H02K 21/222
Flywheel magnetos
Official title: {Flywheel magnetos}
H02K21/222 (Flywheel magnetos) appears on 195 US grants and 232 published applications in this corpus.
Search patents in H02K- Granted patents
- 195
- Published applications
- 232
- Assignees
- 138
- Inventors
- 472
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 2 |
| 2002 | 2 | 9 |
| 2003 | 5 | 2 |
| 2004 | 4 | 9 |
| 2005 | 7 | 9 |
| 2006 | 9 | 16 |
| 2007 | 6 | 9 |
| 2008 | 9 | 10 |
| 2009 | 5 | 13 |
| 2010 | 11 | 17 |
| 2011 | 8 | 7 |
| 2012 | 6 | 11 |
| 2013 | 14 | 12 |
| 2014 | 11 | 8 |
| 2015 | 4 | 11 |
| 2016 | 2 | 7 |
| 2017 | 6 | 5 |
| 2018 | 10 | 8 |
| 2019 | 5 | 8 |
| 2020 | 6 | 12 |
| 2021 | 2 | 14 |
| 2022 | 9 | 10 |
| 2023 | 8 | 7 |
| 2024 | 12 | 10 |
| 2025 | 9 | 4 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Flat-type effect module and stage light fixture with same26 May 2026US 12,640,601 B2Guangzhou Haoyang Electronic Co., Ltd.
- Electric actuator24 Feb 2026US 12,562,630 B2Sonceboz Mechatronics Boncourt
- Motor-generator, power generation apparatus, and mobility device20 Jan 2026US 12,529,331 B2Denso Corporation
- Flywheel system with stationary shaft30 Dec 2025US 12,512,737 B2WattsUp Power A/S
- Electric work machine4 Nov 2025US 12,463,473 B2Makita Corporation
- Integrated Assembly of a Gearbox and Electric Motor with Shared Cooling Features6 Aug 2026US 2026/0229970 A1Supernal, LLC
- Rotor magnet and brushless motor8 Jan 2026US 2026/0012050 A1Mabuchi Motor Co., Ltd.
- Fan device for radiator23 Oct 2025US 2025/0327459 A1Mahle International GmbH
- Composite rotors and methods of making composite rotors10 Jul 2025US 2025/0226734 A1Hamilton Sundstrand Corporation
- Hedge trimmer3 Jul 2025US 2025/0212733 A1Nanjing Chervon Industry Co., Ltd.
Most cited
By later US patents
- Encoder alternator139US 7,362,018 B1Brunswick Corporation · 2008
- Dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine77US 6,924,574 B2Wisconsin Alumni Research Foundation · 2005
- Brushless direct-current motor of radial core type having a structure of double rotors and method for making the same67US 6,992,419 B2Amotech Co., Ltd. · 2006
- Stator for permanent magnet electric motor using soft magnetic composites52US 7,755,244 B2UQM Technologies, Inc. · 2010
- Multi-rotor synchronous machine permitting relative movement between rotors51US 6,998,757 B2Denso Corporation · 2006