H02K 21/02
Details
H02K21/02 (Details) appears on 980 US grants and 976 published applications in this corpus.
Search patents in H02K- Granted patents
- 980
- Published applications
- 976
- Assignees
- 402
- Inventors
- 1,598
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 9 | 0 |
| 1997 | 10 | 0 |
| 1998 | 24 | 0 |
| 1999 | 21 | 0 |
| 2000 | 27 | 0 |
| 2001 | 25 | 3 |
| 2002 | 25 | 30 |
| 2003 | 18 | 23 |
| 2004 | 27 | 27 |
| 2005 | 25 | 21 |
| 2006 | 20 | 27 |
| 2007 | 9 | 37 |
| 2008 | 21 | 27 |
| 2009 | 23 | 38 |
| 2010 | 30 | 45 |
| 2011 | 37 | 41 |
| 2012 | 43 | 35 |
| 2013 | 22 | 49 |
| 2014 | 21 | 43 |
| 2015 | 33 | 29 |
| 2016 | 33 | 26 |
| 2017 | 37 | 61 |
| 2018 | 35 | 49 |
| 2019 | 62 | 69 |
| 2020 | 60 | 51 |
| 2021 | 49 | 51 |
| 2022 | 46 | 59 |
| 2023 | 32 | 36 |
| 2024 | 43 | 50 |
| 2025 | 40 | 27 |
| 2026 | 23 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electric machine6 Oct 2026US 12,756,284 B2Schaeffler Technologies AG & Co. KG
- Brushless DC motor power tool with combined PCB design29 Sep 2026US 12,749,945 B2Milwaukee Electric Tool Corporation
- Crown brushless motor device and method29 Sep 2026US 12,749,954 B2Concept Design
- Electric axial flux machine with pretensioned stator components, and electric machine assembly comprising such an electric axial flux machine15 Sep 2026US 12,738,824 B2Schaeffler Technologies AG & Co. KG
- Axial air gap electric rotary motor25 Aug 2026US 12,719,341 B2Moog Inc.
- Flux reversing motor assemblies including inner stator assemblies8 Oct 2026US 2026/0312476 A1
- Superconducting ultra power efficient radial fan augmented nano-aerodrive (superfan)1 Oct 2026US 2026/0298178 A1Sonic Blue Aerospace, Inc.
- Rotating electric machine17 Sep 2026US 2026/0280394 A1Thk Co., Ltd.
- State limiting an appliance motor17 Sep 2026US 2026/0280458 A1Haier US Appliance Solutions, Inc.
- Electric machine with transition zone field winding27 Aug 2026US 2026/0254333 A1
Most cited
By later US patents
- 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
- Air gap control systems and methods405US 10,193,429 B2Boulder Wind Power, Inc. · 2019
- Hybrid alternator213US 5,747,909 AEcoair Corp. · 1998
- Magnetic drive devices, and related systems and methods157US 10,008,912 B2National Oilwell Varco, L. P. · 2018