Electric machine with stator tooth tip profile for reducing winding-based power losses
US-2020381972-A1 · Dec 3, 2020 · US
Means for preventing or reducing eddy-current losses in the winding heads, e.g. by shielding
Means for preventing or reducing eddy-current losses in the winding heads, e.g. by shielding · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02K3/42 |
| Official title | Means for preventing or reducing eddy-current losses in the winding heads, e.g. by shielding |
| Display label | Means for preventing or reducing eddy-current losses in the winding heads, e.g. by shielding |
| Total patents | 126 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 4 |
| 2017 | 3 |
| 2018 | 8 |
| 2019 | 27 |
| 2020 | 16 |
| 2021 | 16 |
| 2022 | 19 |
| 2023 | 12 |
| 2024 | 13 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Generator field amortisseur & spring axial locking mechanism
US-2020350795-A1 · Nov 5, 2020 · US
Electric machine
US-10804762-B2 · Oct 13, 2020 · US
Rotating electrical machine coil
US-10770945-B2 · Sep 8, 2020 · US
Stator core, stator, electric motor, drive device, compressor, air conditioner, and a method of manufacturing a stator core
US-10763717-B2 · Sep 1, 2020 · US
Motor stator
US-2020212750-A1 · Jul 2, 2020 · US
Rotary electric machine
US-2020161921-A1 · May 21, 2020 · US
Motor core
US-2020153321-A1 · May 14, 2020 · US
Stator core and motor
US-2020127522-A1 · Apr 23, 2020 · US
Thrust load support for downhole-type system
US-10630139-B2 · Apr 21, 2020 · US
Electrical Machine Winding Inductance Enhancement
US-2020119598-A1 · Apr 16, 2020 · US
Electric machine, tuned winding geometry and technology and related methods
US-2020119610-A1 · Apr 16, 2020 · US
Sealless downhole system with magnetically supported rotor
US-10581297-B2 · Mar 3, 2020 · US
Electric machine and motor vehicle
US-10547226-B2 · Jan 28, 2020 · US
High speed motor drive
US-10536053-B2 · Jan 14, 2020 · US
Stator core, stator, electric motor, drive device, compressor, air conditioner, and a method of manufacturing a stator core
US-2019386534-A1 · Dec 19, 2019 · US
Rotary electric machine
US-2019379252-A1 · Dec 12, 2019 · US
Axial gap generator measurement tool
US-2019368325-A1 · Dec 5, 2019 · US
Motor driving device and motor driving method
US-2019363600-A1 · Nov 28, 2019 · US
Electrical isolation mounting of electrical machine stator
US-2019356191-A1 · Nov 21, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02K3/42?
- CPC H02K3/42 is the Cooperative Patent Classification code for “Means for preventing or reducing eddy-current losses in the winding heads, e.g. by shielding.”
- How many patents are filed under CPC H02K3/42 (Means for preventing or reducing eddy-current losses in the winding heads, e.g. by shielding)?
- Our database includes 126 publications tagged with this CPC code.
- Is patent activity under CPC H02K3/42 growing?
- Publication counts under this code: 13 in 2024 vs 4 in 2025 (latest complete years).