H02P 7/298
Controlling armature and field supplies
Official title: controlling armature and field supplies
H02P7/298 (Controlling armature and field supplies) appears on 116 US grants and 34 published applications in this corpus.
Search patents in H02P- Granted patents
- 116
- Published applications
- 34
- Assignees
- 73
- Inventors
- 190
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 8 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 9 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 10 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 6 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 3 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 2 | 1 |
| 2007 | 2 | 1 |
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 1 | 3 |
| 2011 | 2 | 1 |
| 2012 | 3 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 2 |
| 2015 | 1 | 3 |
| 2016 | 1 | 1 |
| 2017 | 3 | 5 |
| 2018 | 1 | 1 |
| 2019 | 2 | 1 |
| 2020 | 3 | 1 |
| 2021 | 1 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 1 |
| 2024 | 1 | 2 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Motor driving device31 Mar 2026US 12,592,691 B2Nuvoton Technology Corporation Japan
- Hybrid system to overhaul a DC locomotive4 Jun 2024US 11,999,241 B2Progress Rail Services Corporation
- Command generation device and command generation method16 May 2023US 11,652,435 B2Nidec Corporation
- Series wound direct-current motor driving device and equipment12 Jul 2022US 11,387,717 B2University of Shanghai for Science and Technology
- Motor control device with built-in current sensing resistor and power transistor22 Jun 2021US 11,043,911 B2ICP Technology Co., Ltd.
- Motor driving device29 Aug 2024US 2024/0291477 A1Nuvoton Technology Corporation Japan
- Rotor flux time delay reduction through permanent magnets for electrically excited synchronous machines22 Feb 2024US 2024/0063735 A1Tula eTechnology, Inc.
- Hybrid system to overhaul a dc locomotive6 Apr 2023US 2023/0106803 A1Progress Rail Services Corporation
- Series Wound Direct-current Motor Driving Device and Equipment20 Jan 2022US 2022/0021281 A1University of Shanghai for Science and Technology
- Command generation device and command generation method25 Nov 2021US 2021/0367547 A1Nidec Corporation
Most cited
By later US patents
- Low current compensation control for thyristor armature power supply107US 5,451,846 AAEG Automation Systems Corporation · 1995
- Electric vehicle current regulating system101US 4,423,362 AGeneral Electric Company · 1983
- Apparatus for controlling an electrical vehicle drive system77US 4,461,988 AGeneral Electric Company · 1984
- Optimal DC motor/controller configuration70US 5,332,954 ASolaria Research Enterprises, Ltd. · 1994
- Container with power assist wheels69US 9,849,901 B22017