H02K 3/42
Means for preventing or reducing eddy-current losses in the winding heads
Official title: Means for preventing or reducing eddy-current losses in the winding heads, e.g. by shielding
H02K3/42 (Means for preventing or reducing eddy-current losses in the winding heads) appears on 102 US grants and 117 published applications in this corpus.
Search patents in H02K- Granted patents
- 102
- Published applications
- 117
- Assignees
- 77
- Inventors
- 255
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 0 |
| 2005 | 1 | 2 |
| 2006 | 0 | 1 |
| 2007 | 1 | 3 |
| 2008 | 0 | 0 |
| 2009 | 0 | 3 |
| 2010 | 2 | 3 |
| 2011 | 3 | 3 |
| 2012 | 2 | 3 |
| 2013 | 3 | 3 |
| 2014 | 1 | 2 |
| 2015 | 2 | 2 |
| 2016 | 0 | 2 |
| 2017 | 1 | 4 |
| 2018 | 3 | 6 |
| 2019 | 10 | 22 |
| 2020 | 7 | 12 |
| 2021 | 16 | 10 |
| 2022 | 10 | 11 |
| 2023 | 8 | 8 |
| 2024 | 7 | 8 |
| 2025 | 3 | 5 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Heatsink with slits to reduce eddy current losses17 Mar 2026US 12,580,452 B2Board of Regents, The University of Texas System
- Rotary electrical machine23 Jul 2026US 2026/0213600 A1Panasonic Intellectual Property Management Co., Ltd.
- Multi-pole poly-phase transverse flux electric machine (motor or generator) with a 3d magnetic flux path29 Jan 2026US 2026/0031668 A1Modal Motors, Inc.
- Electric motor assembly having motor controller with inverter and current sensors7 Aug 2025US 2025/0253743 A1American Axle & Manufacturing, Inc.
- Winding structure for rotating electric machine and method of manufacturing the same31 Jul 2025US 2025/0246960 A1Honda Motor Co., Ltd.
- Mechanism for reducing eddy current losses in sealless pumps and turbines having directly driven impellers10 Jul 2025US 2025/0226716 A1Flowserve Pte. Ltd.
Most cited
By later US patents
- Stator core cooling for dynamoelectric machines58US 4,208,597 AWestinghouse Electric Corp. · 1980
- Dynamoelectric machine with ferromagnetic end winding ring50US 6,157,109 AReliance Electric Technologies, LLC · 2000
- End iron axial flux damper system44US 4,152,615 AWestinghouse Electric Corp. · 1979
- Electrical machine stator29US 4,021,691 A1977
- Dynamoelectric machine20US 4,286,183 AWestinghouse Electric Corp. · 1981