H01F 7/0231
Magnetic circuits with pm for power or force generation
Official title: {Magnetic circuits with PM for power or force generation}
H01F7/0231 (Magnetic circuits with pm for power or force generation) appears on 1,262 US grants and 1,515 published applications in this corpus.
Search patents in H01F- Granted patents
- 1,262
- Published applications
- 1,515
- Assignees
- 688
- Inventors
- 2,550
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 7 | 0 |
| 1992 | 9 | 0 |
| 1993 | 8 | 0 |
| 1994 | 8 | 0 |
| 1995 | 9 | 0 |
| 1996 | 8 | 0 |
| 1997 | 6 | 0 |
| 1998 | 2 | 0 |
| 1999 | 8 | 0 |
| 2000 | 8 | 0 |
| 2001 | 8 | 3 |
| 2002 | 12 | 13 |
| 2003 | 10 | 13 |
| 2004 | 13 | 10 |
| 2005 | 16 | 13 |
| 2006 | 13 | 19 |
| 2007 | 7 | 12 |
| 2008 | 7 | 28 |
| 2009 | 13 | 40 |
| 2010 | 25 | 33 |
| 2011 | 23 | 60 |
| 2012 | 24 | 85 |
| 2013 | 61 | 61 |
| 2014 | 55 | 80 |
| 2015 | 62 | 85 |
| 2016 | 66 | 82 |
| 2017 | 65 | 74 |
| 2018 | 59 | 87 |
| 2019 | 67 | 93 |
| 2020 | 71 | 104 |
| 2021 | 71 | 107 |
| 2022 | 80 | 93 |
| 2023 | 96 | 95 |
| 2024 | 104 | 73 |
| 2025 | 85 | 85 |
| 2026 | 32 | 67 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of manufacturing permanent magnets6 Oct 2026US 12,755,879 B2
- Token presentation system8 Sep 2026US 12,727,688 B1
- Accessory mounts25 Aug 2026US 12,716,690 B1Magne-Tech, LLC
- Rotating magnet assembly in a foldable device25 Aug 2026US 12,717,385 B2Microsoft Technology Licensing, LLC
- External adjustment device18 Aug 2026US 12,708,406 B2NuVasive, Inc.
- Systems and methods for deploying and retrieving magnetically coupled temporary wireline fiber for broadside wave detection8 Oct 2026US 2026/0309022 A1
- Modular pet leash1 Oct 2026US 2026/0293853 A1
- Separable fastening devices, systems, and methods1 Oct 2026US 2026/0294050 A1Patmos Enterprises, LLC
- Field configurable autonomous land surface craft1 Oct 2026US 2026/0296612 A1The United States of America as represented by the Secretary of the Navy
- Device and system for retrieving firearm shells1 Oct 2026US 2026/0302029 A1
Most cited
By later US patents
- Methods for forming anastomoses using magnetic force364US 6,352,543 B1Ventrica, Inc. · 2002
- Fitting device for accessory264US 5,367,891 AYugen Kaisha Furuyama Shouji · 1994
- Mechanical locking of floor panels with vertical snap folding225US 8,353,140 B2Välinge Innovation AB · 2013
- Dynamically stable magnetic suspension/bearing system205US 5,495,221 AThe Regents of the University of California · 1996
- Accessory device for peek mode202US 8,264,310 B2Apple Inc. · 2012