Wirelessly transferring power within an electric machine with actively rectified rotor windings
US-2024195269-A1 · Jun 13, 2024 · US
Rotor cores with windings and permanent magnets (for additional excitation in synchronous motors or generators H02K21/042; in synchronous motors having additional short-circuited winding for starting as an asynchronous motor H02K21/46)
Rotor cores with windings and permanent magnets (for additional excitation in synchronous motors or generators H02K21/042; in synchronous motors having additional short-circuited winding for starting as an asynchronous motor H02K21/46) · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02K1/223 |
| Official title | {Rotor cores with windings and permanent magnets (for additional excitation in synchronous motors or generators H02K21/042; in synchronous motors having additional short-circuited winding for starting as an asynchronous motor H02K21/46)} |
| Display label | Rotor cores with windings and permanent magnets (for additional excitation in synchronous motors or generators H02K21/042; in synchronous motors having additional short-circuited winding for starting as an asynchronous motor H02K21/46) |
| Total patents | 155 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 11 |
| 2017 | 6 |
| 2018 | 25 |
| 2019 | 21 |
| 2020 | 24 |
| 2021 | 10 |
| 2022 | 19 |
| 2023 | 4 |
| 2024 | 18 |
| 2025 | 10 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Stator For An Electric Motor
US-2019356181-A1 · Nov 21, 2019 · US
Rotor carrier assembly
US-10465780-B2 · Nov 5, 2019 · US
Reduction of starting current in line start permanent magnet brushless motors
US-10461594-B2 · Oct 29, 2019 · US
Rotor for rotating electric machines
US-2019319522-A1 · Oct 17, 2019 · US
Electromagnetic haptic actuator with high definition capability
US-10404149-B2 · Sep 3, 2019 · US
Rotor carrier and flange assembly
US-10352422-B2 · Jul 16, 2019 · US
Rotating electric machine
US-2019214894-A1 · Jul 11, 2019 · US
Electrical machine
US-2019157956-A1 · May 23, 2019 · US
Permanent magnet electrical machine
US-2019140495-A1 · May 9, 2019 · US
Motor drive controller and method for controlling motor
US-10218295-B2 · Feb 26, 2019 · US
Electric motor
US-2018351423-A1 · Dec 6, 2018 · US
Permanent magnet based electric machine having enhanced torque
US-2018323664-A1 · Nov 8, 2018 · US
Linear flux switching permanent magnet motor
US-2018294704-A1 · Oct 11, 2018 · US
Linear flux switching permanent magnet motor
US-2018294705-A1 · Oct 11, 2018 · US
Electrical machine
US-2018269760-A1 · Sep 20, 2018 · US
Permanent magnet starter-generator with magnetic flux regulation
US-2018262091-A1 · Sep 13, 2018 · US
Electric motor
US-10075031-B2 · Sep 11, 2018 · US
Wound-rotor synchronous machine with permanent magnets
US-2018254688-A1 · Sep 6, 2018 · US
Hybrid motor and an associated method thereof
US-2018233970-A1 · Aug 16, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02K1/223?
- CPC H02K1/223 is the Cooperative Patent Classification code for “Rotor cores with windings and permanent magnets (for additional excitation in synchronous motors or generators H02K21/042; in synchronous motors having additional short-circuited winding for starting as an asynchronous motor H02K21/46).”
- How many patents are filed under CPC H02K1/223 (Rotor cores with windings and permanent magnets (for additional excitation in synchronous motors or generators H02K21/042; in synchronous motors having additional short-circuited winding for starting as an asynchronous motor H02K21/46))?
- Our database includes 155 publications tagged with this CPC code.
- Is patent activity under CPC H02K1/223 growing?
- Publication counts under this code: 18 in 2024 vs 10 in 2025 (latest complete years).