H02P 1/42
For starting an individual single-phase induction motor
Official title: for starting an individual single-phase induction motor {(H02P27/04 takes precedence)}
H02P1/42 (For starting an individual single-phase induction motor) appears on 397 US grants and 218 published applications in this corpus.
Search patents in H02P- Granted patents
- 397
- Published applications
- 218
- Assignees
- 181
- Inventors
- 599
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 8 | 0 |
| 1978 | 8 | 0 |
| 1979 | 6 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 11 | 0 |
| 1983 | 12 | 0 |
| 1984 | 13 | 0 |
| 1985 | 3 | 0 |
| 1986 | 7 | 0 |
| 1987 | 9 | 0 |
| 1988 | 10 | 0 |
| 1989 | 7 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 7 | 0 |
| 1993 | 7 | 0 |
| 1994 | 8 | 0 |
| 1995 | 6 | 0 |
| 1996 | 9 | 0 |
| 1997 | 4 | 0 |
| 1998 | 7 | 0 |
| 1999 | 10 | 0 |
| 2000 | 7 | 0 |
| 2001 | 8 | 0 |
| 2002 | 5 | 5 |
| 2003 | 3 | 7 |
| 2004 | 7 | 6 |
| 2005 | 4 | 13 |
| 2006 | 13 | 12 |
| 2007 | 8 | 8 |
| 2008 | 4 | 9 |
| 2009 | 8 | 12 |
| 2010 | 13 | 9 |
| 2011 | 7 | 16 |
| 2012 | 13 | 6 |
| 2013 | 12 | 9 |
| 2014 | 9 | 11 |
| 2015 | 7 | 11 |
| 2016 | 9 | 9 |
| 2017 | 8 | 9 |
| 2018 | 11 | 7 |
| 2019 | 7 | 9 |
| 2020 | 10 | 8 |
| 2021 | 9 | 8 |
| 2022 | 6 | 13 |
| 2023 | 12 | 10 |
| 2024 | 6 | 3 |
| 2025 | 14 | 5 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Adaptive capacitor section for fan speed control2 Jun 2026US 12,644,463 B2Hubbell Incorporated
- Single-phase AC motor with a relay function10 Feb 2026US 12,549,076 B2Motor Competence Center Holding Flensburg GmbH
- Hard start kit for multiple replacement applications21 Oct 2025US 12,451,295 B2AmRad Manufacturing, LLC
- Induction machine19 Aug 2025US 12,395,027 B2Epinovatech AB
- Controller and drive circuit for electric motors5 Aug 2025US 12,378,969 B2Regal Beloit America, Inc.
- Improved Reverse Magnetic Asynchronous Induction Motor Systems and Methods27 Aug 2026US 2026/0254332 A1Adventech, LLC
- Single-phase induction motor drive system and motor drive method11 Jun 2026US 2026/0163510 A1Delta Electronics, Inc.
- 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
- Induction machine20 Nov 2025US 2025/0357812 A1Epinovatech AB
- Compressor with variable performance single phase induction motor25 Sep 2025US 2025/0300577 A1Copeland Scroll Compressors LP
Most cited
By later US patents
- Electric motor and motor control173US 8,575,873 B2Nidec Motor Corporation · 2013
- Electric motor and motor control166US 9,893,660 B2Nidec Motor Corporation · 2018
- Adjustable electronic potential relay115US 5,528,120 ASealed Unit Parts Co., Inc. · 1996
- Starting device and circuit for starting single phase motors104US 5,561,357 A1996
- Starting device and circuit for starting single phase motors97US 5,247,236 A1993