H02P 3/24
By applying dc to the motor
Official title: by applying DC to the motor
H02P3/24 (By applying dc to the motor) appears on 108 US grants and 69 published applications in this corpus.
Search patents in H02P- Granted patents
- 108
- Published applications
- 69
- Assignees
- 77
- Inventors
- 187
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 4 |
| 2004 | 0 | 1 |
| 2005 | 2 | 0 |
| 2006 | 3 | 1 |
| 2007 | 2 | 4 |
| 2008 | 3 | 2 |
| 2009 | 3 | 4 |
| 2010 | 1 | 3 |
| 2011 | 2 | 2 |
| 2012 | 2 | 5 |
| 2013 | 4 | 3 |
| 2014 | 4 | 2 |
| 2015 | 1 | 2 |
| 2016 | 3 | 1 |
| 2017 | 0 | 4 |
| 2018 | 0 | 6 |
| 2019 | 8 | 9 |
| 2020 | 5 | 6 |
| 2021 | 9 | 5 |
| 2022 | 5 | 1 |
| 2023 | 2 | 1 |
| 2024 | 2 | 3 |
| 2025 | 2 | 0 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and apparatus for monitoring the condition of a power semiconductor module7 Jul 2026US 12,674,833 B2ABB Schweiz AG
- Electric boiler device based on utilization of residual energy of elevator, and control method19 May 2026US 12,631,346 B2Zhejiang University of Technology
- Motor assembly for slowing down falling speed of stage light fixture on power failure, and stage light fixture20 May 2025US 12,308,778 B2Guangzhou Haoyang Electronic Co., Ltd.
- Valve actuator with dc braking system15 Apr 2025US 12,278,585 B2Tri-Tec Manufacturing, LLC
- Elevator24 Sep 2024US 12,098,056 B2Kone Corporation
- Electric boiler device based on utilization of residual energy of elevator, and control method3 Oct 2024US 2024/0328636 A1Zhejiang University of Technology
- Motor assembly for slowing down falling speed of stage light fixture on power failure, and stage light fixture4 Apr 2024US 2024/0113640 A1Guangzhou Haoyang Electronic Co., Ltd.
- Method And Apparatus For Monitoring The Condition Of A Power Semiconductor Module14 Mar 2024US 2024/0088782 A1ABB Schweiz AG
- Valve actuator with dc braking system4 May 2023US 2023/0139060 A1Tri-Tec Manufacturing, LLC
- Electric Motor/Generator with Integrated Differential20 Jan 2022US 2022/0021272 A1Axiflux Holdings Pty Ltd.
Most cited
By later US patents
- Electric motor brake59US 4,857,818 A1989
- Marine propulsion system36US 4,338,525 AWestinghouse Electric Corp. · 1982
- Composite control for soft start and dynamic braking of a three-phase induction motor36US 4,482,853 AReuland Electric Company · 1984
- Squirrel cage induction motors29US 4,393,344 A1983
- Nut runner using induction motor29US 4,554,980 ADaiichi Dentsu Kabushiki Kaisha · 1985