H02K 1/246
Variable reluctance rotors
Official title: {Variable reluctance rotors}
H02K1/246 (Variable reluctance rotors) appears on 558 US grants and 640 published applications in this corpus.
Search patents in H02K- Granted patents
- 558
- Published applications
- 640
- Assignees
- 278
- Inventors
- 1,209
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 5 | 0 |
| 1999 | 7 | 0 |
| 2000 | 5 | 0 |
| 2001 | 8 | 2 |
| 2002 | 5 | 10 |
| 2003 | 5 | 10 |
| 2004 | 9 | 9 |
| 2005 | 8 | 7 |
| 2006 | 8 | 11 |
| 2007 | 11 | 14 |
| 2008 | 7 | 10 |
| 2009 | 9 | 18 |
| 2010 | 12 | 19 |
| 2011 | 18 | 12 |
| 2012 | 13 | 18 |
| 2013 | 7 | 16 |
| 2014 | 16 | 25 |
| 2015 | 7 | 40 |
| 2016 | 13 | 41 |
| 2017 | 28 | 48 |
| 2018 | 40 | 53 |
| 2019 | 47 | 66 |
| 2020 | 69 | 34 |
| 2021 | 37 | 35 |
| 2022 | 35 | 38 |
| 2023 | 27 | 27 |
| 2024 | 33 | 38 |
| 2025 | 28 | 20 |
| 2026 | 14 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Motor rotor, self-starting synchronous reluctance motor comprising same, and compressor6 Oct 2026US 12,756,283 B2Gree Electric Appliances, Inc. of Zhuhai
- Switched reluctance electric machine1 Sep 2026US 12,726,067 B2Hamilton Sundstrand Corporation
- Bearingless split teeth flux reversal motor23 Jun 2026US 12,665,478 B2Massachusetts Institute of Technology
- Four-pole synchronous reluctance motor9 Jun 2026US 12,651,936 B2Siemens Aktiengesellschaft
- Magnetic geared rotating machine, power generation system, and drive system9 Jun 2026US 12,651,951 B2Magnomatics Limited
- Synchronous electric machine with fixed clawed inductor17 Sep 2026US 2026/0280362 A1
- Permanent magnet assisted synchronous reluctance motor17 Sep 2026US 2026/0280395 A1Gree Electric Appliances, Inc. of Zhuhai
- Rotor structure and motor17 Sep 2026US 2026/0280396 A1Gree Electric Appliances, Inc. of Zhuhai
- Electromechanical actuator comprising a compact and low-noise synchronous reluctance motor27 Aug 2026US 2026/0254297 A1Somfy Activites SA
- Motor27 Aug 2026US 2026/0254299 A1Denso Corporation
Most cited
By later US patents
- Permanent magnet reluctance motor with embedded permanent magnet holes115US 6,794,784 B2Kabushiki Kaisha Toshiba · 2004
- Fan unit for an internal combustion engine of automobile vehicle84US 4,459,087 AAciers et Outillage Peugeot · 1984
- Permanent magnet rotating electric machine and electrically driven vehicle employing same75US 6,034,460 AHitachi Car Engineering Co., Ltd. · 2000
- Composite rotor lamination for use in reluctance hompolar, and permanent magnet machines68US 4,916,346 AGeneral Electric Company · 1990
- Electrodynamic system comprising a variable reluctance machine57US 3,956,678 A1976