H02K 21/12
Synchronous motors having permanent magnets: with stationary armatures and rotating magnets
Official title: with stationary armatures and rotating magnets
H02K21/12 (Synchronous motors having permanent magnets: with stationary armatures and rotating magnets) appears on 5,629 US grants and 6,563 published applications in this corpus.
Search patents in H02K- Granted patents
- 5,629
- Published applications
- 6,563
- Assignees
- 2,011
- Inventors
- 10,338
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 17 | 0 |
| 1978 | 11 | 0 |
| 1979 | 5 | 0 |
| 1980 | 14 | 0 |
| 1981 | 15 | 0 |
| 1982 | 16 | 0 |
| 1983 | 11 | 0 |
| 1984 | 17 | 0 |
| 1985 | 16 | 0 |
| 1986 | 16 | 0 |
| 1987 | 49 | 0 |
| 1988 | 30 | 0 |
| 1989 | 43 | 0 |
| 1990 | 25 | 0 |
| 1991 | 35 | 0 |
| 1992 | 36 | 0 |
| 1993 | 42 | 0 |
| 1994 | 47 | 0 |
| 1995 | 44 | 0 |
| 1996 | 49 | 0 |
| 1997 | 64 | 0 |
| 1998 | 96 | 0 |
| 1999 | 86 | 0 |
| 2000 | 77 | 0 |
| 2001 | 71 | 24 |
| 2002 | 77 | 112 |
| 2003 | 67 | 89 |
| 2004 | 120 | 134 |
| 2005 | 102 | 139 |
| 2006 | 113 | 169 |
| 2007 | 75 | 139 |
| 2008 | 83 | 164 |
| 2009 | 101 | 188 |
| 2010 | 126 | 216 |
| 2011 | 138 | 195 |
| 2012 | 124 | 189 |
| 2013 | 156 | 205 |
| 2014 | 137 | 230 |
| 2015 | 120 | 200 |
| 2016 | 133 | 212 |
| 2017 | 177 | 311 |
| 2018 | 173 | 302 |
| 2019 | 303 | 408 |
| 2020 | 305 | 455 |
| 2021 | 308 | 443 |
| 2022 | 358 | 477 |
| 2023 | 321 | 448 |
| 2024 | 427 | 469 |
| 2025 | 396 | 397 |
| 2026 | 244 | 248 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Stator arrangement for a radial flux motor6 Oct 2026US 12,756,248 B2BorgWarner Inc.
- Rotor apparatus for an electric machine6 Oct 2026US 12,756,251 B2Jaguar Land Rover Limited
- Coil assembly of an integrated motor pump or turbine having reduced thermal stress at cryogenic temperatures6 Oct 2026US 12,756,257 B2Flowserve Pte. Ltd.
- Electric propulsion device with hollow shaft and cooling blades and support body with heat member on outer surface29 Sep 2026US 12,747,029 B2Mitsubishi Heavy Industries, Ltd.
- Ultra-short electromechanical servo mechanism for mechanical fault self-recovery29 Sep 2026US 12,747,779 B2Beijing Insitute of Preicsion Mechatronics and Controls
- Power tool with compact motor assembly8 Oct 2026US 2026/0307221 A1Black & Decker Inc.
- Rotary electric machine8 Oct 2026US 2026/0312442 A1Denso Corporation
- Rotor, motor, and electronic device8 Oct 2026US 2026/0312448 A1MINEBEA MITSUMI Inc.
- Engine cooling fan motor for vehicle8 Oct 2026US 2026/0312466 A1New Motech Co., Ltd.
- Thixotropic potting compound for fixing a permanent magnet in a rotor of a permanently excited synchronous machine8 Oct 2026US 2026/0312472 A1Innomotics GmbH
Most cited
By later US patents
- Rotary and linear motor1,441US 6,429,611 B12002
- Methods and apparatus for increasing power of permanent magnet motors1,432US 6,777,838 B22004
- Electric machine having an integrally continuous stator winding and stator slot bridges1,193US 6,936,948 B2Pratt & Whitney Canada Corp. · 2005
- Architecture for electric machine1,149US 7,583,063 B2Pratt & Whitney Canada Corp. · 2009
- Method and apparatus for cardiac blood flow assistance452US 5,964,694 AGuidant Corporation · 1999