H02P 3/18
For stopping or slowing an ac motor
Official title: for stopping or slowing an AC motor
H02P3/18 (For stopping or slowing an ac motor) appears on 1,032 US grants and 1,112 published applications in this corpus.
Search patents in H02P- Granted patents
- 1,032
- Published applications
- 1,112
- Assignees
- 529
- Inventors
- 2,422
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 7 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 6 | 0 |
| 1984 | 10 | 0 |
| 1985 | 9 | 0 |
| 1986 | 1 | 0 |
| 1987 | 6 | 0 |
| 1988 | 6 | 0 |
| 1989 | 5 | 0 |
| 1990 | 7 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 7 | 0 |
| 1994 | 7 | 0 |
| 1995 | 8 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 7 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 1 |
| 2002 | 3 | 4 |
| 2003 | 6 | 10 |
| 2004 | 4 | 12 |
| 2005 | 8 | 14 |
| 2006 | 9 | 10 |
| 2007 | 15 | 25 |
| 2008 | 16 | 14 |
| 2009 | 11 | 33 |
| 2010 | 10 | 32 |
| 2011 | 26 | 21 |
| 2012 | 29 | 32 |
| 2013 | 28 | 53 |
| 2014 | 40 | 49 |
| 2015 | 47 | 48 |
| 2016 | 34 | 56 |
| 2017 | 57 | 55 |
| 2018 | 48 | 70 |
| 2019 | 63 | 74 |
| 2020 | 64 | 87 |
| 2021 | 70 | 69 |
| 2022 | 63 | 70 |
| 2023 | 61 | 87 |
| 2024 | 64 | 85 |
| 2025 | 74 | 59 |
| 2026 | 44 | 42 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
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- Combined induction-type electrical machine and braking arrangement with stator current control3 Sep 2026US 2026/0257563 A1Volvo Truck Corporation
- Methods for configuring a motor drive and apparatuses for implementing the same27 Aug 2026US 2026/0254379 A1Schneider Toshiba Inverter Europe SAS
- Dynamic brake device20 Aug 2026US 2026/0246399 A1Fanuc Corporation
- Elevator system having enhanced elevator car deceleration13 Aug 2026US 2026/0233971 A1Otis Elevator Company
- Electric actuator, power unit, and electric mobility apparatus equipped with power unit13 Aug 2026US 2026/0238077 A1Kokusai Keisokuki Kabushiki Kaisha
Most cited
By later US patents
- Dynamic brake blending for an inverter propulsion system76US 4,093,900 AGeneral Electric Company · 1978
- Method and system for starting a sensorless motor62US 7,652,441 B2International Rectifier Corporation · 2010
- Electric motor control apparatus and method60US 5,187,419 AAllen-Bradley Company, Inc. · 1993
- Electric motor brake59US 4,857,818 A1989
- Dynamic braking in controlled current motor drive systems55US 4,039,914 AGeneral Electric Company · 1977