Insulation between coil and core, between different winding sections, around the coil; Other insulation structures

Insulation between coil and core, between different winding sections, around the coil; Other insulation structures · Cooperative Patent Classification (CPC)

Electric circuits, power, telecommunications, and semiconductors.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeH01F27/324
Official title{Insulation between coil and core, between different winding sections, around the coil; Other insulation structures}
Display labelInsulation between coil and core, between different winding sections, around the coil; Other insulation structures
Total patents1,512

Filing trend

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is declining.

Patents filed per year
YearPatents
201532
201646
201764
201896
2019168
2020148
2021204
2022198
2023171
2024199
2025146
202640

Representative patents

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.

Frequently asked questions

Answers are generated from the same data shown on this page.

What is CPC H01F27/324?
CPC H01F27/324 is the Cooperative Patent Classification code for “Insulation between coil and core, between different winding sections, around the coil; Other insulation structures.”
How many patents are filed under CPC H01F27/324 (Insulation between coil and core, between different winding sections, around the coil; Other insulation structures)?
Our database includes 1,512 publications tagged with this CPC code.
Is patent activity under CPC H01F27/324 growing?
Publication counts under this code: 199 in 2024 vs 146 in 2025 (latest complete years).