H02K 13/14
Circuit arrangements for improvement of commutation
Official title: Circuit arrangements for improvement of commutation, e.g. by use of unidirectionally conductive elements
H02K13/14 (Circuit arrangements for improvement of commutation) appears on 26 US grants and 16 published applications in this corpus.
Search patents in H02K- Granted patents
- 26
- Published applications
- 16
- Assignees
- 17
- Inventors
- 64
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 3 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 2 | 0 |
| 2021 | 2 | 5 |
| 2022 | 4 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
| 2025 | 1 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for controlling current distribution to electrical brushes used in dynamoelectric machine10 Mar 2026US 12,573,923 B2GE Infrastructure Technology LLC
- System and method for selective activation and deactivation of electrical brushes used in a dynamoelectric machine for current density optimization16 Sep 2025US 12,418,224 B2GE Infrastructure Technology LLC
- Single substrate resolver/rectifier for brushless wound field synchronous machines21 May 2024US 11,990,801 B2Wisconsin Alumni Research Foundation
- Electrolytic capacitive coupler for transmitting electrical power between moving mechanical elements29 Nov 2022US 11,515,727 B2Wisconsin Alumni Research Foundation
- Rotor assembly for DC motor30 Aug 2022US 11,431,234 B2Johnson Electric International AG
- System and method for selective activation and deactivation of electrical brushes used in a dynamoelectric machine for current density optimization1 May 2025US 2025/0141322 A1GE Infrastructure Technology LLC
- System and method for controlling current distribution to electrical brushes used in dynamoelectric machine1 May 2025US 2025/0141323 A1GE Infrastructure Technology LLC
- Single Substrate Resolver/Rectifier for Brushless Wound Field Synchronous Machines19 May 2022US 2022/0158529 A1Wisconsin Alumni Research Foundation
- Assembly for electrically exciting the rotor of an electrical machine, and method for operation25 Nov 2021US 2021/0367487 A1Voith Patent GmbH
- Electrolytic Capacitive Coupler14 Oct 2021US 2021/0320525 A1Wisconsin Alumni Research Foundation
Most cited
By later US patents
- Direct current motor16US 4,404,485 A1983
- Direct current motors with improved commutation14US 3,959,705 A1976
- Soft-commutated direct current motor11US 5,929,579 ALockheed Martin Energy Research Corporation · 1999
- Multiple windings electrical machines7US 4,305,027 A1981
- Direct-current micromotor6US 4,136,294 APortescap · 1979