Felts

Felts · 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 codeD21F7/08
Official titleFelts
Display labelFelts
Total patents144

Filing trend

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

Filing activity over the last five years is rapidly declining.

Patents filed per year
YearPatents
201512
201622
201714
201818
20196
202016
202113
202218
202311
20249
20255

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 D21F7/08?
CPC D21F7/08 is the Cooperative Patent Classification code for “Felts.”
How many patents are filed under CPC D21F7/08 (Felts)?
Our database includes 144 publications tagged with this CPC code.
Is patent activity under CPC D21F7/08 growing?
Publication counts under this code: 9 in 2024 vs 5 in 2025 (latest complete years).