Radio frequency transformer winding coil structure
US-2020411224-A1 · Dec 31, 2020 · US
Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores
Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01F41/08 |
| Official title | Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores |
| Display label | Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores |
| Total patents | 116 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 5 |
| 2017 | 10 |
| 2018 | 15 |
| 2019 | 12 |
| 2020 | 13 |
| 2021 | 12 |
| 2022 | 12 |
| 2023 | 5 |
| 2024 | 17 |
| 2025 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Coil unit, drive mechanism, winding device and winding method
US-10878982-B2 · Dec 29, 2020 · US
Radio frequency transformer winding coil structure
US-10796839-B2 · Oct 6, 2020 · US
Coil component and manufacturing method therefor
US-2020312529-A1 · Oct 1, 2020 · US
Apparatus and method for magnetic field compression using a toroid coil structure
US-10726986-B2 · Jul 28, 2020 · US
Single litz wire transformers
US-10692646-B2 · Jun 23, 2020 · US
Manufacturing method of insulated wire for electromagnetic forming
US-10672540-B2 · Jun 2, 2020 · US
Transformer module and power module
US-2020143985-A1 · May 7, 2020 · US
Electromagnetic induction device configured as a multiple magnetic circuit
US-10593460-B2 · Mar 17, 2020 · US
Electromagnetic induction device configured as a multiple magnetic circuit
US-2020035397-A1 · Jan 30, 2020 · US
Electromagnetic induction device configured as a multiple magnetic circuit
US-10475566-B2 · Nov 12, 2019 · US
Manufacturing method of insulated wire for electromagnetic forming
US-2019279791-A1 · Sep 12, 2019 · US
Coil component, coil module, and method for manufacturing coil component
US-10403431-B2 · Sep 3, 2019 · US
Winding for low-voltage coils of distribution-class toroidal transformers
US-10381155-B2 · Aug 13, 2019 · US
Compound line filter
US-2019198242-A1 · Jun 27, 2019 · US
Balun and method for manufacturing same
US-2019172628-A1 · Jun 6, 2019 · US
Coil unit, drive mechanism, winding device and winding method
US-10304605-B2 · May 28, 2019 · US
Apparatus and method for magnetic field compression using a toroid coil structure
US-2019115133-A1 · Apr 18, 2019 · US
Core case unit, coil component, and method for producing coil component
US-10256034-B2 · Apr 9, 2019 · US
Geometrically configurable multi-core inductor and methods for tools having particular space constraints
US-10242790-B2 · Mar 26, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01F41/08?
- CPC H01F41/08 is the Cooperative Patent Classification code for “Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores.”
- How many patents are filed under CPC H01F41/08 (Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores)?
- Our database includes 116 publications tagged with this CPC code.
- Is patent activity under CPC H01F41/08 growing?
- Publication counts under this code: 17 in 2024 vs 7 in 2025 (latest complete years).