H01F 1/0552
With a protective layer
Official title: {with a protective layer}
H01F1/0552 (With a protective layer) appears on 47 US grants and 40 published applications in this corpus.
Search patents in H01F- Granted patents
- 47
- Published applications
- 40
- Assignees
- 36
- Inventors
- 115
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 1 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 1 | 0 |
| 2007 | 2 | 3 |
| 2008 | 0 | 0 |
| 2009 | 1 | 3 |
| 2010 | 0 | 1 |
| 2011 | 0 | 5 |
| 2012 | 1 | 2 |
| 2013 | 1 | 0 |
| 2014 | 1 | 2 |
| 2015 | 3 | 2 |
| 2016 | 2 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 4 |
| 2021 | 1 | 2 |
| 2022 | 3 | 2 |
| 2023 | 2 | 1 |
| 2024 | 0 | 4 |
| 2025 | 2 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Magnetic polishing slurry and method for polishing a workpiece10 Feb 2026US 12,545,810 B2Taiwan Semiconductor Manufacturing Company.Ltd
- Iron-based nanoparticles and grains30 Dec 2025US 12,512,238 B2Regents of the University of Minnesota
- Production method of rare earth magnet4 Nov 2025US 12,460,278 B2Toyota Jidosha Kabushiki Kaisha
- Iron-based nanoparticles and grains5 Dec 2023US 11,837,393 B2Regents of the University of Minnesota
- Magnetic powder25 Jul 2023US 11,710,586 B2Nichia Corporation
- Method of producing magnetic powder, magnetic material for magnetic field amplification, and magnetic material for hyper-high frequency absorption9 Jan 2025US 2025/0014791 A1Nichia Corporation
- Method of producing phosphate-coated smfen-based anisotropic magnetic powder4 Apr 2024US 2024/0112838 A1Nichia Corporation
- Method of producing rare earth magnetic powder and rare earth magnetic powder22 Feb 2024US 2024/0062936 A1Nichia Corporation
- Iron-based nanoparticles and grains15 Feb 2024US 2024/0055165 A1Regents of the University of Minnesota
- Production method for phosphate-coated smfen-based anisotropic magnetic powder and phosphate-coated smfen-based anisotropic magnetic powder4 Jan 2024US 2024/0006101 A1Nichia Corporation
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
- Method of making magnets by polymer-coating magnetic powder58US 3,933,536 AGeneral Electric Company · 1976
- Moldable microcapsule that contains a high percentage of solid core material, and method of manufacture thereof43US 5,069,972 A1991
- Passivated rare earth magnet or magnetic material compositions30US 4,988,755 AThe B. F. Goodrich Company · 1991