H02K 37/20
With rotating flux distributors, the armatures and magnets both being stationary
Official title: with rotating flux distributors, the armatures and magnets both being stationary
H02K37/20 (With rotating flux distributors, the armatures and magnets both being stationary) appears on 59 US grants and 20 published applications in this corpus.
Search patents in H02K- Granted patents
- 59
- Published applications
- 20
- Assignees
- 34
- Inventors
- 71
- Latest grant
- 9 Aug 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 3 |
| 2008 | 2 | 1 |
| 2009 | 2 | 3 |
| 2010 | 1 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 2 |
| 2015 | 2 | 1 |
| 2016 | 2 | 1 |
| 2017 | 0 | 2 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Variable reluctance step motor having enhanced holding torque9 Aug 2022US 11,411,444 B2Lin Engineering, Inc.
- Stator used in resolvers, and resolver including same24 Dec 2019US 10,514,275 B2Ls Automotive Technologies Co., Ltd.
- Electropermanent magnet-based motors20 Dec 2016US 9,525,330 B2Massachusetts Institute of Technology
- Hybrid motor22 Nov 2016US 9,502,952 B2Persimmon Technologies Corporation
- Hybrid step motor15 Dec 2015US 9,214,849 B2Lin Engineering, Inc.
- Variable reluctance step motor having enhanced holding torque20 Jan 2022US 2022/0021250 A1Lin Engineering, Inc.
- Stator used in resolvers, and resolver including same14 Sep 2017US 2017/0261350 A1Daesung Electric Co., Ltd.
- Stator used in resolvers, and resolver including same20 Jul 2017US 2017/0207670 A1Daesung Electric Co., Ltd.
- Electropermanent Magnet-based Motors9 Jun 2016US 2016/0164394 A1Massachusetts Institute of Technology
- Stator used in resolvers, and resolver including same26 Nov 2015US 2015/0338244 A1Daesung Electric Co., Ltd.
Most cited
By later US patents
- Variable reluctance step motor with permanent magnets76US 3,984,711 AWarner Electric Brake & Clutch Company · 1976
- Pulse motor51US 4,306,164 ANippon Telegraph & Telephone Public Corporation · 1981
- Permanent magnet type stepping motor44US 4,563,602 AKabushiki Kaisha Yasawa Denki Seisakusho · 1986
- Magnetically enhanced variable reluctance motor systems44US 4,713,570 APacific Scientific Company · 1987
- Hybrid stepping motor44US 5,834,865 ATamagawa Seiki Kabushiki Kaisha · 1998