H02K 21/40
With flux distributors rotating around the magnets and within the armatures
Official title: with flux distributors rotating around the magnets and within the armatures
H02K21/40 (With flux distributors rotating around the magnets and within the armatures) appears on 19 US grants and 17 published applications in this corpus.
Search patents in H02K- Granted patents
- 19
- Published applications
- 17
- Assignees
- 15
- Inventors
- 34
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 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 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 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 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 2 |
| 2015 | 2 | 4 |
| 2016 | 1 | 1 |
| 2017 | 1 | 0 |
| 2018 | 1 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 2 |
| 2021 | 2 | 2 |
| 2022 | 0 | 1 |
| 2023 | 2 | 0 |
| 2024 | 0 | 2 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Bearingless split teeth flux reversal motor23 Jun 2026US 12,665,478 B2Massachusetts Institute of Technology
- Permanent magnet-type rotary electric machine30 Sep 2025US 12,431,776 B2Mitsubishi Electric Corporation
- Electromagnetic generator and method of using same18 Jul 2023US 11,705,797 B2Prototus, Ltd.
- Rotating electrical machine and aircraft having said machine24 Jan 2023US 11,563,362 B2Rolls-Royce Deutschland Ltd & Co KG
- Electromagnetic generator and method of using same5 Oct 2021US 11,139,726 B2Prototus, Ltd.
- Bearingless Split Teeth Flux Reversal Motor13 Jun 2024US 2024/0195276 A1Massachusetts Institute of Technology
- Permanent magnet-type rotary electric machine11 Apr 2024US 2024/0120817 A1Mitsubishi Electric Corporation
- Electromagnetic generator and method of using same18 Aug 2022US 2022/0263397 A1Prototus, Ltd.
- Rotating electrical machine and aircraft having said machine11 Feb 2021US 2021/0044188 A1Rolls-Royce Deutschland Ltd & Co KG
- Rotating electric machine7 Jan 2021US 2021/0006142 A1Siemens Aktiengesellschaft
Most cited
By later US patents
- Electro-magnetic coupling system25US 9,190,892 B2ROLLS-ROYCE plc · 2015
- Miniature self-starting electric motor19US 3,936,680 AKabushiki Kaisha Tokai Rika Denki Seisakusho · 1976
- Synchronous micromotor9US 4,052,630 A1977
- Electric generator with two rotors7US 4,612,470 A1986
- Electrical machine with contra-rotating rotors7US 9,184,649 B2ROLLS-ROYCE plc · 2015