H02K 3/521
Applicable to stators only
Official title: {applicable to stators only}
H02K3/521 (Applicable to stators only) appears on 2,435 US grants and 2,959 published applications in this corpus.
Search patents in H02K- Granted patents
- 2,435
- Published applications
- 2,959
- Assignees
- 718
- Inventors
- 5,068
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 7 | 0 |
| 1978 | 7 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 9 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 10 | 0 |
| 1991 | 13 | 0 |
| 1992 | 4 | 0 |
| 1993 | 19 | 0 |
| 1994 | 12 | 0 |
| 1995 | 8 | 0 |
| 1996 | 13 | 0 |
| 1997 | 12 | 0 |
| 1998 | 12 | 0 |
| 1999 | 20 | 0 |
| 2000 | 25 | 0 |
| 2001 | 15 | 9 |
| 2002 | 21 | 46 |
| 2003 | 27 | 40 |
| 2004 | 42 | 62 |
| 2005 | 45 | 60 |
| 2006 | 51 | 63 |
| 2007 | 43 | 61 |
| 2008 | 33 | 71 |
| 2009 | 46 | 77 |
| 2010 | 67 | 91 |
| 2011 | 61 | 71 |
| 2012 | 49 | 78 |
| 2013 | 77 | 129 |
| 2014 | 80 | 116 |
| 2015 | 64 | 136 |
| 2016 | 86 | 121 |
| 2017 | 109 | 138 |
| 2018 | 111 | 146 |
| 2019 | 141 | 163 |
| 2020 | 148 | 211 |
| 2021 | 144 | 185 |
| 2022 | 167 | 242 |
| 2023 | 128 | 185 |
| 2024 | 196 | 204 |
| 2025 | 173 | 164 |
| 2026 | 100 | 90 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Coil assembly of an integrated motor pump or turbine having reduced thermal stress at cryogenic temperatures6 Oct 2026US 12,756,257 B2Flowserve Pte. Ltd.
- Electric motor of a motor vehicle6 Oct 2026US 12,756,275 B2Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg
- Brushless motor29 Sep 2026US 12,749,941 B2Dyson Technology Limited
- Electrical insulator with projections in inner walls around stator core teeth for motor15 Sep 2026US 12,738,778 B2Aichi Electric Co., Ltd.
- Motor and control device15 Sep 2026US 12,738,801 B2LG Innotek Co., Ltd.
- Clamping device for a stator8 Oct 2026US 2026/0312455 A1Hilti Aktiengesellschaft
- Stator24 Sep 2026US 2026/0291299 A1Denso Corporation
- Electric motor, in particular radiator fan motor10 Sep 2026US 2026/0269673 A1
- Motor10 Sep 2026US 2026/0269674 A1Mando-Brose Corporation
- Electric oil pump10 Sep 2026US 2026/0269695 A1Nidec Powertrain Systems Corporation
Most cited
By later US patents
- Blower with bearing tube333US 8,636,479 B2ResMed Motor Technologies Inc. · 2014
- Motor mounted in a vehicle94US 6,011,339 AShibaura Engineering Works Co., Ltd. · 2000
- Rotary motor and production method thereof, and laminated core and production method thereof91US 5,859,486 AMitsubishi Denki Kabushiki Kaisha · 1999
- Power tools with switched reluctance motor90US 7,064,462 B2Milwaukee Electric Tool Corporation · 2006
- Field assembly for electric motors87US 3,979,615 AAMP Incorporated · 1976