H01F 1/0572
With a protective layer
Official title: {with a protective layer}
H01F1/0572 (With a protective layer) appears on 117 US grants and 107 published applications in this corpus.
Search patents in H01F- Granted patents
- 117
- Published applications
- 107
- Assignees
- 78
- Inventors
- 265
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 6 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 8 | 0 |
| 1993 | 10 | 0 |
| 1994 | 2 | 0 |
| 1995 | 7 | 0 |
| 1996 | 7 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 1 |
| 2004 | 2 | 3 |
| 2005 | 1 | 4 |
| 2006 | 1 | 5 |
| 2007 | 3 | 8 |
| 2008 | 2 | 4 |
| 2009 | 3 | 2 |
| 2010 | 2 | 2 |
| 2011 | 3 | 10 |
| 2012 | 3 | 22 |
| 2013 | 11 | 5 |
| 2014 | 0 | 5 |
| 2015 | 8 | 5 |
| 2016 | 1 | 2 |
| 2017 | 4 | 1 |
| 2018 | 2 | 1 |
| 2019 | 4 | 5 |
| 2020 | 3 | 5 |
| 2021 | 0 | 3 |
| 2022 | 2 | 5 |
| 2023 | 5 | 1 |
| 2024 | 2 | 2 |
| 2025 | 1 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Corrosion-resistant permanent magnet for an intravascular blood pump8 Sep 2026US 12,731,708 B2Abiomed Europe GmbH
- Method for manufacturing sintered magnet and sintered magnet14 Apr 2026US 12,603,202 B2Beijing Zhong Ke San Huan Hi-Tech Co., Ltd.
- Method for producing magnet powder and sintered magnet produced by the same19 Aug 2025US 12,394,546 B2LG Chem.Ltd.
- Method for preparing rare-earth permanent magnet by hot press molding23 Apr 2024US 11,967,455 B2Jiangxi Kaiyuan Automatic Equipment Co., Ltd.
- NdFeB alloy powder for forming high-coercivity sintered NdFeB magnets and use thereof5 Mar 2024US 11,923,114 B2Yantai Shougang Magnetic Materials Inc.
- Rare earth magnet and manufacturing method of the same1 Oct 2026US 2026/0302060 A1Honda Motor Co., Ltd.
- Rare earth alloy powder and sintered magnet with reduction-diffusion method using oil-soluble aliphatic organic acid/organic acid-ammonium mixture9 Jul 2026US 2026/0196391 A1Green Strategic Materials Co., Ltd.
- Rare earth magnet and method for manufacturing the same7 Aug 2025US 2025/0249504 A1Honda Motor Co., Ltd.
- Rare earth magnet and method for manufacturing the same7 Aug 2025US 2025/0253079 A1Honda Motor Co., Ltd.
- Method for Manufacturing Sintered Magnet and Sintered Magnet29 Aug 2024US 2024/0290522 A1Beijing Zhong Ke San Huan Hi-Tech Co., Ltd.
Most cited
By later US patents
- Method of making environmentally stable reactive alloy powders127US 5,372,629 AIowa State University Research Foundation, Inc. · 1994
- Environmentally stable reactive alloy powders and method of making same91US 5,811,187 AIowa State University Research Foundation, Inc. · 1998
- Process for producing magnets having improved corrosion resistance44US 4,837,114 ASumitomo Special Metals Co., Ltd. · 1989
- Moldable microcapsule that contains a high percentage of solid core material, and method of manufacture thereof43US 5,069,972 A1991
- Method of consolidating FeNdB magnets41US 4,808,224 ACeracon, Inc. · 1989