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characterised by the impregnation or treatment-process or apparatus

characterised by the impregnation or treatment-process or apparatus · Cooperative Patent Classification (CPC)

Textile and paper production, treatment, and products.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	D04H1/642
Official title	{characterised by the impregnation or treatment-process or apparatus}
Display label	characterised by the impregnation or treatment-process or apparatus
Total patents	4

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

Filing activity appears stable based on the most recent years.

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