H02P 5/74
Controlling two or more ac dynamo-electric motors
Official title: controlling two or more AC dynamo-electric motors (H02P5/46, H02P5/60 take precedence)
H02P5/74 (Controlling two or more ac dynamo-electric motors) appears on 800 US grants and 843 published applications in this corpus.
Search patents in H02P- Granted patents
- 800
- Published applications
- 843
- Assignees
- 387
- Inventors
- 1,797
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 7 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 2 |
| 2002 | 7 | 2 |
| 2003 | 4 | 9 |
| 2004 | 5 | 10 |
| 2005 | 9 | 12 |
| 2006 | 13 | 13 |
| 2007 | 10 | 10 |
| 2008 | 10 | 11 |
| 2009 | 14 | 18 |
| 2010 | 9 | 25 |
| 2011 | 9 | 18 |
| 2012 | 25 | 17 |
| 2013 | 18 | 29 |
| 2014 | 27 | 39 |
| 2015 | 26 | 37 |
| 2016 | 28 | 32 |
| 2017 | 37 | 51 |
| 2018 | 43 | 55 |
| 2019 | 55 | 79 |
| 2020 | 71 | 63 |
| 2021 | 60 | 69 |
| 2022 | 63 | 62 |
| 2023 | 62 | 70 |
| 2024 | 47 | 53 |
| 2025 | 57 | 39 |
| 2026 | 21 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Converter apparatus for converting an operating current for an electric vehicle, drive apparatus, and method for converting an operating current15 Sep 2026US 12,734,915 B2ZF Friedrichshafen AG
- Hydraulic fracturing equipment with non-hydraulic power15 Sep 2026US 12,735,968 B2U.S. Well Services, LLC
- Four-wheel drive electrified vehicle with charging system utilizing motor and multiple inverters25 Aug 2026US 12,715,325 B2Hyundai Motor Company
- Conveyor system, motor-roller controller and method for operating a conveyor system25 Aug 2026US 12,715,697 B2Industrial Software
- Position control of mechanically paralleled electrical drives without intercommunication buses7 Jul 2026US 12,676,565 B2Hamilton Sundstrand Corporation
- Semiconductor device8 Oct 2026US 2026/0312523 A1Renesas Electronics Corporation
- Driving method in case of motor failure13 Aug 2026US 2026/0233727 A1Hyundai Motor Company
- Method for monitoring and protecting an electrical hybridisation system against the risk of fire13 Aug 2026US 2026/0233851 A1Safran Electrical & Power
- Electric actuator, power unit, and electric mobility apparatus equipped with power unit13 Aug 2026US 2026/0238077 A1Kokusai Keisokuki Kabushiki Kaisha
- Motor driving device, motor driving method, and refrigeration cycle apparatus13 Aug 2026US 2026/0238144 A1Mitsubishi Electric Corporation
Most cited
By later US patents
- Handheld electromechanical surgical instruments with improved motor control arrangements for positioning components of an adapter coupled thereto527US 10,828,033 B2Ethicon, Inc. · 2020
- Hydraulic fracturing equipment with non-hydraulic power249US 10,280,724 B2U.S. Well Services, LLC · 2019
- Parameter monitoring and control for an electric driven hydraulic fracking system192US 10,753,165 B1National Service Alliance—Houston LLC · 2020
- Electric drive fracturing power supply semi-trailer183US 10,801,311 B1Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. · 2020
- Variable speed distributed drive train wind turbine system147US 7,042,110 B2Clipper Windpower Technology, Inc. · 2006