01F 1/0573
Obtained by reduction or by hydrogen decrepitation or embrittlement
Official title: {obtained by reduction or by hydrogen decrepitation or embrittlement}
H01F1/0573 (Obtained by reduction or by hydrogen decrepitation or embrittlement) appears on 167 US grants and 144 published applications in this corpus.
Search patents in H01F- Granted patents
- 167
- Published applications
- 144
- Assignees
- 104
- Inventors
- 423
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 7 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 6 | 0 |
| 1995 | 9 | 0 |
| 1996 | 10 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 0 |
| 2002 | 4 | 7 |
| 2003 | 3 | 5 |
| 2004 | 2 | 7 |
| 2005 | 2 | 6 |
| 2006 | 5 | 4 |
| 2007 | 3 | 6 |
| 2008 | 3 | 2 |
| 2009 | 2 | 3 |
| 2010 | 2 | 1 |
| 2011 | 6 | 3 |
| 2012 | 4 | 6 |
| 2013 | 2 | 10 |
| 2014 | 2 | 13 |
| 2015 | 6 | 10 |
| 2016 | 5 | 7 |
| 2017 | 7 | 1 |
| 2018 | 3 | 2 |
| 2019 | 6 | 2 |
| 2020 | 3 | 1 |
| 2021 | 3 | 12 |
| 2022 | 1 | 11 |
| 2023 | 4 | 6 |
| 2024 | 7 | 12 |
| 2025 | 5 | 5 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- R-T-B-based rare earth magnet particles, process for producing the R-T-B-based rare earth magnet particles, and bonded magnet24 Feb 2026US 12,562,297 B2Toda Kogyo Corporation
- R-T-B-based permanent magnet and method for producing same, motor, and automobile10 Feb 2026US 12,548,700 B2TDK Corporation
- 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.
- Sintered neodymium iron boron magnet and method of preparing the same20 Jan 2026US 12,531,175 B2Jl Mag Rare Earth Co., Ltd.
- R-T-B permanent magnet material and preparation method therefor and use thereof30 Sep 2025US 12,431,268 B2FUJIAN GOLDEN DRAGON RARE-EARTH Co., Ltd.
- Method for producing r-t-q system sintered magnet13 Aug 2026US 2026/0237544 A1Proterial, Ltd.
- R-t-b based permanent magnet and method of manufacturing the same28 May 2026US 2026/0148884 A1TDK Corporation
- High-strength r-t-b rare earth permanent magnet having amorphous grain boundary phase and preparation method therefor11 Dec 2025US 2025/0378977 A1Zhejiang Innuovo Magnetics Co., Ltd.
- Hydrogen decrepitation apparatuses and hydrogen recycling methods27 Nov 2025US 2025/0360560 A1Baotou Research Institute of Rare Earths
- High-performance and high-thermal-stability sintered NdFeB magnet and preparation method thereof3 Jul 2025US 2025/0218630 A1Yantai Dongxing Magnetic Materials Inc.
Most cited
By later US patents
- Thin film solar cell including a spatially modulated intrinsic layer119US 4,816,082 AEnergy Conversion Devices, Inc. · 1989
- 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
- Method of preparing micro-structured powder for bonded magnets having high coercivity and magnet powder prepared by the same54US 7,163,591 B2Jahwa Electronics Co., Ltd. · 2007
- Rare earth-iron-boron magnet powder and process of producing same47US 4,981,532 AMitsubishi Kinzoku Kabushiki Kaisha · 1991
- Process for producing the rare earth alloy powders34US 4,770,702 ASumitomo Special Metals Co., Ltd. · 1988