H02K 23/08
Having series connection of excitation windings
Official title: having series connection of excitation windings
H02K23/08 (Having series connection of excitation windings) appears on 19 US grants and 19 published applications in this corpus.
Search patents in H02K- Granted patents
- 19
- Published applications
- 19
- Assignees
- 13
- Inventors
- 51
- Latest grant
- 12 Jul 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 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 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 0 | 1 |
| 2004 | 2 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 2 | 1 |
| 2014 | 1 | 2 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 2 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 2 |
| 2020 | 2 | 0 |
| 2021 | 2 | 2 |
| 2022 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Series wound direct-current motor driving device and equipment12 Jul 2022US 11,387,717 B2University of Shanghai for Science and Technology
- Direct current motor7 Jun 2022US 11,355,973 B2University of Shanghai for Science and Technology
- Direct current motor28 Dec 2021US 11,211,855 B2University of Shanghai for Science and Technology
- Power tool8 Jun 2021US 11,027,405 B2Positec Power Tools (Suzhou) Co., Ltd.
- Power tool15 Dec 2020US 10,868,462 B2Positec Power Tools (Suzhou) Co., Ltd.
- Series Wound Direct-current Motor Driving Device and Equipment20 Jan 2022US 2022/0021281 A1University of Shanghai for Science and Technology
- Direct current motor5 Aug 2021US 2021/0242762 A1University of Shanghai for Science and Technology
- Direct current motor8 Jul 2021US 2021/0210997 A1University of Shanghai for Science and Technology
- Electric drive apparatus, chopper, dc motor, and electric device17 Oct 2019US 2019/0319523 A1University of Shanghai for Science and Technology
- Power Tool4 Apr 2019US 2019/0099873 A1Positec Power Tools (Suzhou) Co., Ltd.
Most cited
By later US patents
- Angle grinder61US 7,537,065 B2Black & Decker Inc. · 2009
- Series electric motor with permanent magnet brake26US 5,087,845 AFesto AG & Co. · 1992
- Series motor, in particular universal motor with brake device14US 5,552,686 ARobert Bosch GmbH · 1996
- Power tool7US 11,027,405 B2Positec Power Tools (Suzhou) Co., Ltd. · 2021
- Hybrid field permanent magnet motor7US 4,079,278 ATorque Systems, Inc. · 1978