H02P 25/04
Single phase motors
Official title: Single phase motors, e.g. capacitor motors
H02P25/04 (Single phase motors) appears on 299 US grants and 193 published applications in this corpus.
Search patents in H02P- Granted patents
- 299
- Published applications
- 193
- Assignees
- 158
- Inventors
- 522
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 7 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 8 | 0 |
| 1993 | 5 | 0 |
| 1994 | 10 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 13 | 0 |
| 1998 | 13 | 0 |
| 1999 | 7 | 0 |
| 2000 | 7 | 0 |
| 2001 | 12 | 1 |
| 2002 | 3 | 3 |
| 2003 | 3 | 4 |
| 2004 | 6 | 6 |
| 2005 | 4 | 7 |
| 2006 | 5 | 6 |
| 2007 | 7 | 4 |
| 2008 | 2 | 4 |
| 2009 | 2 | 6 |
| 2010 | 7 | 22 |
| 2011 | 0 | 8 |
| 2012 | 6 | 6 |
| 2013 | 13 | 5 |
| 2014 | 11 | 8 |
| 2015 | 7 | 11 |
| 2016 | 11 | 8 |
| 2017 | 10 | 9 |
| 2018 | 11 | 8 |
| 2019 | 4 | 12 |
| 2020 | 16 | 11 |
| 2021 | 8 | 6 |
| 2022 | 6 | 12 |
| 2023 | 13 | 12 |
| 2024 | 8 | 6 |
| 2025 | 7 | 4 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Motor control device29 Sep 2026US 12,749,996 B2Lutron Technology Company LLC
- Motor rotational speed control system and method having duty cycle variable modulation mechanism5 May 2026US 12,620,921 B2Anpec Electronics Corporation
- Circuit and method for driving SPIM9 Dec 2025US 12,494,731 B2Shanghai Ruking Intelligent Control Technologies Co.,Ltd
- Method of and apparatus for controlling single-phase induction motor, and electric chain block23 Sep 2025US 12,424,958 B2Kito Corporation
- Methods and systems for TRIAC set point based control of power delivery19 Aug 2025US 12,396,070 B2SharkNinja Operating LLC
- Improved Reverse Magnetic Asynchronous Induction Motor Systems and Methods27 Aug 2026US 2026/0254332 A1Adventech, LLC
- Controller and drive circuit for electric motors7 May 2026US 2026/0128700 A1
- Controller and drive circuit for electric motors7 May 2026US 2026/0128702 A1
- System and method for advanced electronic starting switch assembly for split-phase induction motors for domestic dryers12 Mar 2026US 2026/0074631 A1Shenzhen Renaissance Technology Co., Ltd
- Compressor with variable performance single phase induction motor25 Sep 2025US 2025/0300577 A1Copeland Scroll Compressors LP
Most cited
By later US patents
- Method and apparatus for quiet variable motor speed control1,483US 7,330,004 B2Lutron Electronics Co., Inc. · 2008
- Electric motor and motor control173US 8,575,873 B2Nidec Motor Corporation · 2013
- Electric motor and motor control166US 9,893,660 B2Nidec Motor Corporation · 2018
- Microprocessor based motor control system with phase difference detection112US 5,808,441 ATecumseh Products Company · 1998
- Method for setting parameters of electronically-commutated motor for use as permanent-split capacitor motor83US 9,270,221 B2Zhongshan Broad-Ocean Motor Co., Ltd. · 2016