H01F 7/021
Construction of pm
Official title: {Construction of PM (H01F7/0278 takes precedence; PM compositions H01F1/032)}
H01F7/021 (Construction of pm) appears on 471 US grants and 566 published applications in this corpus.
Search patents in H01F- Granted patents
- 471
- Published applications
- 566
- Assignees
- 319
- Inventors
- 1,150
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 0 | 0 |
| 1989 | 7 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 6 |
| 2004 | 0 | 2 |
| 2005 | 6 | 6 |
| 2006 | 2 | 5 |
| 2007 | 4 | 6 |
| 2008 | 5 | 9 |
| 2009 | 3 | 16 |
| 2010 | 15 | 13 |
| 2011 | 5 | 5 |
| 2012 | 13 | 20 |
| 2013 | 17 | 25 |
| 2014 | 12 | 16 |
| 2015 | 14 | 36 |
| 2016 | 17 | 40 |
| 2017 | 24 | 45 |
| 2018 | 20 | 27 |
| 2019 | 34 | 35 |
| 2020 | 24 | 43 |
| 2021 | 38 | 38 |
| 2022 | 37 | 41 |
| 2023 | 34 | 43 |
| 2024 | 40 | 38 |
| 2025 | 28 | 30 |
| 2026 | 14 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Construction magnetic panel and method of manufacture22 Sep 2026US 12,744,144 B2Cuby Technologies Inc
- MRI compatible magnet for cochlear implant15 Sep 2026US 12,734,357 B2Zhejiang Nurotron Biotechnology Co., Ltd.
- Repelling magnet assembly25 Aug 2026US 12,714,873 B1
- Magnetic systems incorporating electropermanent magnet arrays18 Aug 2026US 12,712,104 B2Apple Inc.
- Thermally stable, cladded permanent magnets, and compositions and methods for making the same11 Aug 2026US 12,706,235 B2HRL Laboratories, LLC
- Low eddy current loss permanent magnet assembly for permanent magnet motor3 Sep 2026US 2026/0260796 A1Yantai Dongxing Magnetic Materials Inc.
- Variable field magnetic couplers and methods for engaging a ferromagnetic workpiece27 Aug 2026US 2026/0253824 A1Magswitch Automation Company
- Battery Gripper27 Aug 2026US 2026/0254034 A1LG Energy Solution, Ltd.
- Electronic product protective case and sheet thereof, and method for manufacturing sheet13 Aug 2026US 2026/0238709 A1Shenzhen Lingyi Innovation Technology Co., Ltd
- Eddy current retarder6 Aug 2026US 2026/0225460 A1Nippon Steel Corporation
Most cited
By later US patents
- Magnetic tool holder137US 4,826,059 A1989
- Magnetic garment closure system and method for producing same137US 5,604,960 A1997
- Magnetic positioning for inductive coupling132US 8,766,484 B2Access Business Group International LLC · 2014
- Rotary input device85US 9,437,357 B2Alps Electric Co., Ltd. · 2016
- Correlated magnetic prosthetic device and method for using the correlated magnetic prosthetic device81US 7,817,004 B2Cedar Ridge Research, LLC · 2010