H02K 21/14
With magnets rotating within the armatures
Official title: with magnets rotating within the armatures
H02K21/14 (With magnets rotating within the armatures) appears on 2,726 US grants and 3,257 published applications in this corpus.
Search patents in H02K- Granted patents
- 2,726
- Published applications
- 3,257
- Assignees
- 1,074
- Inventors
- 5,558
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 15 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 7 | 0 |
| 1981 | 9 | 0 |
| 1982 | 7 | 0 |
| 1983 | 6 | 0 |
| 1984 | 5 | 0 |
| 1985 | 6 | 0 |
| 1986 | 7 | 0 |
| 1987 | 28 | 0 |
| 1988 | 17 | 0 |
| 1989 | 17 | 0 |
| 1990 | 10 | 0 |
| 1991 | 13 | 0 |
| 1992 | 12 | 0 |
| 1993 | 12 | 0 |
| 1994 | 15 | 0 |
| 1995 | 20 | 0 |
| 1996 | 19 | 0 |
| 1997 | 21 | 0 |
| 1998 | 31 | 0 |
| 1999 | 33 | 0 |
| 2000 | 34 | 0 |
| 2001 | 31 | 11 |
| 2002 | 38 | 64 |
| 2003 | 34 | 46 |
| 2004 | 53 | 69 |
| 2005 | 58 | 60 |
| 2006 | 52 | 74 |
| 2007 | 35 | 60 |
| 2008 | 39 | 71 |
| 2009 | 44 | 72 |
| 2010 | 58 | 77 |
| 2011 | 50 | 82 |
| 2012 | 35 | 69 |
| 2013 | 67 | 100 |
| 2014 | 62 | 122 |
| 2015 | 54 | 86 |
| 2016 | 67 | 98 |
| 2017 | 99 | 182 |
| 2018 | 87 | 149 |
| 2019 | 156 | 215 |
| 2020 | 157 | 259 |
| 2021 | 163 | 260 |
| 2022 | 201 | 267 |
| 2023 | 180 | 229 |
| 2024 | 228 | 235 |
| 2025 | 192 | 178 |
| 2026 | 130 | 122 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rotor apparatus for an electric machine6 Oct 2026US 12,756,251 B2Jaguar Land Rover Limited
- 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
- Rotary electric machine29 Sep 2026US 12,749,934 B2Nippon Steel Corporation
- Brushless motor29 Sep 2026US 12,749,941 B2Dyson Technology Limited
- 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.
- Thixotropic potting compound for fixing a permanent magnet in a rotor of a permanently excited synchronous machine8 Oct 2026US 2026/0312472 A1Innomotics GmbH
- Rotor of a permanently excited synchronous machine and permanently excited synchronous machine with such a rotor8 Oct 2026US 2026/0312473 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