H02K 17/24
In which both stator and rotor are fed with ac
Official title: in which both stator and rotor are fed with AC
H02K17/24 (In which both stator and rotor are fed with ac) appears on 14 US grants and 14 published applications in this corpus.
Search patents in H02K- Granted patents
- 14
- Published applications
- 14
- Assignees
- 12
- Inventors
- 39
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 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 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 1 | 2 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 2 |
| 2021 | 1 | 0 |
| 2022 | 0 | 4 |
| 2023 | 1 | 1 |
| 2024 | 2 | 2 |
| 2025 | 3 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Wound-rotor electric machine2 Sep 2025US 12,407,226 B2GM Global Technology Operations LLC
- Dynamoelectric machine having cooling of the slip ring system4 Mar 2025US 12,244,189 B2Flender GmbH
- Electromagnetic machine using magnetic field binding of multiple multi-phase winding wires25 Feb 2025US 12,237,737 B2
- AC machine controlled via amplitude modulation3 Sep 2024US 12,081,160 B2
- Electric drive unit including a first rotor, a second rotor, and a stator for individual torque control of vehicle wheels26 Mar 2024US 11,942,832 B2Dana Belgium N.V.
- Dynamoelectric machine having cooling of the slip ring system16 May 2024US 2024/0162794 A1Flender GmbH
- Wound-rotor electric machine18 Jan 2024US 2024/0022141 A1GM Global Technology Operations LLC
- Electromagnetic machine using magnetic field binding of multiple multi-phase winding wires30 Nov 2023US 2023/0387769 A1
- Ac machine controlled via amplitude modulation15 Dec 2022US 2022/0399839 A1
- Shaft for a slip-ring rotor13 Oct 2022US 2022/0329136 A1Flender GmbH
Most cited
By later US patents
- Variable speed induction motor29US 4,019,104 A1977
- Hybrid-secondary uncluttered induction machine13US 6,310,417 B1Lockheed Martin Energy Research Corporation · 2001
- Electronically controlled universal motor10US 9,130,433 B2Arm Limited · 2015
- Power transmission device2US 8,914,179 B2Aisin Seiki Kabushiki Kaisha · 2014
- Maintaining double feed induction generator wye ring1US 10,476,356 B2GE Energy Power Conversion Technology Limited · 2019