H02K 21/046
With rotating permanent magnets and stationary field winding
Official title: {with rotating permanent magnets and stationary field winding}
H02K21/046 (With rotating permanent magnets and stationary field winding) appears on 153 US grants and 141 published applications in this corpus.
Search patents in H02K- Granted patents
- 153
- Published applications
- 141
- Assignees
- 86
- Inventors
- 240
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 4 | 3 |
| 2003 | 2 | 4 |
| 2004 | 3 | 6 |
| 2005 | 6 | 5 |
| 2006 | 7 | 4 |
| 2007 | 5 | 6 |
| 2008 | 1 | 1 |
| 2009 | 3 | 6 |
| 2010 | 4 | 10 |
| 2011 | 7 | 8 |
| 2012 | 8 | 2 |
| 2013 | 3 | 8 |
| 2014 | 4 | 6 |
| 2015 | 3 | 1 |
| 2016 | 9 | 8 |
| 2017 | 9 | 18 |
| 2018 | 7 | 8 |
| 2019 | 14 | 5 |
| 2020 | 5 | 7 |
| 2021 | 9 | 10 |
| 2022 | 5 | 4 |
| 2023 | 1 | 2 |
| 2024 | 6 | 4 |
| 2025 | 3 | 3 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Brushless DC motor power tool with combined PCB design29 Sep 2026US 12,749,945 B2Milwaukee Electric Tool Corporation
- Axial air gap electric rotary motor25 Aug 2026US 12,719,341 B2Moog Inc.
- Rotator16 Dec 2025US 12,500,478 B2Mitsubishi Electric Corporation
- Testing apparatus for active current control-type non-contact superconductive exciter having hybrid magnet installed therein, and high-temperature superconducting rotating machine using same2 Sep 2025US 12,407,239 B2Industry-Academic Cooperation Foundation Jeju National University
- Multi-excitation-source axial-flux permanent-magnet motor with partitioned, hierarchical, and variable poles, and variable-condition driving control system6 May 2025US 12,294,258 B2Jiangsu University
- Electric machine with transition zone field winding27 Aug 2026US 2026/0254333 A1
- Crown brushless motor device and method19 Mar 2026US 2026/0081508 A1Concept Design
- Motor4 Dec 2025US 2025/0373134 A1Mitsubishi Electric Corporation
- Brushless dc motor power tool with combined pcb design24 Jul 2025US 2025/0239911 A1Milwaukee Electric Tool Corporation
- Multi-excitation-source axial-flux permanent-magnet motor with partitioned, hierarchical, and variable poles, and variable-condition driving control system6 Mar 2025US 2025/0079959 A1Jiangsu University
Most cited
By later US patents
- Electric machine having an integrally continuous stator winding and stator slot bridges1,193US 6,936,948 B2Pratt & Whitney Canada Corp. · 2005
- Hybrid excited generator with flux control of consequent-pole rotor88US 4,656,379 AThe Garrett Corporation · 1987
- Hybrid electric machine with two rotors, permanent magnet poles and controllable field current80US 6,531,799 B1Ford Global Technologies, LLC · 2003
- Versatile AC dynamo-electric machine73US 5,838,085 APrecise Power Corporation · 1998
- Architecture for electric machine69US 6,965,183 B2Pratt & Whitney Canada Corp. · 2005