H02P 3/20
By reversal of phase sequence of connections to the motor
Official title: by reversal of phase sequence of connections to the motor
H02P3/20 (By reversal of phase sequence of connections to the motor) appears on 41 US grants and 32 published applications in this corpus.
Search patents in H02P- Granted patents
- 41
- Published applications
- 32
- Assignees
- 38
- Inventors
- 94
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 2 | 2 |
| 2014 | 2 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 2 | 4 |
| 2019 | 4 | 2 |
| 2020 | 4 | 2 |
| 2021 | 0 | 1 |
| 2022 | 2 | 3 |
| 2023 | 3 | 5 |
| 2024 | 3 | 3 |
| 2025 | 2 | 0 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Motor braking system using multi-phase reversal mechanism19 Feb 2026US 2026/0051830 A1Anpec Electronics Corporation
- Device for supplying a power tool with electrical energy, as well as the use of a load resistor for absorbing and/or converting electrical energy, system and operating method18 Apr 2024US 2024/0123591 A1Hilti Aktiengesellschaft
- Motor control device, motor drive control device, motor device, and motor control program25 Jan 2024US 2024/0030840 A1MINEBEA MITSUMI Inc.
- Brushless dc motor braking system and method25 Jan 2024US 2024/0030841 A1Jiangsu Dongcheng Tools Technology Co., Ltd.
Most cited
By later US patents
- Controller for a door operator50US 6,184,641 B2The Chamberlain Group, Inc. · 2001
- Automatic reversing system for shredder49US 4,495,456 AGeneral Binding Corporation · 1985
- Deceleration apparatus for motor and drive circuit for use in motor deceleration apparatus or control apparatus for use in sewing machine43US 5,151,637 AHitachi, Ltd. · 1992
- Controller with two modes of braking induction motors28US 4,712,054 AEast Moline Metal Products Company · 1987
- Series-wound motor with a braking element13US 5,708,333 ARobert Bosch GmbH · 1998