H02P 1/54
For starting two or more dynamo-electric motors
Official title: for starting two or more dynamo-electric motors
H02P1/54 (For starting two or more dynamo-electric motors) appears on 83 US grants and 74 published applications in this corpus.
Search patents in H02P- Granted patents
- 83
- Published applications
- 74
- Assignees
- 76
- Inventors
- 163
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 1 |
| 2003 | 2 | 3 |
| 2004 | 2 | 2 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 2 |
| 2008 | 1 | 1 |
| 2009 | 2 | 2 |
| 2010 | 1 | 5 |
| 2011 | 3 | 4 |
| 2012 | 4 | 2 |
| 2013 | 2 | 4 |
| 2014 | 4 | 1 |
| 2015 | 4 | 1 |
| 2016 | 0 | 7 |
| 2017 | 3 | 6 |
| 2018 | 4 | 3 |
| 2019 | 8 | 3 |
| 2020 | 3 | 5 |
| 2021 | 4 | 5 |
| 2022 | 3 | 1 |
| 2023 | 1 | 3 |
| 2024 | 4 | 5 |
| 2025 | 4 | 4 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Startup fault checking of paralleled devices7 Jul 2026US 12,673,583 B2Caterpillar Inc.
- Motor control method, laser radar, and mobile device30 Sep 2025US 12,429,563 B2Sz Dji Technology Co., Ltd.
- Hybrid propulsion systems with power sharing12 Aug 2025US 12,384,556 B2ROLLS-ROYCE plc
- Electrically driven distributed propulsion system11 Mar 2025US 12,249,831 B2General Electric Company
- Systems and methods for providing power to an electric motor from an inverter14 Jan 2025US 12,194,858 B2Toyota Jidosha Kabushiki Kaisha
- Soft start control method for multiple motors, and inverter using same30 Jul 2026US 2026/0221906 A1Ls Electric Co., Ltd.
- A system and a method of controlling two or more electrical fans14 May 2026US 2026/0133611 A1Zerro Power Systems Pte Ltd
- Startup fault checking of paralleled devices27 Nov 2025US 2025/0360837 A1Caterpillar Inc.
- Hybrid propulsion systems with power sharing6 Nov 2025US 2025/0340304 A1ROLLS-ROYCE plc
- Electrically driven distributed propulsion system19 Jun 2025US 2025/0202230 A1General Electric Company
Most cited
By later US patents
- Shunt regulation apparatus, systems, and methods88US 7,525,264 B2Halliburton Energy Services.Inc. · 2009
- Motor drive circuit49US 6,094,019 AKabushiki Kaisha Tokai Rika Denki Seisakusho · 2000
- Hybrid outdoor power equipment33US 8,076,873 B1MTD Products Inc · 2011
- Circuit for controlling multiple rated motors22US 4,434,394 AWestinghouse Electric Corp. · 1984
- Permanent magnet motor control system20US 4,288,726 AGeneral Motors Corporation · 1981