H02K 23/40
Dc commutator motors or generators having mechanical commutator: characterised by the arrangement
Official title: characterised by the arrangement of the magnet circuits
H02K23/40 (Dc commutator motors or generators having mechanical commutator: characterised by the arrangement) appears on 122 US grants and 86 published applications in this corpus.
Search patents in H02K- Granted patents
- 122
- Published applications
- 86
- Assignees
- 67
- Inventors
- 248
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 1 |
| 2002 | 1 | 3 |
| 2003 | 2 | 0 |
| 2004 | 1 | 4 |
| 2005 | 4 | 3 |
| 2006 | 2 | 4 |
| 2007 | 0 | 3 |
| 2008 | 1 | 3 |
| 2009 | 1 | 3 |
| 2010 | 3 | 7 |
| 2011 | 0 | 9 |
| 2012 | 2 | 5 |
| 2013 | 5 | 1 |
| 2014 | 4 | 2 |
| 2015 | 5 | 2 |
| 2016 | 3 | 6 |
| 2017 | 3 | 7 |
| 2018 | 3 | 7 |
| 2019 | 6 | 5 |
| 2020 | 5 | 2 |
| 2021 | 5 | 2 |
| 2022 | 2 | 4 |
| 2023 | 0 | 2 |
| 2024 | 2 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Direct-current electric motor and use thereof as a drive of a liftgate21 Oct 2025US 12,451,783 B2Stabilus GmbH
- Power tool including universal motor having interpoles6 Feb 2024US 11,894,754 B2Milwaukee Electric Tool Corporation
- Brush motor30 Jan 2024US 11,888,360 B2Mabuchi Motor Co., Ltd.
- Electric motor4 Oct 2022US 11,462,981 B2
- Brushed electric motor/generator12 Jul 2022US 11,387,692 B2Linear Labs, Inc.
- Direct-current electric motor and use thereof as a drive of a liftgate11 Jan 2024US 2024/0014723 A1Stabilus GmbH
- Electric motor, drive assembly and electromechanical brake device18 May 2023US 2023/0155468 A1ZF Active Safety GmbH
- Brushed electric motor/generator5 Jan 2023US 2023/0006484 A1Linear Labs, Inc.
- Electric motor8 Dec 2022US 2022/0393560 A1
- Brush motor3 Nov 2022US 2022/0352791 A1Mabuchi Motor Co., Ltd.
Most cited
By later US patents
- Compound interaction/induction electric rotating machine107US 4,441,043 A1984
- Lightweight high power electromotive device107US 4,900,965 AFisher Technology, Inc. · 1990
- Permanent magnet brushless DC motor having reduced cogging92US 5,250,867 AGeneral Electric Company · 1993
- Modular electromagnetic device with reversible generator-motor operation69US 8,354,768 B2Avio S.P. A. · 2013
- Electric motor with optimum core dimensions63US 5,045,742 AGeneral Electric Company · 1991