H02K 21/44
With armature windings wound upon the magnets
Official title: with armature windings wound upon the magnets
H02K21/44 (With armature windings wound upon the magnets) appears on 249 US grants and 218 published applications in this corpus.
Search patents in H02K- Granted patents
- 249
- Published applications
- 218
- Assignees
- 152
- Inventors
- 464
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 7 | 0 |
| 1999 | 7 | 0 |
| 2000 | 8 | 0 |
| 2001 | 5 | 0 |
| 2002 | 4 | 2 |
| 2003 | 4 | 7 |
| 2004 | 5 | 2 |
| 2005 | 4 | 4 |
| 2006 | 2 | 3 |
| 2007 | 1 | 7 |
| 2008 | 3 | 8 |
| 2009 | 5 | 16 |
| 2010 | 4 | 11 |
| 2011 | 12 | 8 |
| 2012 | 7 | 9 |
| 2013 | 3 | 12 |
| 2014 | 12 | 15 |
| 2015 | 6 | 7 |
| 2016 | 9 | 16 |
| 2017 | 7 | 15 |
| 2018 | 11 | 14 |
| 2019 | 18 | 9 |
| 2020 | 19 | 13 |
| 2021 | 10 | 8 |
| 2022 | 9 | 8 |
| 2023 | 4 | 15 |
| 2024 | 12 | 7 |
| 2025 | 10 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- A generator and a method for generating electricity with a generator20 Mar 2025US 2025/0092852 A1Ori Solution Oy
- Axial Flux Motor25 Jul 2024US 2024/0250568 A1Carnegie Mellon University
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- Motorized scroll wheel for an input device20 Jun 2024US 2024/0201801 A1Logitech Europe S. A.
Most cited
By later US patents
- Electrical machine82US 6,664,704 B22003
- Synchronous motor75US 4,206,374 AU. S. Philips Corporation · 1980
- Methods for controlling the path of magnetic flux from a permanent magnet and devices incorporating the same68US 6,342,746 B12002
- Doubly salient variable reluctance machine with stationary permanent magnets or auxiliary field windings67US 5,672,925 AElectric Power Research Institute, Inc. · 1997
- Low inductance electrical machine67US 6,177,746 B12001