H02K 33/04
Wherein the frequency of operation is determined by the frequency of uninterrupted
Official title: wherein the frequency of operation is determined by the frequency of uninterrupted AC energisation
H02K33/04 (Wherein the frequency of operation is determined by the frequency of uninterrupted) appears on 237 US grants and 178 published applications in this corpus.
Search patents in H02K- Granted patents
- 237
- Published applications
- 178
- Assignees
- 127
- Inventors
- 409
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 2 |
| 2002 | 1 | 3 |
| 2003 | 6 | 4 |
| 2004 | 1 | 3 |
| 2005 | 6 | 6 |
| 2006 | 3 | 8 |
| 2007 | 3 | 10 |
| 2008 | 6 | 2 |
| 2009 | 6 | 2 |
| 2010 | 2 | 5 |
| 2011 | 2 | 8 |
| 2012 | 3 | 5 |
| 2013 | 8 | 3 |
| 2014 | 4 | 5 |
| 2015 | 4 | 5 |
| 2016 | 5 | 7 |
| 2017 | 6 | 5 |
| 2018 | 8 | 18 |
| 2019 | 7 | 13 |
| 2020 | 17 | 23 |
| 2021 | 8 | 2 |
| 2022 | 16 | 14 |
| 2023 | 12 | 10 |
| 2024 | 13 | 9 |
| 2025 | 6 | 4 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Vibrating motor with elastic piece with arms and fixing portion fixed to mass block19 May 2026US 12,633,812 B2AAC Microtech (Changzhou) Co., Ltd.
- Vibration actuator with movable body and fixing body having magnetic cylindrical body outside coil with length31 Mar 2026US 12,592,624 B2MINEBEA MITSUMI Inc.
- Vibration exciter17 Feb 2026US 12,556,078 B2AAC Microtech (Changzhou) Co., Ltd.
- Vibration exciter9 Sep 2025US 12,413,126 B2AAC Microtech (Changzhou) Co., Ltd.
- Tactile feedback mechanism2 Sep 2025US 12,407,910 B2TDK Taiwan Corp.
- Hair trimming device and linear vibration motor6 Aug 2026US 2026/0225270 A1
- Vibration actuator and electronic equipment9 Jul 2026US 2026/0196909 A1MINEBEA MITSUMI Inc.
- Refrigerator for superconducting motor and superconducting motor16 Oct 2025US 2025/0323562 A1Lihan Cryogenics Co., Ltd., Shenzhen (Cn)
- Vibratory motor with stroke control14 Aug 2025US 2025/0260300 A1Wahl Clipper Corporation
- Vibration actuator and vibration presenting apparatus24 Jul 2025US 2025/0239928 A1MINEBEA MITSUMI Inc.
Most cited
By later US patents
- Linear motor and linear compressor using the same1,020US 7,489,055 B2LG Electronics Inc. · 2009
- Moving magnet-type actuator229US 5,434,549 ATDK Corporation · 1995
- Electro-optical scanning system with gyrating scan head151US 5,371,347 AGAP Technologies, Inc. · 1994
- Light beam scanning pen, scan module for the device and method of utilization133US 5,932,860 AGEO Labs, Inc. · 1999
- Actuator for active vibration control121US 5,231,336 AHarman International Industries, Incorporated · 1993