H02K 1/26
Rotor cores with slots for windings
H02K1/26 (Rotor cores with slots for windings) appears on 353 US grants and 414 published applications in this corpus.
Search patents in H02K- Granted patents
- 353
- Published applications
- 414
- Assignees
- 224
- Inventors
- 987
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 10 | 0 |
| 1990 | 9 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 3 |
| 2002 | 4 | 3 |
| 2003 | 1 | 2 |
| 2004 | 6 | 3 |
| 2005 | 1 | 1 |
| 2006 | 1 | 6 |
| 2007 | 2 | 8 |
| 2008 | 3 | 7 |
| 2009 | 2 | 4 |
| 2010 | 8 | 10 |
| 2011 | 5 | 4 |
| 2012 | 6 | 5 |
| 2013 | 5 | 11 |
| 2014 | 4 | 17 |
| 2015 | 6 | 14 |
| 2016 | 11 | 16 |
| 2017 | 12 | 29 |
| 2018 | 13 | 37 |
| 2019 | 32 | 40 |
| 2020 | 34 | 25 |
| 2021 | 37 | 30 |
| 2022 | 29 | 29 |
| 2023 | 18 | 27 |
| 2024 | 17 | 25 |
| 2025 | 23 | 28 |
| 2026 | 14 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rotor for an electric machine29 Sep 2026US 12,749,940 B2Voith Patent GmbH
- Rotor for an externally excited synchronous machine29 Sep 2026US 12,749,951 B2Mahle International GmbH
- Method and apparatus for cooling a rotor assembly22 Sep 2026US 12,744,427 B2GE Aviation Systems LLC
- Rotary electric machine11 Aug 2026US 12,706,498 B2Aisin Corporation
- Wound rotor with winding flanges and shaft with radial and axial fluid channels11 Aug 2026US 12,706,499 B2Novares France
- Triple Stator Homopolar Alternator8 Oct 2026US 2026/0312453 A1C. E. Niehoff & Co.
- End-Face Stator Lamination for a Stator Body of a Stator of an Electric Machine1 Oct 2026US 2026/0302849 A1Bayerische Motoren Werke Aktiengesellschaft
- Current transmission device for externally excited synchronous machines having segmented ferrite cores24 Sep 2026US 2026/0291300 A1ZF Friedrichshafen AG
- Rotor for an asynchronous electric machine24 Sep 2026US 2026/0291305 A1MAGNA Powertrain AG & Co KG
- Rotor assembly and method of cooling24 Sep 2026US 2026/0291315 A1GE Aviation Systems LLC
Most cited
By later US patents
- Armature core77US 5,338,996 AMitsubishi Denki Kabushiki Kaisha · 1994
- Displacement devices and methods for fabrication, use and control of same73US 9,202,719 B2The University of British Columbia · 2015
- Electric motor with optimum core dimensions63US 5,045,742 AGeneral Electric Company · 1991
- Apparatus for aligning stacked laminations of a dynamoelectric machine62US 5,142,178 AEmerson Electric Co. · 1992
- Strip wound dynamoelectric machine core54US 4,365,180 AGeneral Motors Corporation · 1982