H02K 1/2733
Annular magnets
H02K1/2733 (Annular magnets) appears on 379 US grants and 435 published applications in this corpus.
Search patents in H02K- Granted patents
- 379
- Published applications
- 435
- Assignees
- 243
- Inventors
- 1,027
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 8 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 6 | 0 |
| 2001 | 6 | 1 |
| 2002 | 4 | 9 |
| 2003 | 7 | 13 |
| 2004 | 9 | 11 |
| 2005 | 8 | 13 |
| 2006 | 11 | 18 |
| 2007 | 10 | 17 |
| 2008 | 10 | 18 |
| 2009 | 11 | 10 |
| 2010 | 11 | 12 |
| 2011 | 10 | 8 |
| 2012 | 4 | 8 |
| 2013 | 8 | 8 |
| 2014 | 7 | 18 |
| 2015 | 7 | 21 |
| 2016 | 8 | 14 |
| 2017 | 18 | 27 |
| 2018 | 16 | 28 |
| 2019 | 27 | 30 |
| 2020 | 25 | 30 |
| 2021 | 24 | 29 |
| 2022 | 23 | 26 |
| 2023 | 14 | 18 |
| 2024 | 20 | 18 |
| 2025 | 14 | 17 |
| 2026 | 6 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Permanent magnet for an electric machine and method of making the same4 Aug 2026US 12,700,761 B2BorgWarner Inc.
- Rotary electric machine, motor, rotor, and permanent magnet motor9 Jun 2026US 12,651,937 B2Kabushiki Kaisha Toshiba
- Composite structures for electric motors2 Jun 2026US 12,646,987 B2The Texas A&M University System
- Power tool with compact motor assembly26 May 2026US 12,640,620 B2Black & Decker Inc.
- Rotor with plastic hub10 Mar 2026US 12,573,893 B2MAGNA Auteca GmbH
- Power tool with compact motor assembly24 Sep 2026US 2026/0291334 A1Black & Decker Inc.
- A rotor assembly20 Aug 2026US 2026/0246334 A1Dyson Technology Limited
- Permanent magnet rotor and method for manufacturing permanent magnet rotor23 Jul 2026US 2026/0213596 A1Mitsubishi Electric Corporation
- Motor for a mobile robot2 Jul 2026US 2026/0189090 A1
- Micro-axial pump with press-fit impeller30 Apr 2026US 2026/0122846 A1Hewlett Packard Enterprise Development LP
Most cited
By later US patents
- Magnetically coded device145US 5,631,093 AGeneral Motors Corporation · 1997
- Method of manufacturing a rotor122US 5,500,994 AMabuchi Motor Co., Ltd. · 1996
- Method for thermomagnetic encoding of permanent magnet materials79US 5,492,572 AGeneral Motors Corporation · 1996
- Rotor shield for magnetic rotary machine71US 6,657,348 B2Capstone Turbine Corporation · 2003
- Rotors with retaining cylinders and reduced harmonic field effect losses58US 5,801,470 AGeneral Electric Company · 1998