High-voltage and high-frequency insulation transformer
US-2017365400-A1 · Dec 21, 2017 · US
Encapsulating or impregnating (encapsulating coil and core H01F27/022)
Encapsulating or impregnating (encapsulating coil and core H01F27/022) · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01F27/327 |
| Official title | {Encapsulating or impregnating (encapsulating coil and core H01F27/022)} |
| Display label | Encapsulating or impregnating (encapsulating coil and core H01F27/022) |
| Total patents | 650 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 24 |
| 2017 | 31 |
| 2018 | 49 |
| 2019 | 78 |
| 2020 | 84 |
| 2021 | 97 |
| 2022 | 67 |
| 2023 | 77 |
| 2024 | 68 |
| 2025 | 46 |
| 2026 | 12 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Enhanced track resistant dome structure for dry-type cast coil transformer
US-9847167-B2 · Dec 19, 2017 · US
Stacked Coil for Wireless Charging Structure on InFO Package
US-2017345548-A1 · Nov 30, 2017 · US
Coil component
US-2017345558-A1 · Nov 30, 2017 · US
Transformer and power supply device including the same
US-9824810-B2 · Nov 21, 2017 · US
Embedded coil assembly and method of making
US-9824811-B2 · Nov 21, 2017 · US
Coil, rotating electrical machine, and method of manufacturing coil
US-9824806-B2 · Nov 21, 2017 · US
Inductive Component
US-2017309393-A1 · Oct 26, 2017 · US
Embedded coil assembly and method of making
US-2017294263-A1 · Oct 12, 2017 · US
Dry-type transformer
US-9761366-B2 · Sep 12, 2017 · US
Power inductor and manufacturing method thereof
US-9741490-B2 · Aug 22, 2017 · US
Coil component, method of manufacturing the same, and electronic device
US-9728316-B2 · Aug 8, 2017 · US
Output-noise reduction device
US-2017194090-A1 · Jul 6, 2017 · US
Molded stationary induction apparatus and method for manufacturing molded stationary induction apparatus
US-2017186530-A1 · Jun 29, 2017 · US
Surface mounted inductor and method for manufacturing the same
US-2017178793-A1 · Jun 22, 2017 · US
Wire wound-type inductor
US-2017169927-A1 · Jun 15, 2017 · US
Outdoor dry-type transformer
US-9640314-B2 · May 2, 2017 · US
Chip electronic component and manufacturing method thereof
US-2017047160-A1 · Feb 16, 2017 · US
Coil component and manufacturing method thereof
US-2017011844-A1 · Jan 12, 2017 · US
Method for manufacturing wound coil
US-2016358710-A1 · Dec 8, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01F27/327?
- CPC H01F27/327 is the Cooperative Patent Classification code for “Encapsulating or impregnating (encapsulating coil and core H01F27/022).”
- How many patents are filed under CPC H01F27/327 (Encapsulating or impregnating (encapsulating coil and core H01F27/022))?
- Our database includes 650 publications tagged with this CPC code.
- Is patent activity under CPC H01F27/327 growing?
- Publication counts under this code: 68 in 2024 vs 46 in 2025 (latest complete years).