H02K 41/035
Dc motors
Official title: DC motors; Unipolar motors
H02K41/035 (Dc motors) appears on 1,881 US grants and 1,853 published applications in this corpus.
Search patents in H02K- Granted patents
- 1,881
- Published applications
- 1,853
- Assignees
- 557
- Inventors
- 2,616
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 5 | 0 |
| 1980 | 2 | 0 |
| 1981 | 6 | 0 |
| 1982 | 8 | 0 |
| 1983 | 5 | 0 |
| 1984 | 9 | 0 |
| 1985 | 12 | 0 |
| 1986 | 15 | 0 |
| 1987 | 18 | 0 |
| 1988 | 17 | 0 |
| 1989 | 18 | 0 |
| 1990 | 6 | 0 |
| 1991 | 11 | 0 |
| 1992 | 21 | 0 |
| 1993 | 12 | 0 |
| 1994 | 21 | 0 |
| 1995 | 8 | 0 |
| 1996 | 15 | 0 |
| 1997 | 17 | 0 |
| 1998 | 36 | 0 |
| 1999 | 25 | 0 |
| 2000 | 21 | 0 |
| 2001 | 20 | 11 |
| 2002 | 11 | 17 |
| 2003 | 16 | 17 |
| 2004 | 22 | 24 |
| 2005 | 17 | 28 |
| 2006 | 21 | 23 |
| 2007 | 11 | 22 |
| 2008 | 14 | 33 |
| 2009 | 17 | 38 |
| 2010 | 44 | 55 |
| 2011 | 45 | 55 |
| 2012 | 44 | 55 |
| 2013 | 46 | 63 |
| 2014 | 42 | 48 |
| 2015 | 35 | 73 |
| 2016 | 58 | 79 |
| 2017 | 69 | 100 |
| 2018 | 90 | 108 |
| 2019 | 88 | 151 |
| 2020 | 115 | 175 |
| 2021 | 130 | 151 |
| 2022 | 150 | 129 |
| 2023 | 141 | 142 |
| 2024 | 135 | 121 |
| 2025 | 115 | 78 |
| 2026 | 68 | 57 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Voice coil motor, zoom lens and photography device29 Sep 2026US 12,749,961 B2Zhongshan Union Optech Research Institute Co., Ltd.
- Preload force optimization for stable ball bearing contact22 Sep 2026US 12,744,434 B1Apple Inc.
- Image stabilizing coil member and camera module comprising same22 Sep 2026US 12,745,005 B2LG Innotek Co., Ltd.
- Ball bearing sensor shift arrangement for camera with fixed magnets22 Sep 2026US 12,745,006 B2Apple Inc.
- Camera module and electronic device having same15 Sep 2026US 12,736,771 B2Samsung Electronics Co., Ltd.
- Lens driving device, camera module, and optical instrument1 Oct 2026US 2026/0299250 A1LG Innotek Co., Ltd.
- Camera actuator and camera module including same1 Oct 2026US 2026/0299373 A1LG Innotek Co., Ltd.
- Lens driving device, camera module, and optical device24 Sep 2026US 2026/0287975 A1LG Innotek Co., Ltd.
- Camera module24 Sep 2026US 2026/0291357 A1Samsung Electro-Mechanics Co., Ltd.
- Actuator, stage apparatus, lithography apparatus and article manufacturing method17 Sep 2026US 2026/0277122 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Hall-effect based linear motor controller1,018US 8,084,969 B2Allegro MicroSystems, LLC · 2011
- Actuator with opposing repulsive magnetic forces146US 6,002,184 ACoactive Drive Corporation · 1999
- Actuator with repulsive magnetic forces144US 6,307,285 B1Coactive Drive Corporation · 2001
- Micromechanical magnetically actuated devices104US 5,644,177 AWisconsin Alumni Research Foundation · 1997
- Magnetic micro-mover103US 5,834,864 AHewlett-Packard Company · 1998