H02P 7/282
Controlling field supply only
Official title: controlling field supply only
H02P7/282 (Controlling field supply only) appears on 36 US grants and 13 published applications in this corpus.
Search patents in H02P- Granted patents
- 36
- Published applications
- 13
- Assignees
- 26
- Inventors
- 56
- Latest grant
- 10 Nov 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 3 |
| 2007 | 1 | 2 |
| 2008 | 1 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 2 |
| 2014 | 0 | 0 |
| 2015 | 2 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 3 |
| 2020 | 2 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Methods for controlling a voltage present at an electric fan10 Nov 2020US 10,833,615 B2Siemens Aktiengesellschaft
- Closed control device for DC brush motor, control system, and control method8 Sep 2020US 10,770,995 B2Kabushiki Kaisha Toshiba
- Motor driving device9 Jul 2019US 10,348,237 B2Hitachi Automotive Systems, Ltd.
- Cross-interlocked switch type DC electric machine having auxiliary excitation winding and conduction ring and brush10 Jan 2017US 9,543,797 B2
- Field winding rotating electrical machine and method for controlling field current of a field winding rotating electrical machine22 Mar 2016US 9,294,025 B2Mitsubishi Electric Corporation
- Closed control device for dc brush motor, control system, and control method19 Sep 2019US 2019/0288622 A1Kabushiki Kaisha Toshiba
- Methods for controlling a voltage present at an electric fan30 May 2019US 2019/0165707 A1Siemens Aktiengesellschaft
- Motor Driving Device14 Feb 2019US 2019/0052218 A1Hitachi Automotive Systems, Ltd.
- Field winding rotating electrical machine and method for controlling field current of a field winding rotating electrical machine19 Feb 2015US 2015/0048773 A1Mitsubishi Electric Corporation
- Cross-Interlocked Switch Type DC Electric Machine Having Auxiliary Excitation Winding And Conduction Ring And Brush12 Dec 2013US 2013/0328456 A1
Most cited
By later US patents
- Control system and method for operating a DC motor43US 4,240,015 AExxon Research & Engineering Co. · 1980
- Pulsed power supply23US 3,947,738 AReliance Electric Company · 1976
- Safety features for electric vehicle control23US 4,090,114 AWestinghouse Electric Corp. · 1978
- Feedback field control for an electric vehicle15US 3,989,990 AWestinghouse Electric Corp. · 1976
- Electric vehicle speed control12US 4,675,585 AOutboard Marine Corporation · 1987