Wirelessly transferring power within an electric machine with actively rectified rotor windings
US-2024195269-A1 · Jun 13, 2024 · US
characterised by the arrangement of exciting windings, e.g. for self-excitation, compounding or pole-changing
characterised by the arrangement of exciting windings, e.g. for self-excitation, compounding or pole-changing · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02K19/12 |
| Official title | characterised by the arrangement of exciting windings, e.g. for self-excitation, compounding or pole-changing |
| Display label | characterised by the arrangement of exciting windings, e.g. for self-excitation, compounding or pole-changing |
| Total patents | 188 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 14 |
| 2017 | 14 |
| 2018 | 20 |
| 2019 | 26 |
| 2020 | 20 |
| 2021 | 17 |
| 2022 | 14 |
| 2023 | 11 |
| 2024 | 20 |
| 2025 | 22 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for increasing the efficiency of an energy transfer device, energy transfer device, and use of an electrically conductive material
US-11870307-B2 · Jan 9, 2024 · US
Variable torque electric motor assembly
US-2019131900-A1 · May 2, 2019 · US
Separately excited electric machine with at least one primary magnetic circuit and at least two secondary magnetic circuits
US-10164509-B2 · Dec 25, 2018 · US
Systems and methods concerning exciterless synchronous machines
US-10097123-B2 · Oct 9, 2018 · US
Rotating electric machine
US-10090742-B2 · Oct 2, 2018 · US
Field winding type synchronous machine
US-10075112-B2 · Sep 11, 2018 · US
Drive system with electromagnetic energy transfer
US-2018248460-A1 · Aug 30, 2018 · US
Magnetless rotating electric machine
US-10050503-B2 · Aug 14, 2018 · US
Method for manufacturing a stator assembly of an electrical machine
US-2018205299-A1 · Jul 19, 2018 · US
Motor
US-10003225-B2 · Jun 19, 2018 · US
Synchronous machine with rechargeable power storage devices
US-9998047-B2 · Jun 12, 2018 · US
Charging system using wound rotor synchronous motor
US-2018115181-A1 · Apr 26, 2018 · US
Charging system using wound rotor synchronous motor
US-2018115180-A1 · Apr 26, 2018 · US
Controller for permanent magnet synchronous motor, image forming apparatus, and control method
US-9929686-B2 · Mar 27, 2018 · US
Switched reluctance machine with toroidal winding
US-2018083519-A1 · Mar 22, 2018 · US
Reluctance motor having inductor pole coils located between adjacent ones of the salient poles of a rotor
US-9917484-B2 · Mar 13, 2018 · US
Magnet-free rotating electric machine
US-9906107-B2 · Feb 27, 2018 · US
Systems and methods concerning exciterless synchronous machines
US-2018034396-A1 · Feb 1, 2018 · US
Field winding type synchronous machine
US-9876455-B2 · Jan 23, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02K19/12?
- CPC H02K19/12 is the Cooperative Patent Classification code for “characterised by the arrangement of exciting windings, e.g. for self-excitation, compounding or pole-changing.”
- How many patents are filed under CPC H02K19/12 (characterised by the arrangement of exciting windings, e.g. for self-excitation, compounding or pole-changing)?
- Our database includes 188 publications tagged with this CPC code.
- Is patent activity under CPC H02K19/12 growing?
- Publication counts under this code: 20 in 2024 vs 22 in 2025 (latest complete years).