H02P 9/123
For demagnetising
Official title: {for demagnetising; for reducing effects of remanence}
H02P9/123 (For demagnetising) appears on 10 US grants and 9 published applications in this corpus.
Search patents in H02P- Granted patents
- 10
- Published applications
- 9
- Assignees
- 10
- Inventors
- 26
- Latest grant
- 24 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 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 | 2 |
| 2013 | 0 | 1 |
| 2014 | 2 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 2 |
| 2020 | 0 | 0 |
| 2021 | 2 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 2 |
| 2024 | 0 | 0 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Control apparatus for rotating electric machine24 Jun 2025US 12,341,452 B2Denso Corporation
- De-exciting system for inductive circuits13 May 2025US 12,301,158 B2ABB Schweiz AG
- Regenerative current limiting of synchronous motor drives31 May 2022US 11,349,430 B2Steering Solutions IP Holding Corporation
- Control method and switching device17 Aug 2021US 11,095,211 B2Bayerische Motoren Werke Aktiengesellschaft
- Permanent magnet synchronous motor18 May 2021US 11,011,965 B2Nissan Motor Co., Ltd.
- De-Exciting System for Inductive Circuits16 Nov 2023US 2023/0370003 A1ABB Schweiz AG
- Control apparatus for rotating electric machine9 Nov 2023US 2023/0361705 A1Denso Corporation
- Regenerative current limiting of synchronous motor drives15 Apr 2021US 2021/0111661 A1Steering Solutions IP Holding Corporation
- Control Method and Switching Device15 Aug 2019US 2019/0252973 A1Bayerische Motoren Werke Aktiengesellschaft
- Use of a control system of a polyphase rotary electric machine comprising phase short-circuit means, and use of the corresponding rotary electric machine7 Feb 2019US 2019/0044465 A1Valeo Equipements Electriques Moteur
Most cited
By later US patents
- Fast de-excitation brushless exciter22US 4,152,636 AWestinghouse Electric Corp. · 1979
- Brushless exciter supplemental ceiling excitation system13US 4,032,835 AWestinghouse Electric Corp. · 1977
- Synchronous machine with switching element in the excitation circuit5US 8,963,476 B2BRUSA Elektronik AG · 2015
- Rotating electrical-machine control system and method of operating magnet temperature of rotating electrical-machine4US 8,653,779 B2Toyota Jidosha Kabushiki Kaisha · 2014
- Control method and switching device2US 11,095,211 B2Bayerische Motoren Werke Aktiengesellschaft · 2021