H02P 25/20
For pole-changing
Official title: for pole-changing
H02P25/20 (For pole-changing) appears on 82 US grants and 63 published applications in this corpus.
Search patents in H02P- Granted patents
- 82
- Published applications
- 63
- Assignees
- 50
- Inventors
- 155
- Latest grant
- 6 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 7 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 3 |
| 2005 | 2 | 0 |
| 2006 | 1 | 3 |
| 2007 | 2 | 2 |
| 2008 | 0 | 2 |
| 2009 | 3 | 1 |
| 2010 | 2 | 4 |
| 2011 | 1 | 3 |
| 2012 | 7 | 3 |
| 2013 | 1 | 0 |
| 2014 | 1 | 1 |
| 2015 | 1 | 0 |
| 2016 | 1 | 4 |
| 2017 | 3 | 2 |
| 2018 | 0 | 4 |
| 2019 | 6 | 7 |
| 2020 | 4 | 9 |
| 2021 | 7 | 3 |
| 2022 | 4 | 1 |
| 2023 | 1 | 2 |
| 2024 | 4 | 5 |
| 2025 | 3 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pump actuating device, and associated pumping system, aircraft and fuel supply method6 Jan 2026US 12,519,410 B2Safran Aircraft Engines
- Variable pole system for electric motors25 Nov 2025US 12,483,174 B1Quantum Aerospace Technology L.L.C.
- Method for adjusting an operational performance of an electric machine, data processing device, computer program, computer-readable storage medium, and electric drive system5 Aug 2025US 12,381,503 B2Volvo Car Corporation
- Variable pole system for electric motors28 Jan 2025US 12,212,261 B1Quantum Aerospace Technology L.L.C.
- Dynamically configurable hardware system for motor system and method for operating same27 Aug 2024US 12,074,546 B2Tau Motors, Inc.
- Modular variable pole electric motor system20 Aug 2026US 2026/0246322 A1GM Global Technology Operations LLC
- Variable pole system for electric motors27 Nov 2025US 2025/0364935 A1Quantum Aerospace Technology L.L.C.
- Electronic pole-changing for induction motors6 Feb 2025US 2025/0047226 A1The Board of Trustees of the University of Illinois
- Dynamically configurable hardware system for motor system and method for operating same5 Dec 2024US 2024/0405709 A1Tau Motors, Inc.
- Pump actuating device, and associated pumping system, aircraft and fuel supply method28 Nov 2024US 2024/0396484 A1Safran Aircraft Engines
Most cited
By later US patents
- Self adapting motor controller63US 6,169,383 ASiemens Energy & Automation, Inc. · 2001
- Pole change induction motor and control apparatus and method for the same44US 6,008,616 AMeidensha Corporation · 1999
- Continuous pole amplitude modulated electric machines28US 4,477,760 AWestinghouse Electric Corp. · 1984
- Methods and apparatus for controlling electromagnetic flux in dynamoelectric machines28US 6,388,356 B1General Electric Company · 2002
- Multiple speed induction motor23US 4,467,257 AA. O. Smith Corporation · 1984