H02K 33/12
Motors with reciprocating, oscillating or vibrating magnet, armature or coil system: with
Official title: with armatures moving in alternate directions by alternate energisation of two coil systems
H02K33/12 (Motors with reciprocating, oscillating or vibrating magnet, armature or coil system: with) appears on 285 US grants and 254 published applications in this corpus.
Search patents in H02K- Granted patents
- 285
- Published applications
- 254
- Assignees
- 168
- Inventors
- 548
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 5 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 7 | 0 |
| 2001 | 3 | 2 |
| 2002 | 4 | 5 |
| 2003 | 4 | 3 |
| 2004 | 4 | 5 |
| 2005 | 4 | 5 |
| 2006 | 2 | 4 |
| 2007 | 5 | 1 |
| 2008 | 1 | 2 |
| 2009 | 1 | 4 |
| 2010 | 2 | 3 |
| 2011 | 2 | 6 |
| 2012 | 2 | 2 |
| 2013 | 2 | 8 |
| 2014 | 3 | 9 |
| 2015 | 2 | 10 |
| 2016 | 6 | 18 |
| 2017 | 11 | 12 |
| 2018 | 18 | 23 |
| 2019 | 15 | 30 |
| 2020 | 26 | 37 |
| 2021 | 26 | 15 |
| 2022 | 15 | 12 |
| 2023 | 13 | 15 |
| 2024 | 17 | 10 |
| 2025 | 12 | 6 |
| 2026 | 8 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Linear rotary motor8 Sep 2026US 12,732,079 B2Mitsubishi Electric Corporation
- Multi-directional vibration motor with peripheral magnetic ring made from magnets surrounding coil unit14 Jul 2026US 12,683,474 B2AAG Technologies (Nanjing) Co., Ltd.
- Reflector driving device21 Apr 2026US 12,610,117 B2Alps Alpine Co., Ltd.
- Button mechanism7 Apr 2026US 12,597,839 B2Quanta Computer Inc.
- Vibration generation device, vibration reduction device, and electronic apparatus17 Feb 2026US 12,554,183 B2Seiko Epson Corporation
- Key motor system1 Oct 2026US 2026/0302907 A1AAC Microtech (Changzhou) Co., Ltd.
- Camera actuator and camera module including same27 Aug 2026US 2026/0251961 A1LG Innotek Co., Ltd.
- Operation input device6 Aug 2026US 2026/0229427 A1MINEBEA MITSUMI Inc.
- Vibration actuator and vibration presentation apparatus2 Jul 2026US 2026/0189116 A1MINEBEA MITSUMI Inc.
- Linear vibration motor and method for manufacturing linear vibration motor21 May 2026US 2026/0142543 A1Murata Manufacturing Co., Ltd.
Most cited
By later US patents
- Apparatus for automatically controlling transmission of light through a lens system141US 4,264,154 APolaroid Corporation · 1981
- Reaction force generating apparatus108US 5,656,901 AKokusai Dengyo Co., Ltd. · 1997
- Methods for controlling the path of magnetic flux from a permanent magnet and devices incorporating the same68US 6,342,746 B12002
- Linear electric motor for downhole use64US 4,687,054 A1987
- Methods for controlling the path of magnetic flux from a permanent magnet and devices incorporating the same63US 6,246,561 B1Magnetic Revolutions, Inc. · 2001