H02K 37/16
Having horseshoe armature cores
Official title: having horseshoe armature cores
H02K37/16 (Having horseshoe armature cores) appears on 93 US grants and 42 published applications in this corpus.
Search patents in H02K- Granted patents
- 93
- Published applications
- 42
- Assignees
- 58
- Inventors
- 166
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 7 | 0 |
| 1983 | 8 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 3 | 3 |
| 2004 | 2 | 1 |
| 2005 | 2 | 1 |
| 2006 | 0 | 3 |
| 2007 | 0 | 1 |
| 2008 | 2 | 6 |
| 2009 | 1 | 0 |
| 2010 | 3 | 2 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 2 | 1 |
| 2014 | 0 | 2 |
| 2015 | 2 | 3 |
| 2016 | 0 | 2 |
| 2017 | 3 | 7 |
| 2018 | 0 | 0 |
| 2019 | 6 | 3 |
| 2020 | 1 | 1 |
| 2021 | 5 | 1 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 1 | 2 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Stator with teeth skewed from the rotation axis24 Mar 2026US 12,587,046 B2Mineba Mitsumi Inc.
- Stator, movement, timepiece, method for manufacturing movement and method for manufacturing stator12 Mar 2024US 11,929,640 B2Seiko Instruments Inc.
- Low noise gear motor with dissymetric electric motor29 Aug 2023US 11,742,737 B2Moving Magnet Technologies
- Electric motor23 Nov 2021US 11,183,895 B2Dyson Technology Limited
- Stepping motor9 Nov 2021US 11,171,554 B2Aisan Kogyo Kabushiki Kaisha
- Stepping motor and timepiece12 Mar 2026US 2026/0074597 A1Casio Computer Co., Ltd.
- Stator21 Mar 2024US 2024/0097507 A1MINEBEA MITSUMI Inc.
- Doughnut type electromagnetic motor having c-shaped stator windings29 Feb 2024US 2024/0072581 A1
- Low noise gear motor with dissymetric electric motor11 Aug 2022US 2022/0255413 A1Moving Magnet Technologies
- Stator, movement, timepiece, method for manufacturing movement and method for manufacturing stator25 Mar 2021US 2021/0091607 A1Seiko Instruments Inc.
Most cited
By later US patents
- Bipolar stepping motor rotor with drive pinion and method of manufacture95US 4,700,091 ATimex Corporation · 1987
- Stepping motor with divided stator pole pieces36US 4,794,292 ACanon Kabushiki Kaisha · 1988
- Stepper motor for clockwork in which the stator consists of a soft magnetic alloy and soft magnetic alloy27US 5,838,080 AImphy S. A. · 1998
- Stepping motor for use in a camera with multiple shutters24US 5,117,137 AAsahi Kogaku Kogyo Kabushiki Kaisha · 1992
- Step motor22US 4,103,191 AKabushiki Kaisha Suwa Seikosha · 1978