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Drying webs by contact with heated surfaces or materials

Drying webs by contact with heated surfaces or materials · Cooperative Patent Classification (CPC)

Textile and paper production, treatment, and products.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeD21F5/004
Official title{Drying webs by contact with heated surfaces or materials}
Display labelDrying webs by contact with heated surfaces or materials
Total patents15

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
20193
20202
20216
20221
20232
20251

Representative patents

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