H02P 7/2913
Whereby the speed is regulated by measuring the motor speed and comparing
Official title: {whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value}
H02P7/2913 (Whereby the speed is regulated by measuring the motor speed and comparing) appears on 156 US grants and 85 published applications in this corpus.
Search patents in H02P- Granted patents
- 156
- Published applications
- 85
- Assignees
- 125
- Inventors
- 293
- Latest grant
- 1 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 5 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 7 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 1 |
| 2003 | 2 | 5 |
| 2004 | 2 | 1 |
| 2005 | 3 | 1 |
| 2006 | 1 | 3 |
| 2007 | 1 | 6 |
| 2008 | 5 | 4 |
| 2009 | 3 | 5 |
| 2010 | 3 | 3 |
| 2011 | 2 | 1 |
| 2012 | 2 | 3 |
| 2013 | 4 | 5 |
| 2014 | 5 | 7 |
| 2015 | 6 | 2 |
| 2016 | 3 | 5 |
| 2017 | 3 | 2 |
| 2018 | 3 | 8 |
| 2019 | 7 | 5 |
| 2020 | 2 | 6 |
| 2021 | 7 | 4 |
| 2022 | 5 | 4 |
| 2023 | 4 | 0 |
| 2024 | 2 | 0 |
| 2025 | 1 | 3 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and system for controlling fan, and electronic device employing method1 Apr 2025US 12,267,036 B2Champ Tech Optical (Foshan) Corporation
- System and method for compact motor control with redundant power structures25 Jun 2024US 12,021,444 B2Eaton Intelligent Power Limited
- Servo motor drive circuit and 3D printing apparatus9 Apr 2024US 11,951,685 B2Zhuhai Sailner 3D Technology Co., Ltd.
- Motor controller with power feedback loop14 Nov 2023US 11,817,811 B2Allegro MicroSystems, LLC
- PWM generation circuit, processing circuit and chip17 Oct 2023US 11,791,813 B2Amicro Semiconductor Co., Ltd.
- Control device7 Aug 2025US 2025/0253785 A1Aisin Corporation
- Method and system for controlling fan, and electronic device employing method23 Jan 2025US 2025/0030359 A1Champ Tech Optical (Foshan) Corporation
- Motor control device2 Jan 2025US 2025/0007430 A1STMicroelectronics International N. V.
- PWM generation circuit, processing circuit and chip3 Mar 2022US 2022/0069814 A1Amicro Semiconductor Co., Ltd.
- Servo motor drive circuit and 3d printing apparatus17 Feb 2022US 2022/0048248 A1Zhuhai Sailner 3D Technology Co., Ltd.
Most cited
By later US patents
- Method for regulating the power supply to a direct-current motor and a device for the application of said method861US 4,468,597 AFaiveley S.A. · 1984
- Motor control system218US 4,041,362 ACanon Kabushiki Kaisha · 1977
- Motor control circuit for regulating a D.C. motor81US 6,025,683 AStryker Corporation · 2000
- DC motor speed control system76US 5,388,176 ABriggs & Stratton Corporation · 1995
- Electric motor controller59US 4,622,500 AThe Machlett Laboratories, Inc. · 1986