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characterised by the composition of the impregnant

characterised by the composition of the impregnant · Cooperative Patent Classification (CPC)

Electric circuits, power, telecommunications, and semiconductors.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	H01G4/221
Official title	{characterised by the composition of the impregnant}
Display label	characterised by the composition of the impregnant
Total patents	7

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

Filing activity over the last five years is stable.

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